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            Rapid synthesis of glycosylated insulins by flow-based peptide synthesis
            
            
            
            
           
            Yuta Maki, Surin K. Mong, Chaitra Chandrashekar, Briony E. Forbes, Mohammed Akhter Hossain, Shintaro Yamaguchi, Colin M. Fadzen, Yasuhiro Kajihara, Bradley L. Pentelute
           
            Chemical Science 2025 Research paper (scientific journal)
           Publisher: Royal Society of Chemistry (RSC)
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            Harnessing Free Sulfate Groups in Glycosylation Reactions.
            
            
            
            
            
            
           
            Yuta Maki, Akihiro Manbo, Abe Junpei, Hiroki Nobutou, Kohtaro Hirao, Ryo Okamoto, Masayuki Izumi, Shusuke Yamanaka, Mitsutaka Okumura, Yasuhiro Kajihara
           
            Angewandte Chemie (International ed. in English) 2024/11/14 Research paper (scientific journal)
           
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            Uncovering a Latent Bioactive Interleukin‐6 Glycoform
            
            
            
            
           
            Yasuhiro Kajihara, Yanbo Liu, Yuta Maki, Ryo Okamoto, Ayano Satoh, Yasuto Todokoro, Yurie Kanemitsu, Keito Otani
           
            Angewandte Chemie International Edition 2024/08/05 Research paper (scientific journal)
           Publisher: Wiley
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            Isopeptide bond formation mediated by δ-selenolysine for chemical ubiquitination
            
            
            
            
           
            Tatsunari Akiyama, Yusuke Tanaka, Ryo Okamoto, Yasuhiro Kajihara, Masayuki Izumi
           
            Frontiers in Chemistry Vol. 11 2023/11/21 Research paper (scientific journal)
           Publisher: Frontiers Media SA
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            Semisynthesis of homogeneous misfolded glycoprotein interleukin-8.
            
            
            
            
            
            
            
            
           
            Yugoviandi P Mamahit, Yuta Maki, Ryo Okamoto, Yasuhiro Kajihara
           
            Carbohydrate research Vol. 531 p. 108847-108847 2023/09 Research paper (scientific journal)
           
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            Rapid Chemical Synthesis of Serine Protease Inhibitor Kazal-type 13 (SPINK13) Glycoform by a Combined Method with Glycan Insertion Strategy and Fast-Flow Fmoc SPPS.
            
            
            
            
            
            
            
            
           
            Kota Nomura, Ryo Okamoto, Yuta Maki, Ayumu Hayashibara, Toshifumi Takao, Tomoya Fukuoka, Eiji Miyoshi, Bradley L Pentelute, Yasuhiro Kajihara
           
            Chemistry (Weinheim an der Bergstrasse, Germany) Vol. 29 No. 42 2023/07/26 Research paper (scientific journal)
           
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            Recent advances on the synthesis of N-linked glycoprotein for the elucidation of glycan functions
            
            
            
            
            
            
           
            Yanbo Liu, Kota Nomura, Junpei Abe, Yasuhiro Kajihara
           
            Current Opinion in Chemical Biology Vol. 73 p. 102263-102263 2023/04 Research paper (scientific journal)
           Publisher: Elsevier BV
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            Regulating Antifreeze Activity through Water: Latent Functions of the Sugars of Antifreeze Glycoprotein Revealed by Total Chemical Synthesis.
            
            
            
            
            
            
            
            
           
            Ryo Okamoto, Ryo Orii, Hiroyuki Shibata, Yuta Maki, Sakae Tsuda, Yasuhiro Kajihara
           
            Chemistry (Weinheim an der Bergstrasse, Germany) Vol. 29 No. 21 2023/01/31 Research paper (scientific journal)
           
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            Convergent synthesis of proteins using peptide-aminothiazoline
            
            
            
            
           
            Ryo Okamoto, Hiroyuki Shibata, Takahiro Yatsuzuka, Takuya Hanao, Yuta Maki, Kazuya Kabayama, Ayane Miura, Koichi Fukase, Yasuhiro Kajihara
           
            Chemical Communications 2023 Research paper (scientific journal)
           Publisher: Royal Society of Chemistry (RSC)
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            Squaryl group-modified UDP analogs as inhibitors of the endoplasmic reticulum-resident folding sensor enzyme UGGT
            
            
            
            
            
            
           
            Junpei Abe, Yoichi Takeda, Takashi Kikuma, Yasuhiko Kizuka, Hiroyuki Kajiura, Yasuhiro Kajihara, Yukishige Ito
           
            Chemical Communications 2023 Research paper (scientific journal)
           Publisher: Royal Society of Chemistry (RSC)
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            Isolation and characterization of high-mannose type glycans containing five or six mannose residues from hen egg yolk
            
            
            
            
            
            
           
            Yuta Maki, Yuiko Otani, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            Carbohydrate Research Vol. 521 p. 108680-108680 2022/11 Research paper (scientific journal)
           Publisher: Elsevier BV
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            Design and Synthesis of Glycosylated Cholera Toxin B Subunit as a Tracer of Glycoprotein Trafficking in Organelles of Living Cells
            
            
            
            
            
            
           
            Yuta Maki, Kazuki Kawata, Yanbo Liu, Kang‐Ying Goo, Ryo Okamoto, Yasuhiro Kajihara, Ayano Satoh
           
            Chemistry – A European Journal 2022/05/23 Research paper (scientific journal)
           Publisher: Wiley
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            Semisynthesis of a Homogeneous Glycoprotein Using Chemical Transformation of Peptides to Thioester Surrogates
            
            
            
            
            
            
           
            Ryo Okamoto, Kento Iritani, Yoko Amazaki, Donglin Zhao, Chaitra Chandrashekar, Yuta Maki, Yurie Kanemitsu, Tomoka Kaino, Yasuhiro Kajihara
           
            The Journal of Organic Chemistry Vol. 87 No. 1 p. 114-124 2022/01/07 Research paper (scientific journal)
           Publisher: American Chemical Society (ACS)
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            Synthesis of homogeneous glycoproteins with diverse N-glycans
            
            
            
            
            
            
           
            Kota Nomura, Yanbo Liu, Yasuhiro Kajihara
           
            Advances in Carbohydrate Chemistry and Biochemistry 2022 Part of collection (book)
           Publisher: Elsevier
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            Optimizing the Semisynthesis towards glycosylated interferon-β-polypeptide by utilizing bacterial protein expression and chemical modification
            
            
            
            
            
            
           
            Yie Kie Chong, Chaitra Chandrashekar, Donglin Zhao, Yuta Maki, Ryo Okamoto, Yasuhiro Kajihara
           
            Organic & Biomolecular Chemistry Vol. 20 No. 9 p. 1907-1915 2022 Research paper (scientific journal)
           Publisher: Royal Society of Chemistry (RSC)
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            Purified EDEM3 or EDEM1 alone produces determinant oligosaccharide structures from M8B in mammalian glycoprotein ERAD.
            
            
            
            
            
            
            
            
           
            Ginto George, Satoshi Ninagawa, Hirokazu Yagi, Jun-Ichi Furukawa, Noritaka Hashii, Akiko Ishii-Watabe, Ying Deng, Kazutoshi Matsushita, Tokiro Ishikawa, Yugoviandi P Mamahit, Yuta Maki, Yasuhiro Kajihara, Koichi Kato, Tetsuya Okada, Kazutoshi Mori
           
            eLife Vol. 10 2021/10/26 Research paper (scientific journal)
           
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            Glycoprotein Semisynthesis by Chemical Insertion of Glycosyl Asparagine Using a Bifunctional Thioacid-Mediated Strategy
            
            
            
            
            
            
           
            Kota Nomura, Yuta Maki, Ryo Okamoto, Ayano Satoh, Yasuhiro Kajihara
           
            Journal of the American Chemical Society Vol. 143 No. 27 p. 10157-10167 2021/06/30 Research paper (scientific journal)
           Publisher: American Chemical Society (ACS)
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            Synthesis of the glycoprotein having an N-linked complex type oligosaccharide
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Ryo Okamoto
           
            2021
           Publisher: Japan Consortium for Glycobiology and Glycotechnology
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            Studies in glycopeptide synthesis
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Rie Nishikawa, Yuta Maki, Ryo Okamoto
           
            Arkivoc Vol. 2021 No. 4 p. 230-240 2020/12/11 Research paper (scientific journal)
           Publisher: ARKAT USA, Inc.
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            Chemical Synthesis of an Erythropoietin Glycoform Having a Triantennary N-Glycan: Significant Change of Biological Activity of Glycoprotein by Addition of a Small Molecular Weight Trisaccharide
            
            
            
            
            
            
           
            Yuta Maki, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            Journal of the American Chemical Society 2020/11/24 Research paper (scientific journal)
           Publisher: American Chemical Society (ACS)
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            Studies for Elucidation of Oligosaccharide Functions of Glycoproteins
            
            
            
            
            
            
           
            Yuta Maki, Ryo Okamoto, Masumi Murakami, Yasuhiro Kajihara
           
            Journal of Synthetic Organic Chemistry, Japan Vol. 78 No. 11 p. 1021-1038 2020/11/01 Research paper (scientific journal)
           Publisher: The Society of Synthetic Organic Chemistry, Japan
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            Chemical Synthesis Based Approach to Glycoprotein Functions in the Endoplasmic Reticulum.
            
            
            
            
            
            
            
            
           
            Yukishige Ito, Yasuhiro Kajihara, Yoichi Takeda
           
            Chemistry (Weinheim an der Bergstrasse, Germany) 2020/10/26 Research paper (scientific journal)
           
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            Chemical Synthesis of Ubiquitinated High-Mannose-Type N-Glycoprotein CCL1 in Different Folding States.
            
            
            
            
            
            
            
            
           
            Masayuki Izumi, Hiroyuki Araki, Mamiko Tominaga, Ryo Okamoto, Yasuhiro Kajihara
           
            The Journal of organic chemistry Vol. 85 No. 24 p. 16024-16034 2020/10/07 Research paper (scientific journal)
           
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            Acceleration and Deceleration Factors on the Hydrolysis Reaction of 4,6-O-Benzylidene Acetal Group.
            
            
            
            
            
            
            
            
           
            Yuta Maki, Kota Nomura, Ryo Okamoto, Masayuki Izumi, Yasuhisa Mizutani, Yasuhiro Kajihara
           
            The Journal of organic chemistry 2020/05/12 Research paper (scientific journal)
           
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            Identification of the epitope of 10-7G glycan antibody to recognize cancer-associated haptoglobin.
            
            
            
            
            
            
            
            
           
            Koichi Morishita, Yuta Maki, Shinji Takamatsu, Nami Ito, Sayaka Koda, Kei Motooka, Yoshihiro Kamada, Yasuhiro Kajihara, Eiji Miyoshi
           
            Analytical biochemistry Vol. 593 p. 113588-113588 2020/03/15
           
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            A Chemoselective Peptide Bond Formation by Amino Thioacid Coupling
            
            
            
            
            
            
           
            Okamoto Ryo, Nomura Kota, Maki Yuta, Kajihara Yasuhiro
           
            CHEMISTRY LETTERS Vol. 48 No. 11 p. 1391-1393 2019/11 Research paper (scientific journal)
           
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            N,N-Dimethylaminoxy Carbonyl, a Polar Protecting Group for Efficient Peptide Synthesis.
            
            
            
            
            
            
           
            Okamoto R, Ono E, Izumi M, Kajihara Y
           
            Frontiers in chemistry Vol. 7 2019/03/28
           
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            Chemical and enzymatic synthesis and production of glycans
            
            
            
            
            
            
           
            Yukishige Ito, Toshiki Nokami, Yasuhiro Kajihara, Ichiro Matsuo, Hideharu Ishida, Hiromune Ando, Koichi Fukase, Jun Ichi Tamura, Toshiyuki Inazu
           
            Glycoscience: Basic Science to Applications: Insights from the Japan Consortium for Glycobiology and Glycotechnology (JCGG) p. 65-86 2019/01/01 Part of collection (book)
           
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            Regioselective α-peptide bond formation through the oxidation of amino thioacids
            
            
            
            
            
            
           
            Ryo Okamoto, Takuya Haraguchi, Kota Nomura, Yuta Maki, Masayuki Izumi, Yasuhiro Kajihara
           
            Biochemistry Vol. 58 p. 1672-1678 2019 Research paper (scientific journal)
           
            
            
              
         
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            Chemical Modification of the N Termini of Unprotected Peptides for Semisynthesis of Modified Proteins by Utilizing a Hydrophilic Protecting Group
            
            
            
            
            
            
           
            C. Chandrashekar, R.Okamoto, M. Izumi, Y. Kajihara
           
            Chem. Eur. J Vol. 25 p. 10197-10203 2019 Research paper (scientific journal)
           
            
            
              
         
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            Total Chemical Synthesis of a Non-Fibrillating Human Glycoinsulin,Mohammed
            
            
            
            
            
            
           
            Akhter Hossain, Ryo Okamoto, John A. Karas, Praveen Praveen, Mengjie Liu, Briony E Forbes, John D. Wade, Yasuhiro Kajihara
           
            J. Am. Chem. Soc. 2019 Research paper (scientific journal)
           
            
            
              
         
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            Semisynthesis of Complex-Type Biantennary Oligosaccharides Containing Lactosamine Repeating Units from a Biantennary Oligosaccharide Isolated from a Natural Source
            
            
            
            
            
            
           
            Yuta Maki, Takanori Mima, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            Journal of Organic Chemistry Vol. 83 No. 1 p. 443-451 2018/01/05 Research paper (scientific journal)
           Publisher: American Chemical Society
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            Monitoring of glycoprotein quality control system with a series of chemically synthesized homogeneous native and misfolded glycoproteins
            
            
            
            
            
            
            
            
           
            Tatsuto Kiuchi, Masayuki Izumi, Yuki Mukogawa, Arisa Shimada, Ryo Okamoto, Akira Seko, Masafumi Sakono, Yoichi Takeda, Yukishige Ito, Yasuhiro Kajihara
           
            J. Am. Chem. Soc. Vol. 140 No. 50 p. 17499-17507 2018 Research paper (scientific journal)
           
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            Recent advances in the chemical synthesis of N-linked glycoproteins.
            
            
            
            
            
            
           
            Carlo Unverzagt, Yasuhiro Kajihara
           
            Curr. Opin. Chem. Biol Vol. 46 p. 130-137 2018 Research paper (scientific journal)
           
            
            
              
         
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            Substrate Recognition of Glycoprotein Folding Sensor UGGT Analyzed by Site-Specifically N-15-Labeled Glycopeptide and Small Glycopeptide Library Prepared by Parallel Native Chemical Ligation
            
            
            
            
            
            
           
            Masayuki Izumi, Rie Kuruma, Ryo Okamoto, Akira Seko, Yukishige Ito, Yasuhiro Kajihara
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 139 No. 33 p. 11421-11426 2017/08 Research paper (scientific journal)
           
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            Total Synthesis of O-GalNAcylated Antifreeze Glycoprotein using the Switchable Reactivity of Peptidyl-N-pivaloylguanidine
            
            
            
            
            
            
           
            Ryo Orii, Noriko Sakamoto, Daichi Fukami, Sakae Tsuda, Masayuki Izumi, Yasuhiro Kajihara, Ryo Okamoto
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 23 No. 39 p. 9253-9257 2017/07 Research paper (scientific journal)
           
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            Chemical Synthesis of Glycoproteins with the Specific Installation of Gradient-Enriched N-15-Labeled Amino Acids for Getting Insights into Glycoprotein Behavior
            
            
            
            
            
            
           
            Nguyen Minh Hien, Masayuki Izumi, Hajime Sato, Ryo Okamoto, Yasuhiro Kajihara
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 23 No. 27 p. 6579-6585 2017/05 Research paper (scientific journal)
           
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            Direct assay for endo-alpha-mannosidase substrate preference on correctly folded and misfolded model glycoproteins
            
            
            
            
            
            
           
            Simone Dedola, Masayuki Izumi, Yutaka Makimura, Akira Seko, Akiko Kanamori, Yoichi Takeda, Yukishige Ito, Yasuhiro Kajihara
           
            CARBOHYDRATE RESEARCH Vol. 434 p. 94-98 2016/11 Research paper (scientific journal)
           
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            Chemical synthesis of homogeneous antifreeze glycoprotein having uniform GalNAc modification and its antifreeze activity
            
            
            
            
            
            
           
            Ryo Okamoto, Ryo Orii, Masayuki Izumi, Daichi Fukami, Sakae Tsuda, Yasuhiro Kajihara
           
            PROTEIN SCIENCE Vol. 25 p. 65-65 2016/10
           
            
            
              
         
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            Effects of domain composition on catalytic activity of human UDP-glucose:glycoprotein glucosyltransferases
            
            
            
            
            
            
           
            Yoichi Takeda, Akira Seko, Kohki Fujikawa, Masayuki Izumi, Yasuhiro Kajihara, Yukishige Ito
           
            GLYCOBIOLOGY Vol. 26 No. 9 p. 999-1006 2016/09 Research paper (scientific journal)
           
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            D-Amino Acid Scan of Two Small Proteins
            
            
            
            
            
            
           
            Mark D. Simon, Yuta Maki, Alexander A. Vinogradov, Chi Zhang, Hongtao Yu, Yu-Shan Lin, Yasuhiro Kajihara, Bradley L. Pentelute
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 138 No. 37 p. 12099-12111 2016/09 Research paper (scientific journal)
           
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            Evaluation of the Effect of Post-Translational Modification Toward Protein Structure: Chemical Synthesis of Glycosyl Crambins Having Either a High Mannose-Type or a Complex-Type Oligosaccharide
            
            
            
            
            
            
           
            Simone Dedola, Masayuki Izumi, Yutaka Makimura, Yukishige Ito, Yasuhiro Kajihara
           
            BIOPOLYMERS Vol. 106 No. 4 p. 446-452 2016/07 Research paper (scientific journal)
           
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            An efficient solid-phase synthesis of peptidyl-N-acetylguanidines for use in native chemical ligation
            
            
            
            
            
            
           
            Ryo Okamoto, Madoka Isoe, Masayuki Izumi, Yasuhiro Kajihara
           
            JOURNAL OF PEPTIDE SCIENCE Vol. 22 No. 5 p. 343-351 2016/05 Research paper (scientific journal)
           
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            Synthesis of Glc(1)Man(9)-Glycoprotein Probes by a Misfolding/Enzymatic Glucosylation/Misfolding Sequence
            
            
            
            
            
            
           
            Masayuki Izumi, Yukiho Oka, Ryo Okamoto, Akira Seko, Yoichi Takeda, Yukishige Ito, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 55 No. 12 p. 3968-3971 2016/03 Research paper (scientific journal)
           
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            Semisynthesis of Intact Complex-Type Triantennary Oligosaccharides from a Biantennary Oligosaccharide Isolated from a Natural Source by Selective Chemical and Enzymatic Glycosylation
            
            
            
            
            
            
           
            Yuta Maki, Ryo Okamoto, Masayuki Izumi, Takefumi Murase, Yasuhiro Kajihara
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 138 No. 10 p. 3461-3468 2016/03 Research paper (scientific journal)
           
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            Synthesis of misfolded glycoprotein dimers through native chemical ligation of a dimeric peptide thioester
            
            
            
            
            
            
           
            Masayuki Izumi, Shinji Komaki, Ryo Okamoto, Akira Seko, Yoichi Takeda, Yukishige Ito, Yasuhiro Kajihara
           
            ORGANIC & BIOMOLECULAR CHEMISTRY Vol. 14 No. 25 p. 6088-6094 2016 Research paper (scientific journal)
           
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            Chemical synthesis of erythropoietin glycoforms for insights into the relationship between glycosylation pattern and bioactivity
            
            
            
            
            
            
           
            Masumi Murakami, Tatsuto Kiuchi, Mika Nishihara, Katsunari Tezuka, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            Science Advances Vol. 2 No. 1 2016/01/01 Research paper (scientific journal)
           Publisher: American Association for the Advancement of Science
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            Synthesis of Glc1Man9-glycoprotein probes by a unique misfolding/enzymatic glucosylation/intentional misfolding approach
            
            
            
            
            
            
           
            M. Izumi, Y. Oka, R. Okamoto, A. Seko, Y. Takeda, Y. Ito, Y. Kajihara
           
            Angew. Chem. Int. Ed Vol. 128 p. 4036-4039 2016 Research paper (scientific journal)
           
            
            
              
         
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            Efficient Synthesis of L-galactose from D-galactose
            
            
            
            
            
            
           
            Ryo Orii, Masayuki Izumi, Yasuhiro Kajihara, Ryo Okamoto
           
            JOURNAL OF CARBOHYDRATE CHEMISTRY Vol. 34 No. 9 p. 560-566 2015/11 Research paper (scientific journal)
           
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            Synthesis of D,L-amino acid derivatives bearing a thiol at the beta-position and their enzymatic optical resolution
            
            
            
            
            
            
           
            Yasuhito Morishita, Tomoka Kaino, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            TETRAHEDRON LETTERS Vol. 56 No. 47 p. 6565-6568 2015/11 Research paper (scientific journal)
           
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            Chemical synthesis of homogeneous glycoproteins
            
            
            
            
            
            
           
            Masayuki Izumi, Ryo Okamoto, Yasuhiro Kajihara
           
            Glycoscience: Biology and Medicine p. 313-321 2015/01/01 Part of collection (book)
           Publisher: Springer Japan
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            Efficient synthesis of polypeptide-alpha-thioester by the method combining polypeptide expression and chemical activation for the semi-synthesis of interferon-gamma having oligosaccharides
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Yurie Kanemitsu, Mika Nishihara, Ryo Okamoto, Masayuki Izumi
           
            JOURNAL OF PEPTIDE SCIENCE Vol. 20 No. 12 p. 958-963 2014/12 Research paper (scientific journal)
           
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            Chemical Synthesis of a Synthetic Analogue of the Sialic Acid-Binding Lectin Siglec-7
            
            
            
            
            
            
           
            Masayuki Izumi, Akihisa Otsuki, Mika Nishihara, Ryo Okamoto, Yasuhiro Kajihara
           
            CHEMBIOCHEM Vol. 15 No. 17 p. 2503-2507 2014/11 Research paper (scientific journal)
           
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            Semisynthesis of a Post-Translationally Modified Protein by Using Chemical Cleavage and Activation of an Expressed Fusion Polypeptide
            
            
            
            
            
            
           
            Ryo Okamoto, Motoharu Kimura, Takeshi Ishimizu, Masayuki Izumi, Yasuhiro Kajihara
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 20 No. 33 p. 10425-10430 2014/08 Research paper (scientific journal)
           
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            Total Chemical Synthesis and Biological Activities of Glycosylated and Non-Glycosylated Forms of the Chemokines CCL1 and Ser-CCL1
            
            
            
            
            
            
           
            Ryo Okamoto, Kalyaneswar Mandal, Morris Ling, Andrew D. Luster, Yasuhiro Kajihara, Stephen B. H. Kent
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 53 No. 20 p. 5188-5193 2014/05 Research paper (scientific journal)
           
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            (Quasi-)Racemic X-ray Structures of Glycosylated and Non-Glycosylated Forms of the Chemokine Ser-CCL1 Prepared by Total Chemical Synthesis
            
            
            
            
            
            
           
            Ryo Okamoto, Kalyaneswar Mandal, Michael R. Sawaya, Yasuhiro Kajihara, Todd O. Yeates, Stephen B. H. Kent
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 53 No. 20 p. 5194-5198 2014/05 Research paper (scientific journal)
           
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            Both isoforms of human UDP-glucose:glycoprotein glucosyltransferase are enzymatically active
            
            
            
            
            
            
           
            Yoichi Takeda, Akira Seko, Masakazu Hachisu, Shusaku Daikoku, Masayuki Izumi, Akihiko Koizumi, Kohki Fujikawa, Yasuhiro Kajihara, Yukishige Ito
           
            GLYCOBIOLOGY Vol. 24 No. 4 p. 344-350 2014/04 Research paper (scientific journal)
           
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            Folding of Synthetic Homogeneous Glycoproteins in the Presence of a Glycoprotein Folding Sensor Enzyme
            
            
            
            
            
            
           
            Simone Dedola, Masayuki Izumi, Yutaka Makimura, Akira Seko, Akiko Kanamori, Masafumi Sakono, Yukishige Ito, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 53 No. 11 p. 2883-2887 2014/03 Research paper (scientific journal)
           
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            Safe and efficient Boc-SPPS for the synthesis of glycopeptide-alpha-thioesters
            
            
            
            
            
            
           
            Masayuki Izumi, Masumi Murakami, Ryo Okamoto, Yasuhiro Kajihara
           
            JOURNAL OF PEPTIDE SCIENCE Vol. 20 No. 2 p. 98-101 2014/02 Research paper (scientific journal)
           
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            Chemical assembly of N-glycoproteins: a refined toolbox to address a ubiquitous posttranslational modification
            
            
            
            
            
            
           
            Carlo Unverzagt, Yasuhiro Kajihara
           
            CHEMICAL SOCIETY REVIEWS Vol. 42 No. 10 p. 4408-4420 2013 Research paper (scientific journal)
           
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            Efficient synthesis of glycopeptide-alpha-thioesters with a high-mannose type oligosaccharide by means of tert-Boc-solid phase peptide synthesis
            
            
            
            
            
            
           
            Yutaka Makimura, Tatsuto Kiuchi, Masayuki Izumi, Simone Dedola, Yukishige Ito, Yasuhiro Kajihara
           
            CARBOHYDRATE RESEARCH Vol. 364 p. 41-48 2012/12 Research paper (scientific journal)
           
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            Homogeneous Human Complex-Type Oligosaccharides in Correctly Folded Intact Glycoproteins: Evaluation of Oligosaccharide Influence On Protein Folding, Stability, and Conformational Properties
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Yasutaka Tanabe, Shun Sasaoka, Ryo Okamoto
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 18 No. 19 p. 5944-5953 2012/05 Research paper (scientific journal)
           
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            Chemical Synthesis of Intentionally Misfolded Homogeneous Glycoprotein: A Unique Approach for the Study of Glycoprotein Quality Control
            
            
            
            
            
            
           
            Masayuki Izumi, Yutaka Makimura, Simone Dedola, Akira Seko, Akiko Kanamori, Masafumi Sakono, Yukishige Ito, Yasuhiro Kajihara
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 134 No. 17 p. 7238-7241 2012/05 Research paper (scientific journal)
           
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            Chemical Synthesis of Homogeneous Human Glycosyl-interferon-beta That Exhibits Potent Antitumor Activity in Vivo
            
            
            
            
            
            
           
            Izumi Sakamoto, Katsunari Tezuka, Kazuhiro Fukae, Kazuyuki Ishii, Keisuke Taduru, Masatoshi Maeda, Masaki Ouchi, Kenta Yoshida, Yuri Nambu, Jun Igarashi, Naohiro Hayashi, Takashi Tsuji, Yasuhiro Kajihara
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 134 No. 12 p. 5428-5431 2012/03 Research paper (scientific journal)
           
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            A Synthetic Approach to a Peptide alpha-Thioester from an Unprotected Peptide through Cleavage and Activation of a Specific Peptide Bond by N-Acetylguanidine
            
            
            
            
            
            
           
            Ryo Okamoto, Keiko Morooka, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 51 No. 1 p. 191-196 2012 Research paper (scientific journal)
           
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            Chemical Synthesis of an Erythropoietin Glycoform Containing a Complex-type Disialyloligosaccharide
            
            
            
            
            
            
           
            Masumi Murakami, Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 51 No. 15 p. 3567-3572 2012 Research paper (scientific journal)
           
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            A seven-transmembrane receptor that mediates avoidance response to dihydrocaffeic acid, a water-soluble repellent in Caenorhabditis elegans
            
            
            
            
            
            
           
            Reina Aoki, Tatsurou Yagami, Hiroyuki Sasakura, Ken Ichi Ogura, Yasuhiro Kajihara, Masakazu Ibi, Takeaki Miyamae, Fumio Nakamura, Taro Asakura, Yoshikatsu Kanai, Yoshimi Misu, Yuichi Iino, Marina Ezcurra, William R. Schafer, Ikue Mori, Yoshio Goshima
           
            Journal of Neuroscience Vol. 31 No. 46 p. 16603-16610 2011/11/16 Research paper (scientific journal)
           
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            40 The Precise Chemical Glycoprotein Synthesis Assigned by a Unique X-ray Crystallography(Oral Presentation)
            
            
            
            
           
            Okamoto R., Mandal Kalyaneswar, Sawaya Michael, Yeates Todd O., Kent Stephen B.H., Kajihara Y.
           
            Symposium on the Chemistry of Natural Products, symposium papers No. 53 p. 235-240 2011/09/02
           Publisher: Symposium on the chemistry of natural products
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            Unique Self-Anhydride Formation in the Degradation of Cytidine-5 '-monophosphosialic Acid (CMP-Neu5Ac) and Cytidine-5 '-diphosphosialic Acid (CDP-Neu5Ac) and its Application in CMP-sialic Acid Analogue Synthesis
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Sachiko Nishigaki, Daisuke Hanzawa, Go Nakanishi, Ryo Okamoto, Naoki Yamamoto
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 17 No. 27 p. 7645-7655 2011/06 Research paper (scientific journal)
           
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            Synthesis of bioactive homogenous glycoprotein analogue
            
            
            
            
           
            
           
            Vol. 61 No. 1 p. 47-61 2011
           Publisher:
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            Semisynthesis of Erythropoietin Analog Having Three Oligosaccharides
            
            
            
            
            
            
           
            Kiriko Hirano, Masayuki Izumi, Derek Macmillan, Katsunari Tezuka, Takashi Tsuji, Yasuhiro Kajihara
           
            JOURNAL OF CARBOHYDRATE CHEMISTRY Vol. 30 No. 4-6 p. 306-319 2011 Research paper (scientific journal)
           
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            Expanding the Scope of Native Chemical Ligation in Glycopeptide Synthesis
            
            
            
            
            
            
           
            Ryo Okamoto, Masayuki Izumi, Yasuhiro Kajihara
           
            INTERNATIONAL JOURNAL OF PEPTIDE RESEARCH AND THERAPEUTICS Vol. 16 No. 3 p. 191-198 2010/09 Research paper (scientific journal)
           
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            Unique cleavage of 2-acetamido-2-deoxy-D-glucose from the reducing end of biantennary complex type oligosaccharides
            
            
            
            
            
            
           
            Takefumi Murase, Yasuhiro Kajihara
           
            CARBOHYDRATE RESEARCH Vol. 345 No. 12 p. 1702-1707 2010/08 Research paper (scientific journal)
           
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            Synthesis of the glycosylated polypeptide chain of an inducible costimulator on T-cells
            
            
            
            
            
            
           
            Takefumi Murase, Yasuhiro Kajihara
           
            CARBOHYDRATE RESEARCH Vol. 345 No. 10 p. 1324-1330 2010/07 Research paper (scientific journal)
           
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            Total Synthesis of (-)-Tetrodotoxin from D-Glucose: A New Route to Multi-Functionalized Cyclitol Employing the Ferrier(II) Reaction toward (-)-Tetrodotoxin
            
            
            
            
            
            
           
            Shoji Akai, Hidehito Seki, Naoki Sugita, Tomokazu Kogure, Naoki Nishizawa, Katsuhiko Suzuki, Yutaka Nakamura, Yasuhiro Kajihara, Juji Yoshimura, Ken-ichi Sato
           
            BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN Vol. 83 No. 3 p. 279-287 2010/03 Research paper (scientific journal)
           
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            An alpha 2,3-Sialyltransferase from Photobacterium sp JT-ISH-224 Transfers N-Acetylneuraminic Acid to Both the O-2 and O-3' Hydroxyl Groups of Lactose
            
            
            
            
            
            
           
            Toshiki Mine, Hitomi Kajiwara, Takefumi Murase, Yasuhiro Kajihara, Takeshi Yamamoto
           
            JOURNAL OF CARBOHYDRATE CHEMISTRY Vol. 29 No. 2 p. 51-60 2010 Research paper (scientific journal)
           
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            SYNTHESIS OF GLYCOPEPTIDES
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Ryo Okamoto, Naoki Yamamoto, Masayuki Izumi
           
            METHODS IN ENZYMOLOGY, VOL 478: GLYCOMICS Vol. 478 p. 503-519 2010 Part of collection (book)
           
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            Synthesis of Heavily Glycosylated Peptide Thioester
            
            
            
            
            
            
           
            Kiriko Hirano, Yasuhiro Kajihara
           
            JOURNAL OF CARBOHYDRATE CHEMISTRY Vol. 29 No. 2 p. 84-91 2010 Research paper (scientific journal)
           
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            Definitive evidence that a single N-glycan among three glycans on inducible costimulator is required for proper protein trafficking and ligand binding
            
            
            
            
            
            
           
            Naoki Kamei, Rie Fukui, Yoshiyuki Suzuki, Yasuhiro Kajihara, Mitsuhiro Kinoshita, Kazuaki Kakehi, Hironobu Hojo, Katsunari Tezuka, Takashi Tsuji
           
            BIOCHEMICAL AND BIOPHYSICAL RESEARCH COMMUNICATIONS Vol. 391 No. 1 p. 557-563 2010/01 Research paper (scientific journal)
           
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            Chemical Synthesis of Homogeneous Glycopeptides and Glycoproteins
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Naoki Yamamoto, Ryo Okamoto, Kiriko Hirano, Takefumi Murase
           
            CHEMICAL RECORD Vol. 10 No. 2 p. 80-100 2010 Research paper (scientific journal)
           
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            Protein Cysteine Modifications: (2) Reactivity Specificity and Topics of Medicinal Chemistry and Protein Engineering
            
            
            
            
            
            
           
            N. Nagahara, T. Matsumura, R. Okamoto, Y. Kajihara
           
            CURRENT MEDICINAL CHEMISTRY Vol. 16 No. 34 p. 4490-4501 2009/12
           
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            Protein Cysteine Modifications: (1) Medicinal Chemistry for Proteomics
            
            
            
            
            
            
           
            N. Nagahara, T. Matsumura, R. Okamoto, Y. Kajihara
           
            CURRENT MEDICINAL CHEMISTRY Vol. 16 No. 33 p. 4419-4444 2009/11
           
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            Efficient and systematic synthesis of a small glycoconjugate library having human complex type oligosaccharides
            
            
            
            
            
            
           
            Takefumi Murase, Takashi Tsuji, Yasuhiro Kajihara
           
            CARBOHYDRATE RESEARCH Vol. 344 No. 6 p. 762-770 2009/04 Research paper (scientific journal)
           
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            Efficient Substitution Reaction from Cysteine to the Serine Residue of Glycosylated Polypeptide: Repetitive Peptide Segment Ligation Strategy and the Synthesis of Glycosylated Tetracontapeptide Having Acid Labile Sialyl-T-N Antigens
            
            
            
            
            
            
           
            Ryo Okamoto, Shingo Souma, Yasuhiro Kajihara
           
            JOURNAL OF ORGANIC CHEMISTRY Vol. 74 No. 6 p. 2494-2501 2009/03 Research paper (scientific journal)
           
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            Robust synthesis of N-linked branch-type oligosaccharides is going to uncover the function of oligosaccharides
            
            
            
            
           
            KAJIHARA Yasuhiro
           
            TIGG Vol. 21 No. 117 p. 45-47 2009/01/31
           Publisher: FCCA(Forum: Carbohydrates Coming of Age)
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            Design and Synthesis of a Homogeneous Erythropoietin Analogue with Two Human Complex-Type Sialyloligosaccharides: Combined Use of Chemical and Bacterial Protein Expression Methods
            
            
            
            
            
            
           
            Kiriko Hirano, Derek Macmillan, Katsunari Tezuka, Takashi Tsuji, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 48 No. 50 p. 9557-9560 2009 Research paper (scientific journal)
           
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            2D Selective-TOCSY-DQFCOSY and HSQC-TOCSY NMR experiments for assignment of a homogeneous asparagine-linked triantennary complex type undecasaccharide
            
            
            
            
            
            
           
            Hajime Sato, Kazuhiro Fukae, Yasuhiro Kajihara
           
            Carbohydrate Research Vol. 343 No. 8 p. 1333-1345 2008/06/09 Research paper (scientific journal)
           
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            Efficient synthesis of MUC4 sialylglycopeptide through the new sialylation using 5-acetamido-neuraminamide donors
            
            
            
            
            
            
           
            Ryo Okamoto, Shingo Souma, Yasuhiro Kajihara
           
            JOURNAL OF ORGANIC CHEMISTRY Vol. 73 No. 9 p. 3460-3466 2008/05 Research paper (scientific journal)
           
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            Chemical synthesis of a glycoprotein having an intact human complex-type sialyloligosaccharide under the Boc and Fmoc synthetic strategies
            
            
            
            
            
            
           
            Naoki Yamamoto, Yasutaka Tanabe, Ryo Okamoto, Philip E. Dawson, Yasuhiro Kajihara
           
            JOURNAL OF THE AMERICAN CHEMICAL SOCIETY Vol. 130 No. 2 p. 501-510 2008/01 Research paper (scientific journal)
           
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            Uncovering a latent ligation site for glycopeptide synthesis
            
            
            
            
            
            
           
            Ryo Okamoto, Yasuhiro Kajihara
           
            ANGEWANDTE CHEMIE-INTERNATIONAL EDITION Vol. 47 No. 29 p. 5402-5406 2008 Research paper (scientific journal)
           
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            Synthesis of CMP-9"-modified-sialic acids as donor substrate analogues for mammalian and bacterial sialyltransferases
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Toshimi Kamitani, Reiko Sato, Naoki Kamei, Tatsuo Miyazaki, Ryo Okamoto, Thoru Sakakibara, Takashi Tsuji, Takeshi Yamamoto
           
            CARBOHYDRATE RESEARCH Vol. 342 No. 12-13 p. 1680-1688 2007/09 Research paper (scientific journal)
           
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            P-54 Chemical Synthesis of small glycoproteins having human complex type oligosaccharide
            
            
            
            
           
            Kajihara Yasuhiro, Okamoto Ryo, Sasaoka Shun, Tanabe Yasutaka
           
            Symposium on the Chemistry of Natural Products, symposium papers No. 49 p. 637-642 2007/08/24
           Publisher: Symposium on the chemistry of natural products
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            Solid-state O-17 NMR in biological solids: Efficient O-17 labeling of amino acids and peptides
            
            
            
            
            
            
           
            Kazuhiko Yamada, Toshio Yamazaki, Miwako Asanuma, Hiroshi Hirota, Naoki Yamamoto, Yasuhiro Kajihara
           
            CHEMISTRY LETTERS Vol. 36 No. 1 p. 192-193 2007/01 Research paper (scientific journal)
           
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            An approach for a synthesis of asparagine-linked sialylglycopeptides having intact and homogeneous complex-type undecadisialyloligosaccharides
            
            
            
            
            
            
           
            Naoki Yamamoto, Ayumi Takayanagi, Ayako Yoshino, Tohru Sakakibara, Yasuhiro Kajihara
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 13 No. 2 p. 613-625 2007 Research paper (scientific journal)
           
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            Convenient synthesis of a sialylglycopeptide-thioester having an intact and homogeneous complex-type disialyl-oligosaccharide
            
            
            
            
            
            
           
            Yasuhiro Kajihara, Akiko Yoshihara, Kiriko Hirano, Naoki Yamamoto
           
            CARBOHYDRATE RESEARCH Vol. 341 No. 10 p. 1333-1340 2006/07 Research paper (scientific journal)
           
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            An improvement in the bending ability of a hinged trisaccharide with the assistance of a sugar-sugar interaction
            
            
            
            
            
            
           
            H Yuasa, T Izumi, N Mitsuhashi, Y Kajihara, H Hashimoto
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 11 No. 22 p. 6478-6490 2005/11 Research paper (scientific journal)
           
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            Synthesis and evaluation of 5-thio-L-fucose-containing oligosaccharide
            
            
            
            
            
            
           
            M Izumi, O Tsuruta, Y Kajihara, S Yazawa, H Yuasa, H Hashimoto
           
            CHEMISTRY-A EUROPEAN JOURNAL Vol. 11 No. 10 p. 3032-3038 2005/05 Research paper (scientific journal)
           
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            An unambiguous assignment method by 2D selective-TOCSY-HSQC and selective-TOCSY-DQFCOSY and structural analysis by selective-TOCSY-NOESY experiments of a biantennary undecasaccharide
            
            
            
            
           
            Hajime Sato, Yasuhiro Kajihara
           
            Carbohydrate Research Vol. 340 No. 3 p. 469-479 2005/02/28 Research paper (scientific journal)
           
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            Synthesis of 2-[(2-pyridyl)amino]ethyl beta-D-lactosaminide and evaluation of its acceptor ability for sialyltransferase: a comparison with 4-methylumbelliferyl and dansyl beta-D-lactosaminide
            
            
            
            
            
            
           
            Y Kajihara, D Kamiyama, N Yamamoto, T Sakakibara, M Izumi, H Hashimoto
           
            CARBOHYDRATE RESEARCH Vol. 339 No. 8 p. 1545-1550 2004/06 Research paper (scientific journal)
           
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            Convenient synthesis of a glycopeptide analogue having a complex type disialyl-undecasaccharide
            
            
            
            
            
            
           
            Naoki Yamamoto, Tohru Sakakibara, Yasuhiro Kajihara
           
            Tetrahedron Letters Vol. 45 No. 16 p. 3287-3290 2004/04/12 Research paper (scientific journal)
           
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            Chemoenzymatic synthesis of diverse asparagine-linked alpha-(2,3)-sialyloligosaccharides
            
            
            
            
            
            
           
            K Fukae, N Yamamoto, Y Hatakeyama, Y Kajihara
           
            GLYCOCONJUGATE JOURNAL Vol. 21 No. 5 p. 243-250 2004 Research paper (scientific journal)
           
            
            
              
         
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            Sialylation of Oligosaccharide on a Protein by Chemoenzymatic Method
            
            
            
            
           
            KAJIHARA Yasuhiro
           
            J. Synth. Org. Chem. Jpn. Vol. 58 No. 2 p. 138-146 2000/02/01
           Publisher: The Society of Synthetic Organic Chemistry, Japan
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            Galactosyl transfer ability of beta-(1 -> 4)-galactosyltransferase toward 5a-carba-sugars
            
            
            
            
            
            
           
            Y Kajihara, H Hashimoto, S Ogawa
           
            CARBOHYDRATE RESEARCH Vol. 323 No. 1-4 p. 44-48 2000/01 Research paper (scientific journal)
           
            
            
              
         
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            Enzymatic synthesis of Kdn oligosaccharides by a bacterial alpha-(2 -> 6)-sialyltransferase
            
            
            
            
            
            
           
            Y Kajihara, S Akai, T Nakagawa, R Sato, T Ebata, H Kodama, K Sato
           
            CARBOHYDRATE RESEARCH Vol. 315 No. 1-2 p. 137-141 1999/01 Research paper (scientific journal)
           
            
            
              
         
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            Novel aspects of interaction between UDP-Gal and GlcNAc beta-1,4-galactosyltransferase: Transferability and remarkable inhibitory activity of UDP-(mono-O-methylated gal), UDP-Fuc and UDP-Man
            
            
            
            
            
            
           
            T Endo, Y Kajihara, H Kodama, H Hashimoto
           
            BIOORGANIC & MEDICINAL CHEMISTRY Vol. 4 No. 11 p. 1939-1948 1996/11 Research paper (scientific journal)
           
            
            
              
         
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            ENZYMATIC TRANSFER OF 6-MODIFIED D-GALACTOSYL RESIDUES - SYNTHESIS OF BIANTENNARY PENTA-SACCHARIDES AND HEPTA-SACCHARIDES HAVING 2 6-DEOXY-D-GALACTOSE RESIDUES AT THE NONREDUCING END AND EVALUATION OF 6-DEOXY-D-GALACTOSYL TRANSFER TO GLYCOPROTEIN USING BOVINE BETA-(1-]4)-GALACTOSYLTRANSFERASE AND UDP-6-DEOXY-D-GALACTOSE
            
            
            
            
            
            
           
            Y KAJIHARA, T ENDO, H OGASAWARA, H KODAMA, H HASHIMOTO
           
            CARBOHYDRATE RESEARCH Vol. 269 No. 2 p. 273-294 1995/04 Research paper (scientific journal)
           
            
            
              
         
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            SYNTHESIS OF UDP-6-DEOXY-D-GALACTOSES AND UDP-6-FLUORO-D-GALACTOSES AND THEIR ENZYMATIC GLYCOSYL TRANSFER TO MONOANTENNARY AND BIANTENNARY CARBOHYDRATE CHAINS
            
            
            
            
            
            
           
            H KODAMA, Y KAJIHARA, T ENDO, H HASHIMOTO
           
            TETRAHEDRON LETTERS Vol. 34 No. 40 p. 6419-6422 1993/10 Research paper (scientific journal)
           
            
            
              
         
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            METHYL-3-O-(2-ACETAMIDO-2-DEOXY-6-THIO-BETA-D-GLUCOPYRANOSYL)-BETA-D-GALACTOPYRANOSIDE - A SLOW REACTING ACCEPTOR-ANALOG WHICH INHIBITS GLYCOSYLATION BY UDP-D-GALACTOSE-N-ACETYL-D-GLUCOSAMINE-(1-]4)-BETA-D-GALACTOSYLTRANSFERASE
            
            
            
            
            
            
           
            Y KAJIHARA, H HASHIMOTO, H KODAMA
           
            CARBOHYDRATE RESEARCH Vol. 229 No. 1 p. C5-C9 1992/05 Research paper (scientific journal)