This domain is found in Lysosome-associated membrane glycoprotein 2 from humans (Lamp2) and similar proteins from vertebrates. Lamp2 is an integral membrane protein that plays an important role in chaperone-mediated autophagy (CMA), targeting pertinent proteins for lysosomal degradation. This protein is organised into two conserved luminal domains, a single transmembrane domain (this entry) and a short C-terminal cytosolic tail. It adopts a trimeric configuration, and the transmembrane domains of the three monomers form a three-helix bundle structure [1].

1: Structure of transmembrane domain of lysosome-associated membrane protein type 2a (LAMP-2A) reveals key features for substrate specificity in chaperone-mediated autophagy. Rout AK, Strub MP, Piszczek G, Tjandra N; J Biol Chem. 2014;289:35111-35123. PMID:25342746