Article
Factor VIII C1 domain residues Lys 2092 and Phe 2093 contribute to membrane binding and cofactor activity.
Blood - 29 Oct 2009
Meems Henriët, Meijer Alexander B, Cullinan David B, Mertens Koen, Gilbert Gary E
Abstract excerpt
Binding of factor VIII to membranes containing phosphatidyl-L-serine (Ptd-L-Ser) is mediated, in part, by a motif localized to the C2 domain. We evaluated a putative membrane-binding role of the C1 domain using an anti-C1 antibody fragment, KM33(scFv), and factor VIII mutants with an altered KM33 epitope. We prepared a dual mutant Lys2092/Phe2093 --> Ala/Ala (fVIII(YFP 2092/93)) and 2 single mutants Lys2092 -->...
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