Title : Conformational stability of a thrombin-binding peptide derived from the hirudin C-terminus.

Pub. Date : 1992 Mar 10

PMID : 1547237






5 Functional Relationships(s)
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1 The global folding of these conformations is similar to that in the thrombin-bound state, as indicated by NOE"s involving the side-chain protons of residues Phe(56), Ile(59), Pro(60), Tyr(63), and Leu(64). Isoleucine coagulation factor II, thrombin Homo sapiens
2 An analysis of the side-chain rotamers revealed that, upon binding to thrombin, there may be a rotation around the alpha CH-beta CH bond of Ile(59) such that Ile(59) adopts a gauche- (chi 1 = +60) conformation in contrast to the highly populated trans (chi 1 = -60) found for Ile(59) in the free peptide. Isoleucine coagulation factor II, thrombin Homo sapiens
3 An analysis of the side-chain rotamers revealed that, upon binding to thrombin, there may be a rotation around the alpha CH-beta CH bond of Ile(59) such that Ile(59) adopts a gauche- (chi 1 = +60) conformation in contrast to the highly populated trans (chi 1 = -60) found for Ile(59) in the free peptide. Isoleucine coagulation factor II, thrombin Homo sapiens
4 An analysis of the side-chain rotamers revealed that, upon binding to thrombin, there may be a rotation around the alpha CH-beta CH bond of Ile(59) such that Ile(59) adopts a gauche- (chi 1 = +60) conformation in contrast to the highly populated trans (chi 1 = -60) found for Ile(59) in the free peptide. Isoleucine coagulation factor II, thrombin Homo sapiens
5 The apparent preference for a gauche- (chi 1 = +60) side-chain conformation of Ile(59) in the bound state may be explained by the existence of a positively charged arginine residue among the hydrophobic residues in the thrombin exosite. Isoleucine coagulation factor II, thrombin Homo sapiens