1tgo: Difference between revisions
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< | ==THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS== | ||
<StructureSection load='1tgo' size='340' side='right'caption='[[1tgo]], [[Resolution|resolution]] 2.50Å' scene=''> | |||
You may | == Structural highlights == | ||
<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 | </td></tr><tr id='method'><td class="sblockLbl"><b>[[Empirical_models|Method:]]</b></td><td class="sblockDat" id="methodDat">X-ray diffraction, [[Resolution|Resolution]] 2.5Å</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=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> | |||
</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]. | |||
<div style="clear:both"></div> | |||
<div style="background-color:#fffaf0;"> | |||
== 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. | |||
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®/PubMed®, a database of the U.S. National Library of Medicine.<br> | |||
</div> | |||
<div class="pdbe-citations 1tgo" style="background-color:#fffaf0;"></div> | |||
==See Also== | |||
*[[DNA polymerase 3D structures|DNA polymerase 3D structures]] | |||
== References == | |||
<references/> | |||
__TOC__ | |||
</StructureSection> | |||
== | [[Category: Large Structures]] | ||
== | |||
[[Category: | |||
[[Category: Thermococcus gorgonarius]] | [[Category: Thermococcus gorgonarius]] | ||
[[Category: Angerer | [[Category: Angerer B]] | ||
[[Category: Ankenbauer | [[Category: Ankenbauer W]] | ||
[[Category: Eichinger | [[Category: Eichinger A]] | ||
[[Category: Engh | [[Category: Engh RA]] | ||
[[Category: Hopfner | [[Category: Hopfner K-P]] | ||
[[Category: Huber | [[Category: Huber R]] | ||
[[Category: Laue | [[Category: Laue F]] | ||