Purity ~85% (SDS-PAGE). PF4V1 belongs to the intercrine alpha (chemokine CxC) family. It is a inhibitor of angiogenesis and inhibitor of endothelial cell chemotaxis (in vitro). Binding to heparin is much weaker than in the close homolog PF4/CXCL4. Source: Recombinant protein corresponding to aa31-104 from human PF4V1, fused to His-tag at N-terminus, expressed in E.coli. Molecular Weight: ~10.6kD (97aa), confirmed by MALDI-TOF Applications: Suitable for use in SDS-PAGE.