View source for 6cx3


==S179T Mutant of Yeast PCNA==
<StructureSection load='6cx3' size='340' side='right'caption='[[6cx3]], [[Resolution|resolution]] 3.10&Aring;' scene=''>
== Structural highlights ==
<table><tr><td colspan='2'>[[6cx3]] 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=6CX3 OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=6CX3 FirstGlance]. <br>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 3.101&#8491;</td></tr>
<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=6cx3 FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=6cx3 OCA], [https://pdbe.org/6cx3 PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=6cx3 RCSB], [https://www.ebi.ac.uk/pdbsum/6cx3 PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=6cx3 ProSAT]</span></td></tr>
</table>
== 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;">
== Publication Abstract from PubMed ==
Proliferating cell nuclear antigen (PCNA) plays an essential role in DNA replication and repair by interacting with a large number of proteins involved in these processes. Two amino acid substitutions in PCNA, both located at the subunit interface, have previously been shown to block translesion synthesis (TLS), a pathway for bypassing DNA damage during replication. To better understand the role of the subunit interface in TLS, we used random mutagenesis to generate a set of 33 PCNA mutants with substitutions at the subunit interface. We assayed the full set of mutants for viability and sensitivity to ultraviolet (UV) radiation. We then selected a subset of 17 mutants and measured their rates of cell growth, spontaneous mutagenesis, and UV-induced mutagenesis. All except three of these 17 mutants were partially or completely defective in induced mutagenesis, which indicates a partial or complete loss of TLS. These results demonstrate that the integrity of the subunit interface of PCNA is essential for efficient TLS and that even conservative substitutions have the potential to disrupt this process.

Identification of New Mutations at the PCNA Subunit Interface that Block Translesion Synthesis.,Kondratick CM, Boehm EM, Dieckman LM, Powers KT, Sanchez JC, Mueting SR, Washington MT PLoS One. 2016 Jun 3;11(6):e0157023. doi: 10.1371/journal.pone.0157023., eCollection 2016. PMID:27258147<ref>PMID:27258147</ref>

From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 6cx3" style="background-color:#fffaf0;"></div>

==See Also==
*[[Proliferating cell nuclear antigen 3D structures|Proliferating cell nuclear antigen 3D structures]]
== References ==
<references/>
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</StructureSection>
[[Category: Large Structures]]
[[Category: Saccharomyces cerevisiae S288C]]
[[Category: Powers KT]]