This is a family of vacuolar-sorting proteins 54, from eukaryotes. Along with VPS52 and VPS53 this forms the Golgi-associated retrograde protein complex GARP [1]. VPS54 is separated into N- and C-terminal regions each of which has a different function. This N-terminal family of is important for GARP complex assembly and stability, whereas the C-terminal domain, Pfam:PF07928, brings about localisation to an early endocytic compartment [2].

1: Requirement of the human GARP complex for mannose 6-phosphate-receptor-dependent sorting of cathepsin D to lysosomes. Perez-Victoria FJ, Mardones GA, Bonifacino JS; Mol Biol Cell. 2008;19:2350-2362. PMID:18367545

2: Domains within the GARP subunit Vps54 confer separate functions in complex assembly and early endosome recognition. Quenneville NR, Chao TY, McCaffery JM, Conibear E; Mol Biol Cell. 2006;17:1859-1870. PMID:16452629