3s9h: Difference between revisions
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==RB69 DNA Polymerase Triple Mutant(L561A/S565G/Y567A) ternary complex with dUpNpp and a dideoxy-terminated primer in the presence of Ca2+== | ==RB69 DNA Polymerase Triple Mutant(L561A/S565G/Y567A) ternary complex with dUpNpp and a dideoxy-terminated primer in the presence of Ca2+== | ||
<StructureSection load='3s9h' size='340' side='right' caption='[[3s9h]], [[Resolution|resolution]] 1.95Å' scene=''> | <StructureSection load='3s9h' size='340' side='right'caption='[[3s9h]], [[Resolution|resolution]] 1.95Å' scene=''> | ||
== Structural highlights == | == Structural highlights == | ||
<table><tr><td colspan='2'>[[3s9h]] is a 3 chain structure with sequence from [ | <table><tr><td colspan='2'>[[3s9h]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Bpr69 Bpr69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3S9H OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3S9H FirstGlance]. <br> | ||
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=CA:CALCIUM+ION'>CA</scene>, <scene name='pdbligand=DUP:2-DEOXYURIDINE+5-ALPHA,BETA-IMIDO-TRIPHOSPHATE'>DUP</scene></td></tr> | </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=DUP:2-DEOXYURIDINE+5-ALPHA,BETA-IMIDO-TRIPHOSPHATE'>DUP</scene></td></tr> | ||
<tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=DOC:2,3-DIDEOXYCYTIDINE-5-MONOPHOSPHATE'>DOC</scene></td></tr> | <tr id='NonStdRes'><td class="sblockLbl"><b>[[Non-Standard_Residue|NonStd Res:]]</b></td><td class="sblockDat"><scene name='pdbligand=DOC:2,3-DIDEOXYCYTIDINE-5-MONOPHOSPHATE'>DOC</scene></td></tr> | ||
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3nci|3nci]], [[3cfo|3cfo]], [[3cfp|3cfp]], [[3cfr|3cfr]], [[3scx|3scx]], [[3si6|3si6]], [[3sjj|3sjj]], [[3snn|3snn]]</td></tr> | <tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat"><div style='overflow: auto; max-height: 3em;'>[[3nci|3nci]], [[3cfo|3cfo]], [[3cfp|3cfp]], [[3cfr|3cfr]], [[3scx|3scx]], [[3si6|3si6]], [[3sjj|3sjj]], [[3snn|3snn]]</div></td></tr> | ||
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">43, gp43 ([ | <tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">43, gp43 ([https://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=12353 BPR69])</td></tr> | ||
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[ | <tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[https://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [https://www.brenda-enzymes.info/php/result_flat.php4?ecno=2.7.7.7 2.7.7.7] </span></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=3s9h FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3s9h OCA], [https://pdbe.org/3s9h PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3s9h RCSB], [https://www.ebi.ac.uk/pdbsum/3s9h PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3s9h ProSAT]</span></td></tr> | ||
</table> | </table> | ||
== Function == | == 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. | ||
<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 3s9h" style="background-color:#fffaf0;"></div> | <div class="pdbe-citations 3s9h" style="background-color:#fffaf0;"></div> | ||
== References == | == References == | ||
<references/> | <references/> | ||
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[[Category: Bpr69]] | [[Category: Bpr69]] | ||
[[Category: DNA-directed DNA polymerase]] | [[Category: DNA-directed DNA polymerase]] | ||
[[Category: Large Structures]] | |||
[[Category: Konigsberg, W H]] | [[Category: Konigsberg, W H]] | ||
[[Category: Wang, J]] | [[Category: Wang, J]] | ||
Revision as of 10:47, 29 June 2022
RB69 DNA Polymerase Triple Mutant(L561A/S565G/Y567A) ternary complex with dUpNpp and a dideoxy-terminated primer in the presence of Ca2+RB69 DNA Polymerase Triple Mutant(L561A/S565G/Y567A) ternary complex with dUpNpp and a dideoxy-terminated primer in the presence of Ca2+
Structural highlights
Function[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. Publication Abstract from PubMedWe have captured a preinsertion ternary complex of RB69 DNA polymerase (RB69pol) containing the 3' hydroxyl group at the terminus of an extendable primer (ptO3') and a nonhydrolyzable 2'-deoxyuridine 5'-alpha,beta-substituted triphosphate, dUpXpp, where X is either NH or CH(2), opposite a complementary templating dA nucleotide residue. Here we report four structures of these complexes formed by three different RB69pol variants with catalytically inert Ca(2+) and four other structures with catalytically competent Mn(2+) or Mg(2+). These structures provide new insights into why the complete divalent metal-ion coordination complexes at the A and B sites are required for nucleotidyl transfer. They show that the metal ion in the A site brings ptO3' close to the alpha-phosphorus atom (Palpha) of the incoming dNTP to enable phosphodiester bond formation through simultaneous coordination of both ptO3' and the nonbridging Sp oxygen of the dNTP's alpha-phosphate. The coordination bond length of metal ion A as well as its ionic radius determines how close ptO3' can approach Palpha. These variables are expected to affect the rate of bond formation. The metal ion in the B site brings the pyrophosphate product close enough to Palpha to enable pyrophosphorolysis and assist in the departure of the pyrophosphate. In these dUpXpp-containing complexes, ptO3' occupies the vertex of a distorted metal ion A coordination octahedron. When ptO3' is placed at the vertex of an undistorted, idealized metal ion A octahedron, it is within bond formation distance to Palpha. This geometric relationship appears to be conserved among DNA polymerases of known structure. Structural Insights into Complete Metal Ion Coordination from Ternary Complexes of B Family RB69 DNA Polymerase.,Xia S, Wang M, Blaha G, Konigsberg WH, Wang J Biochemistry. 2011 Oct 25;50(42):9114-24. Epub 2011 Sep 29. PMID:21923197[1] From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. References
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