6d0r: Difference between revisions
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<StructureSection load='6d0r' size='340' side='right'caption='[[6d0r]], [[Resolution|resolution]] 2.86Å' scene=''> | <StructureSection load='6d0r' size='340' side='right'caption='[[6d0r]], [[Resolution|resolution]] 2.86Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[6d0r]] is a 1 chain structure with sequence from [ | <table><tr><td colspan='2'>[[6d0r]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Saccharomyces_cerevisiae_S288C Saccharomyces cerevisiae S288C]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=6D0R OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6D0R FirstGlance]. <br> | ||
</td></tr><tr id=' | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.8585696Å</td></tr> | ||
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6d0r FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6d0r OCA], [https://pdbe.org/6d0r PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6d0r RCSB], [https://www.ebi.ac.uk/pdbsum/6d0r PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6d0r ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == Function == | ||
[ | [https://www.uniprot.org/uniprot/PCNA_YEAST PCNA_YEAST] This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Involved in DNA repair.<ref>PMID:11545742</ref> <ref>PMID:12226657</ref> | ||
<div style="background-color:#fffaf0;"> | <div style="background-color:#fffaf0;"> | ||
== Publication Abstract from PubMed == | == Publication Abstract from PubMed == | ||
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</div> | </div> | ||
<div class="pdbe-citations 6d0r" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 6d0r" style="background-color:#fffaf0;"></div> | ||
==See Also== | |||
*[[Proliferating cell nuclear antigen 3D structures|Proliferating cell nuclear antigen 3D structures]] | |||
== References == | == References == | ||
<references/> | <references/> | ||
__TOC__ | __TOC__ | ||
</StructureSection> | </StructureSection> | ||
[[Category: Large Structures]] | [[Category: Large Structures]] | ||
[[Category: | [[Category: Saccharomyces cerevisiae S288C]] | ||
[[Category: | [[Category: Gaubitz C]] | ||
[[Category: | [[Category: Kelch BA]] | ||
Latest revision as of 18:15, 4 October 2023
Structure of a DNA retention-prone PCNA variantStructure of a DNA retention-prone PCNA variant
Structural highlights
FunctionPCNA_YEAST This protein is an auxiliary protein of DNA polymerase delta and is involved in the control of eukaryotic DNA replication by increasing the polymerase's processibility during elongation of the leading strand. Involved in DNA repair.[1] [2] Publication Abstract from PubMedProliferating cell nuclear antigen (PCNA) is a sliding clamp that acts as a central co-ordinator for mismatch repair (MMR) as well as DNA replication. Loss of Elg1, the major subunit of the PCNA unloader complex, causes over-accumulation of PCNA on DNA and also increases mutation rate, but it has been unclear if the two effects are linked. Here we show that timely removal of PCNA from DNA by the Elg1 complex is important to prevent mutations. Although premature unloading of PCNA generally increases mutation rate, the mutator phenotype of elg1Delta is attenuated by PCNA mutants PCNA-R14E and PCNA-D150E that spontaneously fall off DNA. In contrast, the elg1Delta mutator phenotype is exacerbated by PCNA mutants that accumulate on DNA due to enhanced electrostatic PCNA-DNA interactions. Epistasis analysis suggests that PCNA over-accumulation on DNA interferes with both MMR and MMR-independent process(es). In elg1Delta, over-retained PCNA hyper-recruits the Msh2-Msh6 mismatch recognition complex through its PCNA-interacting peptide motif, causing accumulation of MMR intermediates. Our results suggest that PCNA retention controlled by the Elg1 complex is critical for efficient MMR: PCNA needs to be on DNA long enough to enable MMR, but if it is retained too long it interferes with downstream repair steps. Effective mismatch repair depends on timely control of PCNA retention on DNA by the Elg1 complex.,Paul Solomon Devakumar LJ, Gaubitz C, Lundblad V, Kelch BA, Kubota T Nucleic Acids Res. 2019 May 22. pii: 5494760. doi: 10.1093/nar/gkz441. PMID:31114918[3] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See AlsoReferences
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