5h1c
From Proteopedia
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== Function == | == Function == | ||
[[http://www.uniprot.org/uniprot/RAD51_HUMAN RAD51_HUMAN]] Participates in a common DNA damage response pathway associated with the activation of homologous recombination and double-strand break repair. Binds to single and double stranded DNA and exhibits DNA-dependent ATPase activity. Underwinds duplex DNA and forms helical nucleoprotein filaments. Plays a role in regulating mitochondrial DNA copy number under conditions of oxidative stress in the presence of RAD51C and XRCC3.<ref>PMID:18417535</ref> <ref>PMID:12205100</ref> <ref>PMID:20413593</ref> | [[http://www.uniprot.org/uniprot/RAD51_HUMAN RAD51_HUMAN]] Participates in a common DNA damage response pathway associated with the activation of homologous recombination and double-strand break repair. Binds to single and double stranded DNA and exhibits DNA-dependent ATPase activity. Underwinds duplex DNA and forms helical nucleoprotein filaments. Plays a role in regulating mitochondrial DNA copy number under conditions of oxidative stress in the presence of RAD51C and XRCC3.<ref>PMID:18417535</ref> <ref>PMID:12205100</ref> <ref>PMID:20413593</ref> | ||
| + | <div style="background-color:#fffaf0;"> | ||
| + | == Publication Abstract from PubMed == | ||
| + | The central step in eukaryotic homologous recombination (HR) is ATP-dependent DNA-strand exchange mediated by the Rad51 recombinase. In this process, Rad51 assembles on single-stranded DNA (ssDNA) and generates a helical filament that is able to search for and invade homologous double-stranded DNA (dsDNA), thus leading to strand separation and formation of new base pairs between the initiating ssDNA and the complementary strand within the duplex. Here, we used cryo-EM to solve the structures of human RAD51 in complex with DNA molecules, in presynaptic and postsynaptic states, at near-atomic resolution. Our structures reveal both conserved and distinct structural features of the human RAD51-DNA complexes compared with their prokaryotic counterpart. Notably, we also captured the structure of an arrested synaptic complex. Our results provide new insight into the molecular mechanisms of the DNA homology search and strand-exchange processes. | ||
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| + | Cryo-EM structures of human RAD51 recombinase filaments during catalysis of DNA-strand exchange.,Xu J, Zhao L, Xu Y, Zhao W, Sung P, Wang HW Nat Struct Mol Biol. 2017 Jan;24(1):40-46. doi: 10.1038/nsmb.3336. Epub 2016 Dec , 12. PMID:27941862<ref>PMID:27941862</ref> | ||
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| + | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
| + | </div> | ||
| + | <div class="pdbe-citations 5h1c" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
Revision as of 16:17, 25 January 2017
Human RAD51 post-synaptic complexes
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