Multimerin-1 (MMRN1)

Carrier protein for platelet (but not plasma) variable V/Va. Plays a role in the storage and stabilization of variable V in platelets.

Upon launch after platelet activation, may limit platelet and plasma factor Va-dependent thrombin generation. Ligand for integrin alpha-IIb/beta-3 and integrin alpha-V/beta-3 on activated platelets, and may be the extracellular matrix or glue protein.