Component of the ESCRT-I complex (endosomal sorting complex required for transport I), a regulator of vesicular trafficking process. Required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies (MVBs) (By similarity). Component of the endosomal sorting required for transport complex I (ESCRT-I), composed of ELC, VPS28 and VPS37. Interacts with ELC. May be due to a competing acceptor splice site. Belongs to the VPS37 family.