Small ubiquitin-related modifier 2, SuMO-2, SuMO-3, Sentrin-2, HSMT3, SMT3B, SMT3H2, Small ubiquitin-related modifier 2 SMT3 suppressor of mif two 3 homolog 2 (S, cerevisiae), HSMT 3, MGC117191, Sentrin 2, Sentrin2, Small ubiquitin like modifier 2, Small ubiquitin related modifier 2, SMT 3B, SMT3 homolog 2, SMT3 suppressor of mif two 3 homolog 2, Sumo2, Sumo3, ubiquitin like protein SMT3B.