FEATURES

DESCRIPTION

Also known as XRCC1_HUMAN, XRCC1. Scaffold protein involved in DNA single-strand break repair by mediating the assembly of DNA break repair protein complexes (PubMed:11163244, PubMed:28002403). Negatively regulates ADP-ribosyltransferase activity of PARP1 during base-excision repair in order to prevent excessive PARP1 activity (PubMed:34102106, PubMed:34811483, PubMed:28002403). Recognizes and binds poly-ADP-ribose chains: specifically binds auto-poly-ADP-ribosylated PARP1, limiting its activity (PubMed:14500814, PubMed:34102106, PubMed:34811483). Homodimer (PubMed:16397295). Interacts with polynucleotide kinase (PNK), DNA polymerase-beta (POLB) and DNA ligase III (LIG3) (PubMed:19155274). Interacts with APTX and APLF (PubMed:14755728, PubMed:15044383, PubMed:15380105, PubMed:17507382, PubMed:17353262). Interacts with APEX1; the interaction is induced by SIRT1 and increases with the acetylated form of APEX1 (PubMed:19934257). Interacts with (poly-ADP-ribosylated) PARP1 (PubMed:34811483).

EXTERNAL LINKS

XRCC1

DNA repair protein XRCC1

XRCC1

Molecular Synopsis