Abstract
Poly(ADP-polymerase)1 (PARP1, the major isoform of a family of poly(ADP-ribosyl)ating enzymes), a constitutive nuclear and mitochondrial enzyme, is a key regulator of DNA repair, cell death and gene expression. In addition to regulating nuclear DNA repair and maintaining genomic integrity, PARP1 functions include: a) regulation of DNA repair, b) regulation of gene transcription, and c) ca…