1KYJ

Tumor Associated Mucin Motif from CD43 protein

「1SIA」から置き換えられました

1KYJ の概要

• エントリーDOI: 10.2210/pdb1kyj/pdb
• NMR情報: BMRB: 5301
• 分子名称: Leukosialin (CD43) fragment, 2-acetamido-2-deoxy-alpha-D-galactopyranose (2 entities in total)
• 機能のキーワード: leukosialin, cd43, mucin glycoprotein, glycoprotein, immune system
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 1167.17

構造登録者

Coltart, D.M.,Williams, L.J.,Glunz, P.W.,Sames, D.,Kuduk, S.D.,Schwarz, J.B.,Chen, X.-T.,Royyuru, A.K.,Danishefsky, S.D.,Live, D.H. (登録日: 2002-02-04, 公開日: 2002-02-20, 最終更新日: 2024-10-09)

主引用文献

Coltart, D.M.,Royyuru, A.K.,Williams, L.J.,Glunz, P.W.,Sames, D.,Kuduk, S.D.,Schwarz, J.B.,Chen, X.T.,Danishefsky, S.J.,Live, D.H.
Principles of Mucin Architecture: Structural Studies on Synthetic Glycopeptides Bearing Clustered Mono-, Di-, Tri-, and Hexasaccharide Glycodomains
J.Am.Chem.Soc., 124:9833-9844, 2002

PubMed Abstract: The structural characteristics of a mucin glycopeptide motif derived from the N-terminal fragment STTAV of the cell surface glycoprotein CD43 have been investigated by NMR. In this study, a series of molecules prepared by total synthesis were examined, consisting of the peptide itself, three glycopeptides having clustered sites of alpha-O-glycosylation on the serine and threonine side chains with the Tn, TF, and STF carbohydrate antigens, respectively, and one with the beta-O-linked TF antigen. Additionally, a glycopeptide having the sequence SSSAVAV, triglycosylated with the Le(y) epitope, was investigated. NMR data for the tri-STF-STTAV glycopeptide were used to solve the structure of this construct through restrained molecular dynamics calculations. The calculations revealed a defined conformation for the glycopeptide core rooted in the interaction of the peptide and the first N-acetylgalactosamine residue. The similarity of the NMR data for each of the alpha-O-linked glycopeptides demonstrates that this structure persists for each construct and that the mode of attachment of the first sugar and the peptide is paramount in establishing the organization of the core. The core provides a common framework on which a variety of glycans may be displayed. Remarkably, while there is a profound organizational effect on the peptide backbone with the alpha-linked glycans, attachment via a beta-linkage has little apparent consequence.

PubMed: 12175243
DOI: 10.1021/ja020208f

実験手法

SOLUTION NMR