[Brain natriuretic peptide 32]: Cardiac hormone that plays a key role in mediating cardio-renal homeostasis (PubMed:1672777, PubMed:17372040, PubMed:1914098, PubMed:9458824). May also function as a paracrine antifibrotic factor in the heart (By similarity). Acts by specifically binding and stimulating NPR1 to produce cGMP, which in turn activates effector proteins that drive various biological responses (PubMed:1672777, PubMed:17349887, PubMed:17372040, PubMed:21098034, PubMed:25339504, PubMed:9458824). Involved in regulating the extracellular fluid volume and maintaining the fluid- electrolyte balance through natriuresis, diuresis, vasorelaxation, and inhibition of renin and aldosterone secretion (PubMed:1914098, PubMed:9458824). Binds the clearance receptor NPR3 (PubMed:16870210). {ECO:0000250|UniProtKB:P40753, ECO:0000269|PubMed:1672777, ECO:0000269|PubMed:16870210, ECO:0000269|PubMed:17349887, ECO:0000269|PubMed:17372040, ECO:0000269|PubMed:1914098, ECO:0000269|PubMed:21098034, ECO:0000269|PubMed:25339504, ECO:0000269|PubMed:9458824}. [NT-proBNP]: May affect cardio-renal homeostasis (PubMed:17372040). Able to promote the production of cGMP although its potency is very low compared to brain natriuretic peptide 32 (PubMed:17372040). . [BNP(3-32)]: May have a role in cardio-renal homeostasis (PubMed:17372040). Able to promote the production of cGMP (PubMed:17372040). . This is the function of NPPB (natriuretic peptide B, ENSG00000120937).