SUMO2 is a symbol for the gene, Small ubiquitin-like modifier 2, in humans. Other names include: Small ubiquitin-related modifier 2; HSMT3; SMT3 homolog 2; SUMO-3; Sentrin-2; Ubiquitin-like protein SMT3B; Smt3B; SMT3H2. The encoded protein has an amino acid length of 95 and a mass of 10.9 kDa. Other isoforms may exist. SUMO2 is a member of the Ubiquitin family, SUMO subfamily. This gene shares homology with other species, including: Mouse, Rat, Arabidopsis, Zebrafish, Frog, Chicken.