1tgo: Difference between revisions

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[[Image:1tgo.png|left|200px]]


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==THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS==
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<StructureSection load='1tgo' size='340' side='right'caption='[[1tgo]], [[Resolution|resolution]] 2.50&Aring;' scene=''>
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== Structural highlights ==
or the SCENE parameter (which sets the initial scene displayed when the page is loaded),
<table><tr><td colspan='2'>[[1tgo]] is a 1 chain structure with sequence from [https://en.wikipedia.org/wiki/Thermococcus_gorgonarius Thermococcus gorgonarius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TGO OCA]. For a <b>guided tour on the structure components</b> use [https://proteopedia.org/fgij/fg.htm?mol=1TGO FirstGlance]. <br>
or leave the SCENE parameter empty for the default display.
</td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5&#8491;</td></tr>
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<tr id='resources'><td class="sblockLbl"><b>Resources:</b></td><td class="sblockDat"><span class='plainlinks'>[https://proteopedia.org/fgij/fg.htm?mol=1tgo FirstGlance], [http://oca.weizmann.ac.il/oca-bin/ocaids?id=1tgo OCA], [https://pdbe.org/1tgo PDBe], [https://www.rcsb.org/pdb/explore.do?structureId=1tgo RCSB], [https://www.ebi.ac.uk/pdbsum/1tgo PDBsum], [https://prosat.h-its.org/prosat/prosatexe?pdbcode=1tgo ProSAT]</span></td></tr>
{{STRUCTURE_1tgo|  PDB=1tgo  |  SCENE=  }}
</table>
== Function ==
[https://www.uniprot.org/uniprot/DPOL_THEGO DPOL_THEGO] In addition to polymerase activity, this DNA polymerase exhibits 3' to 5' exonuclease activity.
== 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/tg/1tgo_consurf.spt"</scriptWhenChecked>
    <scriptWhenUnchecked>script /wiki/extensions/Proteopedia/spt/initialview03.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=1tgo ConSurf].
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== Publication Abstract from PubMed ==
Most known archaeal DNA polymerases belong to the type B family, which also includes the DNA replication polymerases of eukaryotes, but maintain high fidelity at extreme conditions. We describe here the 2.5 A resolution crystal structure of a DNA polymerase from the Archaea Thermococcus gorgonarius and identify structural features of the fold and the active site that are likely responsible for its thermostable function. Comparison with the mesophilic B type DNA polymerase gp43 of the bacteriophage RB69 highlights thermophilic adaptations, which include the presence of two disulfide bonds and an enhanced electrostatic complementarity at the DNA-protein interface. In contrast to gp43, several loops in the exonuclease and thumb domains are more closely packed; this apparently blocks primer binding to the exonuclease active site. A physiological role of this "closed" conformation is unknown but may represent a polymerase mode, in contrast to an editing mode with an open exonuclease site. This archaeal B DNA polymerase structure provides a starting point for structure-based design of polymerases or ligands with applications in biotechnology and the development of antiviral or anticancer agents.


===THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS===
Crystal structure of a thermostable type B DNA polymerase from Thermococcus gorgonarius.,Hopfner KP, Eichinger A, Engh RA, Laue F, Ankenbauer W, Huber R, Angerer B Proc Natl Acad Sci U S A. 1999 Mar 30;96(7):3600-5. PMID:10097083<ref>PMID:10097083</ref>


From MEDLINE&reg;/PubMed&reg;, a database of the U.S. National Library of Medicine.<br>
</div>
<div class="pdbe-citations 1tgo" style="background-color:#fffaf0;"></div>


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==See Also==
The line below this paragraph, {{ABSTRACT_PUBMED_10097083}}, adds the Publication Abstract to the page
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]]
(as it appears on PubMed at http://www.pubmed.gov), where 10097083 is the PubMed ID number.
== References ==
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<references/>
{{ABSTRACT_PUBMED_10097083}}
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</StructureSection>
==About this Structure==
[[Category: Large Structures]]
1TGO is a [[Single protein]] structure of sequence from [http://en.wikipedia.org/wiki/Thermococcus_gorgonarius Thermococcus gorgonarius]. Full crystallographic information is available from [http://oca.weizmann.ac.il/oca-bin/ocashort?id=1TGO OCA].
 
==Reference==
Crystal structure of a thermostable type B DNA polymerase from Thermococcus gorgonarius., Hopfner KP, Eichinger A, Engh RA, Laue F, Ankenbauer W, Huber R, Angerer B, Proc Natl Acad Sci U S A. 1999 Mar 30;96(7):3600-5. PMID:[http://www.ncbi.nlm.nih.gov/pubmed/10097083 10097083]
[[Category: DNA-directed DNA polymerase]]
[[Category: Single protein]]
[[Category: Thermococcus gorgonarius]]
[[Category: Thermococcus gorgonarius]]
[[Category: Angerer, B.]]
[[Category: Angerer B]]
[[Category: Ankenbauer, W.]]
[[Category: Ankenbauer W]]
[[Category: Eichinger, A.]]
[[Category: Eichinger A]]
[[Category: Engh, R A.]]
[[Category: Engh RA]]
[[Category: Hopfner, K P.]]
[[Category: Hopfner K-P]]
[[Category: Huber, R.]]
[[Category: Huber R]]
[[Category: Laue, F.]]
[[Category: Laue F]]
[[Category: Disulfide bond]]
[[Category: Dna polymerase]]
[[Category: Replication]]
 
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