title: RNF8-dependent histone ubiquitination during DNA damage response and spermatogenesis.
abstract: Histone ubiquitination regulates the chromatin structure that is important for many biological processes. Recently, ubiquitination of histones was observed during the DNA damage response (DDR), and this modification is controlled by really interesting new gene (RING) domain E3 ligase, RNF8. Together with the E2 conjugating enzyme UBC13, RNF8 catalyzes ubiquitination of the histones H2A and H2AX during the DDR, thus facilitating downstream recruitment of DDR factors, such as p53 binding protein 1 (53BP1) and breast cancer type 1 susceptibility protein (BRCA1), to the damage site. Accordingly, the RNF8 knockout mice display phenotypes associated with failed DDR, including hypersensitivity to ionizing radiation, V(D)J recombination deficiency, and a predisposition to cancer. In addition to the DDR phenotypes, RNF8 knockout mice fail to generate mature sperm during spermatogenesis, resulting in male sterility. The RNF8 knockout mice also have a drastic reduction in histone ubiquitination in the testes. These findings indicate that the role of histone ubiquitination during chromatin remodeling in two different biological events could be linked by an RNF8-dependent mechanism. Here, we review the molecular mechanism of RNF8-dependent histone ubiquitination both in DDR and spermatogenesis.
authors: Division of Molecular Medicine and Genetics, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor 48109, USA.
authors: Teng
authors: T
authors: Ma
authors: Jennifer A
authors: JA
authors: Keller
authors: Xiaochun
authors: X
authors: Yu
mesh_terms: D004249:DNA Damage; D004268:DNA-Binding Proteins / Q000378:metabolism*; D006657:Histones / Q000378:metabolism*; D006801:Humans; D008297:Male; D013091:Spermatogenesis; D044767:Ubiquitin-Protein Ligases; D054875:Ubiquitination
chemical_list: D004268:DNA-Binding Proteins; D006657:Histones; C486521:RNF8 protein, human; D044767:Ubiquitin-Protein Ligases