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| Content Provider | Directory of Open Access Journals (DOAJ) |
|---|---|
| Author | Maarten W. Paul Arshdeep Sidhu Yongxin Liang Sarah E. van Rossum-Fikkert Hanny Odijk Alex N. Zelensky Roland Kanaar Claire Wyman |
| Abstract | Breast cancer type two susceptibility protein (BRCA2) is an essential protein in genome maintenance, homologous recombination (HR), and replication fork protection. Its function includes multiple interaction partners and requires timely localization to relevant sites in the nucleus. We investigated the importance of the highly conserved DNA-binding domain (DBD) and C-terminal domain (CTD) of BRCA2. We generated BRCA2 variants missing one or both domains in mouse embryonic stem (ES) cells and defined their contribution in HR function and dynamic localization in the nucleus, by single-particle tracking of BRCA2 mobility. Changes in molecular architecture of BRCA2 induced by binding partners of purified BRCA2 were determined by scanning force microscopy. BRCA2 mobility and DNA-damage-induced increase in the immobile fraction were largely unaffected by C-terminal deletions. The purified proteins missing CTD and/or DBD were defective in architectural changes correlating with reduced HR function in cells. These results emphasize BRCA2 activity at sites of damage beyond promoting RAD51 delivery. |
| e-ISSN | 2050084X |
| DOI | 10.7554/eLife.67926 |
| Journal | eLife |
| Volume Number | 10 |
| Language | English |
| Publisher | eLife Sciences Publications Ltd |
| Publisher Date | 2021-01-01 |
| Publisher Place | United Kingdom |
| Access Restriction | Open |
| Subject Keyword | Medicine Science Biology (general) Dna Repair Homologous Recombination Brca2 Scanning Force Microscopy Single-molecule Microscopy Nuclear Foci |
| Content Type | Text |
| Resource Type | Article |
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