CRPM, or SH3-domain binding protein 2, is a human gene encoded by SH3BP2. It may also be known as: SH3 domain-binding protein 2; 3BP-2; 3BP2; CRBM; RES4-23. The encoded protein has an amino acid length of 561 and a mass of 62.2 kDa. Other isoforms may exist. Homologs of this gene exist in other organisms, including: Mouse, Rat, Zebrafish, Frog, Chicken.