Human FCGR3A, known as Fc gamma RIIIA, and CD16a with F176V mutation, GenBank Accession No. NM_001127593.1, a.a. 17-208, with a C-terminal Avi-His-Tag^TM, expressed in a HEK293 cell expression system. MW = 25 kDa. This protein runs at a higher MW by SDS-PAGE due to glycosylation.