Stromal antigen 3-like 1 (pseudogene), or, STAG3L1, is a human gene. Other names include: Putative STAG3-like protein 1; Stromal antigen 3-like protein 1; STAG3L1P; STAG3L3. The encoded protein has an amino acid length of 205 and a mass of 23.8 kDa. Stromal antigen 3-like 1 (pseudogene) is a member of the SCC3 family.