Snake venom natriuretic peptide that shows an increase in perfusion pressure, urinary flow and glomerular filtration rate. Reduces total and proximal tubular transport of sodium. In the aortic ring assay, causes a relaxant effect in endothelium-intact thoracic aortic rings precontracted with phenylephrine in the presence and absence of isatin, a natriuretic receptor antagonist. Expressed by the venom gland. Belongs to the natriuretic peptide family.