| Project/Area Number |
23380065
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Bioproduction chemistry/Bioorganic chemistry
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| Research Institution | Osaka University (2013)
Tokai University (2011-2012) |
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Principal Investigator |
HOJO Hironobu 大阪大学, たんぱく質研究所, 教授 (00209214)
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| Co-Investigator(Renkei-kenkyūsha) |
KATAYAMA Hidekazu 東海大学, 工学部, 講師 (30580857)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥11,310,000 (Direct Cost: ¥8,700,000、Indirect Cost: ¥2,610,000)
Fiscal Year 2013: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2011: ¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
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| Keywords | 糖タンパク質 / グライコデリン / 糖ペプチドチオエステル / セグメント縮合法 / LacdiNAc / glycodelin / ペプチドチオエステル / 化学合成 |
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| Research Abstract |
Glycodelin A (GdA), a glycoprotein of 162 amino acid residues, has unusual carbohydrate structures composed of GalNAc-GlcNAc (LacdiNAc), and is engaged in important biological processes, such as fertilization. To promote the functional analysis of GdA as well as LacdiNAc-containing glycan, an access to GdA having homogeneous glycan is required. In this research, the efficient synthetic route of GdA having homogeneous glycan was examined. The synthesis of LacdiNAc-containing carbohydrate was realized by our benzyl-protection strategy. The polypeptide composed of the entire GdA sequence carrying GlcNAcs was then assembled by the native chemical ligation method combined with our N-alklycysteine-assisted thioesterification method. After folding, GdA having GlcNAcs was reacted with LacdiNAc sugar by glycosynthase to derivatize into GdA having LacdiNAc sugar.
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