Abl-interactor 1 is a human gene encoded by the symbol, ABI1. It may also be known as: Abelson interactor 1; Abi-1; Abl-binding protein 4; AblBP4; Eps8 SH3 domain-binding protein; Eps8-binding protein; Nap1-binding protein; Nap1BP; Spectrin SH3 domain-binding protein 1; e3B1; SSH3BP; SSH3BP1; abl-interactor 1. The encoded protein has an amino acid length of 508 and a mass of 55.1 kDa. Other isoforms may exist. Abl-interactor 1 is a member of the ABI family. Homologs of this gene exist in other organisms, including: Mouse, Frog.