The protein encoded by this gene is a member of the pexin
family. It is found in serum and tissues and promotes cell adhesion
and spreading, inhibits the membrane-damaging effect of the
terminal cytolytic complement pathway, and binds to several serpin
serine protease inhibitors. It is a secreted protein and exists in
either a single chain form or a clipped, two chain form held
together by a disulfide bond.
