Preparing your results

Our searching services are busy right now. Your search will reload in five seconds.

X
Forgot Password

If you have forgotten your password you can enter your email here and get a temporary password sent to your email.

Histone ubiquitination associates with BRCA1-dependent DNA damage response.

http://www.ncbi.nlm.nih.gov/pubmed/19015238

Histone ubiquitination participates in multiple cellular processes, including the DNA damage response. However, the molecular mechanisms involved are not clear. Here, we have identified that RAP80/UIMC1 (ubiquitin interaction motif containing 1), a functional partner of BRCA1, recognizes ubiquitinated histones H2A and H2B. The interaction between RAP80 and ubiquitinated histones H2A and H2B is increased following DNA damage. Since RAP80 facilitates BRCA1's translocation to DNA damage sites, our results indicate that ubiquitinated histones H2A and H2B could be upstream partners of the BRCA1/RAP80 complex in the DNA damage response. Moreover, we have found that RNF8 (ring finger protein 8), an E3 ubiquitin ligase, regulates ubiquitination of both histones H2A and H2B. In RNF8-deficient mouse embryo fibroblasts, ubiquitination of both histones H2A and H2B is dramatically reduced, which abolishes the DNA damage-induced BRCA1 and RAP80 accumulation at damage lesions on the chromatin. Taken together, our results suggest that ubiquitinated histones H2A and H2B may recruit the BRCA1 complex to DNA damage lesions on the chromatin.

Pubmed ID: 19015238 RIS Download

Mesh terms: Amino Acid Motifs | Amino Acid Sequence | Animals | BRCA1 Protein | Carrier Proteins | Chromatin | DNA Damage | HeLa Cells | Histones | Humans | K562 Cells | Mice | Molecular Sequence Data | Nuclear Proteins | Protein Binding | Ubiquitin | Ubiquitination

Research resources used in this publication

None found

Research tools detected in this publication

None found

Data used in this publication

None found

Associated grants

  • Agency: NCI NIH HHS, Id: BC050367
  • Agency: NCI NIH HHS, Id: CA100109
  • Agency: NCI NIH HHS, Id: CA132755
  • Agency: NCI NIH HHS, Id: CA89239
  • Agency: NCI NIH HHS, Id: CA92312
  • Agency: NCI NIH HHS, Id: P50 CA116201
  • Agency: NCI NIH HHS, Id: P50 CA116201
  • Agency: NCI NIH HHS, Id: R01 CA089239
  • Agency: NCI NIH HHS, Id: R01 CA089239-09
  • Agency: NCI NIH HHS, Id: R01 CA092312
  • Agency: NCI NIH HHS, Id: R01 CA092312-09
  • Agency: NCI NIH HHS, Id: R01 CA130899
  • Agency: NCI NIH HHS, Id: R01 CA130899-01A2
  • Agency: NCI NIH HHS, Id: R01 CA132755
  • Agency: NCI NIH HHS, Id: R01 CA132755-03

Publication data is provided by the National Library of Medicine ® and PubMed ®. Data is retrieved from PubMed ® on a weekly schedule. For terms and conditions see the National Library of Medicine Terms and Conditions.