Component of the ESCRT-I complex, a regulator of vesicular trafficking process. Required for the sorting of endocytic ubiquitinated cargos into multivesicular bodies. May be involved in cell growth and differentiation. Component of the ESCRT-I complex (endosomal sorting complex required for transport I) which consists of TSG101, VPS28, a VPS37 protein (VPS37A to -D) and MVB12A or MVB12B in a 1:1:1:1 stoichiometry. Interacts with TSG101, VPS28 and HGS. Component of an ESCRT-I complex (endosomal sorting complex required for transport I) which consists of TSG101, VPS28, VPS37A and UBAP1 in a 1:1:1:1 stoichiometry. Widely expressed. Examined tissues include heart, brain, placenta, liver, skeletal muscle, kidney and pancreas. More abundant in liver. Strongly decreased or undetected in hepatomas. The disease is caused by variants affecting the gene represented in this entry. Belongs to the VPS37 family. Truncated N-terminus.