This family represents the precursor proteins for a number of short antimicrobial peptides called Latarcins. Latarcins were discovered in the venom of the spider Lachesana tarabaevi [1]. Latarcins are likely to adopt amphipathic alpha-helical structure in the plasma membrane.

1: Latarcins, antimicrobial and cytolytic peptides from the venom of the spider Lachesana tarabaevi (Zodariidae) that exemplify biomolecular diversity. Kozlov SA, Vassilevski AA, Feofanov AV, Surovoy AY, Karpunin DV, Grishin EV; J Biol Chem. 2006;281:20983-20992. PMID:16735513