1tgo
From Proteopedia
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| - | [[Image:1tgo.jpg|left|200px]] | + | [[Image:1tgo.jpg|left|200px]] |
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| - | '''THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS''' | + | {{Structure |
| + | |PDB= 1tgo |SIZE=350|CAPTION= <scene name='initialview01'>1tgo</scene>, resolution 2.5Å | ||
| + | |SITE= | ||
| + | |LIGAND= | ||
| + | |ACTIVITY= [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] | ||
| + | |GENE= | ||
| + | }} | ||
| + | |||
| + | '''THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS''' | ||
| + | |||
==Overview== | ==Overview== | ||
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==About this Structure== | ==About this Structure== | ||
| - | 1TGO is a [ | + | 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== | ==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:// | + | 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: DNA-directed DNA polymerase]] | ||
[[Category: Single protein]] | [[Category: Single protein]] | ||
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[[Category: Huber, R.]] | [[Category: Huber, R.]] | ||
[[Category: Laue, F.]] | [[Category: Laue, F.]] | ||
| - | [[Category: disulfide | + | [[Category: disulfide bond]] |
[[Category: dna polymerase]] | [[Category: dna polymerase]] | ||
[[Category: replication]] | [[Category: replication]] | ||
| - | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu | + | ''Page seeded by [http://oca.weizmann.ac.il/oca OCA ] on Thu Mar 20 14:18:07 2008'' |
Revision as of 12:18, 20 March 2008
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| , resolution 2.5Å | |||||||
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| Activity: | DNA-directed DNA polymerase, with EC number 2.7.7.7 | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
THERMOSTABLE B TYPE DNA POLYMERASE FROM THERMOCOCCUS GORGONARIUS
Overview
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.
About this Structure
1TGO is a Single protein structure of sequence from Thermococcus gorgonarius. Full crystallographic information is available from 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:10097083
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