BRAG2, or IQ motif and Sec7 domain 1, is a human gene encoded by IQSEC1. It may also be known as: IQ motif and SEC7 domain-containing protein 1; ADP-ribosylation factors guanine nucleotide-exchange protein 100; ADP-ribosylation factors guanine nucleotide-exchange protein 2; Brefeldin-resistant Arf-GEF 2 protein; brefeldin A-resistant ARF-GEF2; ARF-GEP100; ARFGEP100; GEP100. The encoded protein has an amino acid length of 963 and a mass of 108.3 kDa. Other isoforms may exist. BRAG2 is a member of the BRAG family. Homologs of this gene exist in other organisms, including: Mouse, Rat, Frog, Chicken.