BOPS is an alias for the gene, Additional sex combs like 1, transcriptional regulator, in humans. Other names include: Putative Polycomb group protein ASXL1; Additional sex combs-like protein 1; additional sex combs like transcriptional regulator 1. The encoded protein has an amino acid length of 1541 and a mass of 165.4 kDa. Other isoforms may exist. BOPS is a member of the Asx family. This gene shares homology with other species, including: Mouse, Rat, Zebrafish, Frog, Chicken.