AP2S1, AP17, CLAPS2, AP-2 complex subunit sigma, Adapter-related protein complex 2 sigma subunit, Adaptor protein complex AP-2 subunit sigma, Clathrin assembly protein 2 small chain, Clathrin coat assembly protein AP17, Clathrin coat-associated protein AP17, HA2 17kD subunit, Plasma membrane adaptor AP-2 17kD protein, Sigma2-adaptin

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.