3spy: Difference between revisions

No edit summary
No edit summary
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:


==RB69 DNA Polymerase(L415A/L561A/S565G/Y567A) Ternary Complex with dUpCpp Opposite dA==
==RB69 DNA Polymerase(L415A/L561A/S565G/Y567A) Ternary Complex with dUpCpp Opposite dA==
<StructureSection load='3spy' size='340' side='right' caption='[[3spy]], [[Resolution|resolution]] 2.14&Aring;' scene=''>
<StructureSection load='3spy' size='340' side='right'caption='[[3spy]], [[Resolution|resolution]] 2.14&Aring;' scene=''>
== Structural highlights ==
== Structural highlights ==
<table><tr><td colspan='2'>[[3spy]] is a 3 chain structure with sequence from [http://en.wikipedia.org/wiki/Bpr69 Bpr69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SPY OCA]. For a <b>guided tour on the structure components</b> use [http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3SPY FirstGlance]. <br>
<table><tr><td colspan='2'>[[3spy]] is a 3 chain structure with sequence from [https://en.wikipedia.org/wiki/Escherichia_phage_RB69 Escherichia phage RB69]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=3SPY OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=3SPY FirstGlance]. <br>
</td></tr><tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=UPC:2-DEOXY-5-O-[(R)-HYDROXY{[(R)-HYDROXY(PHOSPHONOOXY)PHOSPHORYL]METHYL}PHOSPHORYL]URIDINE'>UPC</scene></td></tr>
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.14&#8491;</td></tr>
<tr id='related'><td class="sblockLbl"><b>[[Related_structure|Related:]]</b></td><td class="sblockDat">[[3spz|3spz]], [[3sq0|3sq0]], [[3sq1|3sq1]], [[3sq2|3sq2]], [[3sq4|3sq4]]</td></tr>
<tr id='ligand'><td class="sblockLbl"><b>[[Ligand|Ligands:]]</b></td><td class="sblockDat" id="ligandDat"><scene name='pdbligand=MG:MAGNESIUM+ION'>MG</scene>, <scene name='pdbligand=UPC:2-DEOXY-5-O-[(R)-HYDROXY{[(R)-HYDROXY(PHOSPHONOOXY)PHOSPHORYL]METHYL}PHOSPHORYL]URIDINE'>UPC</scene></td></tr>
<tr id='gene'><td class="sblockLbl"><b>[[Gene|Gene:]]</b></td><td class="sblockDat">43 ([http://www.ncbi.nlm.nih.gov/Taxonomy/Browser/wwwtax.cgi?mode=Info&srchmode=5&id=12353 BPR69])</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=3spy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3spy OCA], [https://pdbe.org/3spy PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=3spy RCSB], [https://www.ebi.ac.uk/pdbsum/3spy PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=3spy ProSAT]</span></td></tr>
<tr id='activity'><td class="sblockLbl"><b>Activity:</b></td><td class="sblockDat"><span class='plainlinks'>[http://en.wikipedia.org/wiki/DNA-directed_DNA_polymerase DNA-directed DNA polymerase], with EC number [http://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'>[http://oca.weizmann.ac.il/oca-docs/fgij/fg.htm?mol=3spy FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=3spy OCA], [http://pdbe.org/3spy PDBe], [http://www.rcsb.org/pdb/explore.do?structureId=3spy RCSB], [http://www.ebi.ac.uk/pdbsum/3spy PDBsum], [http://prosat.h-its.org/prosat/prosatexe?pdbcode=3spy ProSAT]</span></td></tr>
</table>
</table>
== Function ==
== Function ==
[[http://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.  
[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;">
== Publication Abstract from PubMed ==
We 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<ref>PMID:21923197</ref>
 
From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 3spy" style="background-color:#fffaf0;"></div>


==See Also==
==See Also==
*[[DNA polymerase|DNA polymerase]]
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
== References ==
<references/>
__TOC__
__TOC__
</StructureSection>
</StructureSection>
[[Category: Bpr69]]
[[Category: Escherichia phage RB69]]
[[Category: DNA-directed DNA polymerase]]
[[Category: Large Structures]]
[[Category: Konigsberg, W H]]
[[Category: Konigsberg WH]]
[[Category: Wang, J]]
[[Category: Wang J]]
[[Category: Xia, S]]
[[Category: Xia S]]
[[Category: Dupcpp]]
[[Category: Quadruple mutant]]
[[Category: Transferase-dna complex]]

Proteopedia Page Contributors and Editors (what is this?)Proteopedia Page Contributors and Editors (what is this?)

OCA