ERCC6 : ERCC excision repair 6, chromatin remodeling factor

Description

The ERCC6 (ERCC excision repair 6, chromatin remodeling factor) is a protein-coding gene located on chromosome 10.

The ERCC6 gene provides instructions for making a protein called Cockayne syndrome B (CSB). This protein is involved in repairing damaged DNA and appears to assist with gene transcription, which is the first step in protein production.DNA can be damaged by ultraviolet (UV) rays from the sun and by toxic chemicals, radiation, and unstable molecules called free radicals. If left uncorrected, DNA damage accumulates, which causes cells to malfunction and can lead to cell death. Although DNA damage occurs frequently, cells are usually able to fix it before it can cause problems. Cells have several mechanisms to correct DNA damage; one such mechanism involves the CSB protein. This protein specializes in repairing damaged DNA within active genes (those genes undergoing gene transcription). When DNA in active genes is damaged, the enzyme that carries out gene transcription (RNA polymerase) gets stuck, and the process stalls. Researchers think that the CSB protein helps remove RNA polymerase from the damaged site, so the DNA can be repaired. The CSB protein may also assist in restarting gene transcription after the damage is corrected.

Essential factor involved in transcription-coupled nucleotide excision repair which allows RNA polymerase II-blocking lesions to be rapidly removed from the transcribed strand of active genes (PubMed:20541997, PubMed:26620705, PubMed:16246722). Upon DNA-binding, it locally modifies DNA conformation by wrapping the DNA around itself, thereby modifying the interface between stalled RNA polymerase II and DNA (PubMed:15548521). It is required for transcription-coupled repair complex formation (PubMed:16916636). It recruits the CSA complex (DCX(ERCC8) complex), nucleotide excision repair proteins and EP300 to the sites of RNA polymerase II-blocking lesions (PubMed:16916636). Plays an important role in regulating the choice of the DNA double- strand breaks (DSBs) repair pathway and G2/M checkpoint activation; DNA-dependent ATPase activity is essential for this function (PubMed:25820262). Regulates the DNA repair pathway choice by inhibiting non-homologous end joining (NHEJ), thereby promoting the homologous recombination (HR)-mediated repair of DSBs during the S/G2 phases of the cell cycle (PubMed:25820262). Mediates the activation of the ATM- and CHEK2-dependent DNA damage responses thus preventing premature entry of cells into mitosis following the induction of DNA DSBs (PubMed:25820262). Acts as a chromatin remodeler at DSBs; DNA- dependent ATPase-dependent activity is essential for this function. Remodels chromatin by evicting histones from chromatin flanking DSBs, limiting RIF1 accumulation at DSBs thereby promoting BRCA1-mediated HR (PubMed:29203878). Required for stable recruitment of ELOA and CUL5 to DNA damage sites (PubMed:28292928). Involved in UV-induced translocation of ERCC8 to the nuclear matrix (PubMed:26620705). Essential for neuronal differentiation and neuritogenesis; regulates transcription and chromatin remodeling activities required during neurogenesis (PubMed:24874740). {ECO:0000269|PubMed:15548521, ECO:0000269|PubMed:16246722, ECO:0000269|PubMed:16916636, ECO:0000269|PubMed:20541997, ECO:0000269|PubMed:22483866, ECO:0000269|PubMed:24874740, ECO:0000269|PubMed:25820262, ECO:0000269|PubMed:26620705, ECO:0000269|PubMed:28292928, ECO:0000269|PubMed:29203878}

ERCC6 is also known as ARMD5, CKN2, COFS, COFS1, CSB, CSB-PGBD3, POF11, RAD26, UVSS1.

Associated Diseases

• Lung cancer, susceptibility to
• Cockayne syndrome, type B
• De Sanctis-Cacchione syndrome
• COFS syndrome
• Cockayne syndrome type 1
• Cockayne syndrome type 2
• Cockayne syndrome type 3
• UV-sensitive syndrome 1
• Cerebrooculofacioskeletal syndrome 1
• Premature ovarian failure 11
• Cockayne syndrome
• Age-related macular degeneration
• UV-sensitive syndrome