rp2x1

Aurintricarboxylic acid (NSC-4056) is a strong inhibitor of topoisomerases and other nucleases. It is a potent inhibitor of ribonuclease and topoisomerase II by preventing the binding of the nucleic acid to the enzyme.

NF449 is a potent antagonist of the P2X1 receptor, displaying IC50 values of 0.28 nM, 0.69 nM, and 120 nM for rP2X1, rP2X1+5, and P2X2+3, respectively. It acts selectively against Gsα G proteins (G Protein). NF449 inhibits the binding rate of GTP[γS] to Gsα-s, suppresses the stimulation of adenylate cyclase activity, and blocks the coupling of β-adrenergic receptors with Gs.