This family consists of mammalian neurexophilin proteins. Mammalian brains contain four different neurexophilin proteins. Neurexophilins form a family of related glycoproteins that are proteolytically processed after synthesis and bind to alpha-neurexins. The structure and characteristics of neurexophilins indicate that they function as neuropeptides that may signal via alpha-neurexins [1].

1: Neurexophilins form a conserved family of neuropeptide-like glycoproteins. Missler M, Sudhof TC; J Neurosci 1998;18:3630-3638. PMID:9570794