1d7p
From Proteopedia
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'''Crystal structure of the c2 domain of human factor viii at 1.5 a resolution at 1.5 A''' | '''Crystal structure of the c2 domain of human factor viii at 1.5 a resolution at 1.5 A''' | ||
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[[Category: Shen, B W.]] | [[Category: Shen, B W.]] | ||
[[Category: Stoddard, B L.]] | [[Category: Stoddard, B L.]] | ||
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| - | [[Category: | + | [[Category: Blood clotting]] |
| - | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Fri May 2 13:32:29 2008'' | |
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Revision as of 10:32, 2 May 2008
Crystal structure of the c2 domain of human factor viii at 1.5 a resolution at 1.5 A
Overview
Human factor VIII is a plasma glycoprotein that has a critical role in blood coagulation. Factor VIII circulates as a complex with von Willebrand factor. After cleavage by thrombin, factor VIIIa associates with factor IXa at the surface of activated platelets or endothelial cells. This complex activates factor X (refs 6, 7), which in turn converts prothrombin to thrombin in the presence of factor Va (refs 8, 9). The carboxyl-terminal C2 domain of factor VIII contains sites that are essential for its binding to von Willebrand factor and to negatively charged phospholipid surfaces. Here we report the structure of human factor VIII C2 domain at 1.5 A resolution. The structure reveals a beta-sandwich core, from which two beta-turns and a loop display a group of solvent-exposed hydrophobic residues. Behind the hydrophobic surface lies a ring of positively charged residues. This motif suggests a mechanism for membrane binding involving both hydrophobic and electrostatic interactions. The structure explains, in part, mutations in the C2 region of factor VIII that lead to bleeding disorders in haemophilia A.
About this Structure
1D7P is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Structure of the C2 domain of human factor VIII at 1.5 A resolution., Pratt KP, Shen BW, Takeshima K, Davie EW, Fujikawa K, Stoddard BL, Nature. 1999 Nov 25;402(6760):439-42. PMID:10586887 Page seeded by OCA on Fri May 2 13:32:29 2008
