Plasmodium subtilisin 2 (Sub2) is a multidomain protein that plays an important role in malaria infection. This domain is a conserved region of the inhibitory prodomain of Sub2 from Plasmodium falciparum, termed prosub2 which has structural similarity to bacterial and mammalian subtilisin-like prodomains.

1: Solution NMR structure of a sheddase inhibitor prodomain from the malarial parasite Plasmodium falciparum. He Y, Chen Y, Oganesyan N, Ruan B, O'Brochta D, Bryan PN, Orban J; Proteins. 2012;80:2810-2817. PMID:23011838