AA517111, Basement membrane protein 40, BM 40, BM40, Cysteine rich protein, hm:zeh0062, MGC128090, ON, Osteonectin, Secreted acidic cystein rich glycoprotein, Secreted protein acidic and rich in cysteine, Secreted protein acidic cysteine rich (osteonectin), Secreted protein acidic cysteine rich, SPRC, SPRC_ .
Appears to regulate cell growth through interactions with the extracellular matrix and cytokines. Binds calcium and copper, several types of collagen, albumin, thrombospondin, PDGF and cell membranes. There are two calcium binding sites, an acidic domain that binds 5 to 8 Ca(2+) with a low affinity and an EF-hand loop that binds a Ca(2+) ion with a high affinity.
