Structure of the C2 domain of human factor VIII at 1.5 Å resolution
Structure of the C2 domain of human factor VIII at 1.5 Å resolution
复制标题
人因子 VIII C2 结构域的结构(1.5Å 分辨率)
作者:
K. Pratt;B. Shen;K. Takeshima;E. Davie;K. Fujikawa;B. Stoddard
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 Å resolution. The structure reveals a β-sandwich core, from which two β-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.
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DOI:
10.1042/bj3320549
发表时间:
1998
期刊:
The Biochemical journal
影响因子:
--
作者:
Veeraraghavan,S;Baleja,JD;Gilbert,GE
通讯作者:
Gilbert,GE
影响因子:
2.9
作者:
WOLFENDEN, R;ANDERSSON, L;SOUTHGATE, CCB
通讯作者:
SOUTHGATE, CCB
影响因子:
20.3
作者:
Kane,WH;Davie,EW
通讯作者:
Davie,EW
DOI:
10.1016/s0021-9258(18)42587-2
发表时间:
1992-04
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
E. J. Duffy;P. Lollar
通讯作者:
E. J. Duffy;P. Lollar
DOI:
10.1107/s0907444999010987
发表时间:
1999
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Nieh,YP;Zhang,KY
通讯作者:
Zhang,KY