モデルペプチドを用いたコラーゲンの構造研究 [in Japanese] Triple-Helical Structure of Collagen Based on Single-Crystal Analyses of Model Peptides [in Japanese]
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Recent structure analyses of collagen-model peptides revealed several important structural features of collagen. (1) Contrary to the Rich and Crick 10/3-helix, the 7/2-helical conformation is preferable as a structure of collagen. (2) The triple-helical structure is stabilized by a repetitive X (C=O) --- HN (Gly) hydrogen bonds. If X is not Pro or Hyp, the water-bridge, Gly (C=O) --- H<SUB>2</SUB>O --- HN (X), also stabilize the triple-helical structure. (3) The stabilization of collagen by Hyp can be attributed to the inductive effect of the hydroxyl moiety attached to the Cγ of Pro.
X-RAYS 42(4), 346-353, 2000-08-31
The Crystallographic Society of Japan