3F2B

DNA Polymerase PolC from Geobacillus kaustophilus complex with DNA, dGTP, Mg and Zn


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.39 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.231 

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Ligand Structure Quality Assessment 


This is version 1.2 of the entry. See complete history


Literature

Structure of PolC reveals unique DNA binding and fidelity determinants.

Evans, R.J.Davies, D.R.Bullard, J.M.Christensen, J.Green, L.S.Guiles, J.W.Pata, J.D.Ribble, W.K.Janjic, N.Jarvis, T.C.

(2008) Proc Natl Acad Sci U S A 105: 20695-20700

  • DOI: 10.1073/pnas.0809989106
  • Primary Citation of Related Structures:  
    3F2B, 3F2C, 3F2D

  • PubMed Abstract: 
  • PolC is the polymerase responsible for genome duplication in many Gram-positive bacteria and represents an attractive target for antibacterial development. We have determined the 2.4-A resolution crystal structure of Geobacillus kaustophilus PolC in a ternary complex with DNA and dGTP ...

    PolC is the polymerase responsible for genome duplication in many Gram-positive bacteria and represents an attractive target for antibacterial development. We have determined the 2.4-A resolution crystal structure of Geobacillus kaustophilus PolC in a ternary complex with DNA and dGTP. The structure reveals nascent base pair interactions that lead to highly accurate nucleotide incorporation. A unique beta-strand motif in the PolC thumb domain contacts the minor groove, allowing replication errors to be sensed up to 8 nt upstream of the active site. PolC exhibits the potential for large-scale conformational flexibility, which could encompass the catalytic residues. The structure suggests a mechanism by which the active site can communicate with the rest of the replisome to trigger proofreading after nucleotide misincorporation, leading to an integrated model for controlling the dynamic switch between replicative and repair polymerases. This ternary complex of a cellular replicative polymerase affords insights into polymerase fidelity, evolution, and structural diversity.


    Organizational Affiliation

    Replidyne, Inc., Louisville, CO 80027, USA.



Macromolecules

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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed DNA polymerase III alpha chainA1,041Geobacillus kaustophilusMutation(s): 0 
Gene Names: GK1258polC
EC: 2.7.7.7
UniProt
Find proteins for Q5L0J3 (Geobacillus kaustophilus (strain HTA426))
Explore Q5L0J3 
Go to UniProtKB:  Q5L0J3
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ5L0J3
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsLengthOrganismImage
5'-D(*DCP*DAP*DGP*DTP*DGP*DAP*DGP*DAP*DCP*DGP*DGP*DGP*DCP*DAP*DAP*DCP*DC)-3'B [auth P]17N/A
Protein Feature View
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  • Reference Sequence

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Entity ID: 3
MoleculeChainsLengthOrganismImage
5'-D(*DAP*DTP*DAP*DAP*DCP*DGP*DGP*DTP*DTP*DGP*DCP*DCP*DCP*DGP*DTP*DCP*DTP*DCP*DAP*DCP*DTP*DG)-3'C [auth T]22N/A
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.39 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.228 
  • R-Value Observed: 0.231 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 116.174α = 90
b = 140.793β = 90
c = 184.524γ = 90
Software Package:
Software NamePurpose
HKL-2000data collection
MOLREPphasing
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2009-01-20
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Advisory, Refinement description, Version format compliance
  • Version 1.2: 2017-07-26
    Changes: Refinement description, Source and taxonomy