Psammaplin A, a marine metabolite, is a potent inhibitor of HDAC and DNA methyltransferases. Psammaplin A ia a highly potent and selective DAC1 inhibitor with an IC50 of 0.9 nM. Psammaplin A possess the antimicrobial effect on the Gram-positive bacteria and inhibits DNA synthesis and DNA gyrase activity. Antitumor Activity[2].IC50 & Target:IC50: 0.9 nM (DAC1)