Aiming to extend the knowledge about the diversity of bradykinin-potentiating peptides (BPPs) and their precursor proteins, a venom gland cDNA library from the South American rattlesnake (Crotalus dursissus terrificus, Cdt) was screened. Two novel homologous cDNAs encoding the BPPs precursor protein were cloned. Their sequence contain only one single longer BPP sequence with the typical IPP-tripeptide, and two ...