Family of putative transmembrane GTPase. The fzo protein is a mediator of mitochondrial fusion [1]. This conserved region is also found in the human mitofusin protein [2].

1: Developmentally regulated mitochondrial fusion mediated by a conserved, novel, predicted GTPase. Hales KG, Fuller MT; Cell 1997;90:121-129. PMID:9230308

2: Control of mitochondrial morphology by a human mitofusin. Santel A, Fuller MT; J Cell Sci 2001;114:867-874. PMID:11181170