1clq: Difference between revisions
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New page: left|200px<br /> <applet load="1clq" size="450" color="white" frame="true" align="right" spinBox="true" caption="1clq, resolution 2.70Å" /> '''CRYSTAL STRUCTURE O... |
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== | ==CRYSTAL STRUCTURE OF A REPLICATION FORK DNA POLYMERASE EDITING COMPLEX AT 2.7 A RESOLUTION== | ||
We have solved the crystal structures of the bacteriophage RB69 sliding | <StructureSection load='1clq' size='340' side='right'caption='[[1clq]], [[Resolution|resolution]] 2.70Å' scene=''> | ||
== Structural highlights == | |||
<table><tr><td colspan='2'>[[1clq]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_phage_RB69 Escherichia phage RB69]. The March 2000 RCSB PDB [https://pdb.rcsb.org/pdb/static.do?p=education_discussion/molecule_of_the_month/index.html Molecule of the Month] feature on ''DNA Polymerase'' by David S. Goodsell is [https://dx.doi.org/10.2210/rcsb_pdb/mom_2000_3 10.2210/rcsb_pdb/mom_2000_3]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1CLQ OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1CLQ 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]] 2.7Å</td></tr> | |||
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=GDP:GUANOSINE-5-DIPHOSPHATE'>GDP</scene></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=1clq FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1clq OCA], [https://pdbe.org/1clq PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1clq RCSB], [https://www.ebi.ac.uk/pdbsum/1clq PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1clq ProSAT]</span></td></tr> | |||
</table> | |||
== Function == | |||
[https://www.uniprot.org/uniprot/DPOL_BPR69 DPOL_BPR69] This polymerase possesses two enzymatic activities: DNA synthesis (polymerase) and an exonucleolytic activity that degrades single stranded DNA in the 3'- to 5'-direction. | |||
== Evolutionary Conservation == | |||
[[Image:Consurf_key_small.gif|200px|right]] | |||
Check<jmol> | |||
<jmolCheckbox> | |||
<scriptWhenChecked>; select protein; define ~consurf_to_do selected; consurf_initial_scene = true; script "/wiki/ConSurf/cl/1clq_consurf.spt"</scriptWhenChecked> | |||
<scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview01.spt</scriptWhenUnchecked> | |||
<text>to colour the structure by Evolutionary Conservation</text> | |||
</jmolCheckbox> | |||
</jmol>, as determined by [http://consurfdb.tau.ac.il/ ConSurfDB]. You may read the [[Conservation%2C_Evolutionary|explanation]] of the method and the full data available from [http://bental.tau.ac.il/new_ConSurfDB/main_output.php?pdb_ID=1clq ConSurf]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== Publication Abstract from PubMed == | |||
We have solved the crystal structures of the bacteriophage RB69 sliding clamp, its complex with a peptide essential for DNA polymerase interactions, and the DNA polymerase complexed with primer-template DNA. The editing complex structure shows a partially melted duplex DNA exiting from the exonuclease domain at an unexpected angle and significant changes in the protein structure. The clamp complex shows the C-terminal 11 residues of polymerase bound in a hydrophobic pocket, and it allows docking of the editing and clamp structures together. The peptide binds to the sliding clamp at a position identical to that of a replication inhibitor peptide bound to PCNA, suggesting that the replication inhibitor protein p21CIP1 functions by competing with eukaryotic polymerases for the same binding pocket on the clamp. | |||
Building a replisome from interacting pieces: sliding clamp complexed to a peptide from DNA polymerase and a polymerase editing complex.,Shamoo Y, Steitz TA Cell. 1999 Oct 15;99(2):155-66. PMID:10535734<ref>PMID:10535734</ref> | |||
== | From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.<br> | ||
</div> | |||
<div class="pdbe-citations 1clq" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
[[Category: DNA Polymerase]] | [[Category: DNA Polymerase]] | ||
[[Category: | [[Category: Escherichia phage RB69]] | ||
[[Category: | [[Category: Large Structures]] | ||
[[Category: | [[Category: RCSB PDB Molecule of the Month]] | ||
[[Category: Shamoo | [[Category: Shamoo Y]] | ||
[[Category: Steitz | [[Category: Steitz TA]] | ||
Latest revision as of 11:04, 2 August 2023
CRYSTAL STRUCTURE OF A REPLICATION FORK DNA POLYMERASE EDITING COMPLEX AT 2.7 A RESOLUTION
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