Probable calcium-dependent phospholipid-binding protein that may play a role in calcium-mediated intracellular processes. Interacts (via VWFA domain) with ACTB, BCOR, BICD2, CCDC22, CDC42BPB, CEP162, MYCBP2, NONO, PDCD6, PITPNM2, RDX, SKIL, SKT, SPTBN1, UBE2O and WTAP. Belongs to the copine family.