AP-2 complex subunit sigma is a protein that in humans is encoded by the AP2S1gene.123
One of two major clathrin-associated adaptor complexes, AP-2, is a heterotetramer which is associated with the plasma membrane. This complex is composed of two large chains, a medium chain, and a small chain. This gene encodes the small chain of this complex. Alternative splicing has been observed in this gene and results in two known transcripts.3
^Winterpacht A, Endele S, Enklaar T, Fuhry M, Zabel B (Mar 1997). "Human CLAPS2 encoding AP17, a small chain of the clathrin-associated protein complex: cDNA cloning and chromosomal assignment to 19q13.2→q13.3". Cytogenet Cell Genet75 (2–3): 132–5. doi:10.1159/000134463. PMID9040778.
^Holzmann K, Poltl A, Sauermann G (Nov 1998). "A novel spliced transcript of human CLAPS2 encoding a protein alternative to clathrin adaptor protein AP17". Gene220 (1–2): 39–44. doi:10.1016/S0378-1119(98)00406-5. PMID9767099.
Kirchhausen T, Davis AC, Frucht S, et al. (1991). "AP17 and AP19, the mammalian small chains of the clathrin-associated protein complexes show homology to Yap17p, their putative homolog in yeast". J. Biol. Chem.266 (17): 11153–7. PMID2040623.