poly adp-ribose polymerase 1 parp-1 dna damage detection protein. target of cancer drug development. 3d rendering, atoms are.

acid adp amino apoptosis atoms break cancer caspase cell death disease dna health inhibitor lifespan longevity model molecular molecule nick olaparib par parp parp1 peptide podb4dqy poly polymer polymerase polypeptide programmed protein rendering repair ribose ribosyltransferase rucaparib science scientific single ssb strand structure talazoparib tumor veliparib