1S9F

DPO with AT matched


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.213 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Dpo4 is hindered in extending a G.T mismatch by a reverse wobble

Trincao, J.Johnson, R.E.Wolfle, W.T.Escalante, C.R.Prakash, S.Prakash, L.Aggarwal, A.K.

(2004) Nat Struct Mol Biol 11: 457-462

  • DOI: 10.1038/nsmb755
  • Primary Citation of Related Structures:  
    1S97, 1S9F

  • PubMed Abstract: 
  • The ability or inability of a DNA polymerase to extend a mispair directly affects the establishment of genomic mutations. We report here kinetic analyses of the ability of Dpo4, a Y-family polymerase from Sulfolobus solfataricus, to extend from all mispairs opposite a template G or T ...

    The ability or inability of a DNA polymerase to extend a mispair directly affects the establishment of genomic mutations. We report here kinetic analyses of the ability of Dpo4, a Y-family polymerase from Sulfolobus solfataricus, to extend from all mispairs opposite a template G or T. Dpo4 is equally inefficient at extending these mispairs, which include, surprisingly, a G.T mispair expected to conform closely to Watson-Crick geometry. To elucidate the basis of this, we solved the structure of Dpo4 bound to G.T-mispaired primer template in the presence of an incoming nucleotide. As a control, we also determined the structure of Dpo4 bound to a matched A-T base pair at the primer terminus. The structures offer a basis for the low efficiency of Dpo4 in extending a G.T mispair: a reverse wobble that deflects the primer 3'-OH away from the incoming nucleotide.


    Organizational Affiliation

    Structural Biology Program, Department of Physiology and Biophysics, Mount Sinai School of Medicine, Box 1677, 1425 Madison Avenue, New York, New York 10029, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA polymerase IVI [auth A], J [auth B], K [auth C], L [auth D]352Saccharolobus solfataricusMutation(s): 0 
Gene Names: dbhdpo4SSO2448
EC: 2.7.7.7
Find proteins for Q97W02 (Saccharolobus solfataricus (strain ATCC 35092 / DSM 1617 / JCM 11322 / P2))
Explore Q97W02 
Go to UniProtKB:  Q97W02
Protein Feature View
Expand
  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-D(*GP*GP*GP*GP*GP*AP*AP*GP*GP*AP*CP*TP*A)-3'A [auth E], C [auth F], E [auth G], G [auth H]13N/A
    • Find similar nucleic acids by:  Sequence   |   Structure
    • Entity ID: 2
      MoleculeChainsLengthOrganismImage
      5'-D(*T*TP*CP*AP*GP*TP*AP*GP*TP*CP*CP*TP*TP*CP*CP*CP*CP*C)-3'B [auth I], D [auth J], F [auth K], H [auth L]18N/A
      Experimental Data & Validation

      Experimental Data

      • Method: X-RAY DIFFRACTION
      • Resolution: 2.00 Å
      • R-Value Free: 0.239 
      • R-Value Work: 0.205 
      • R-Value Observed: 0.213 
      • Space Group: P 1 21 1
      Unit Cell:
      Length ( Å )Angle ( ˚ )
      a = 104.8α = 90
      b = 100.3β = 95.2
      c = 110.8γ = 90
      Software Package:
      Software NamePurpose
      CNSrefinement
      HKL-2000data reduction
      SCALEPACKdata scaling
      CNSphasing

      Structure Validation

      View Full Validation Report



      Entry History 

      Deposition Data

      Revision History  (Full details and data files)

      • Version 1.0: 2005-02-15
        Type: Initial release
      • Version 1.1: 2008-04-29
        Changes: Version format compliance
      • Version 1.2: 2011-07-13
        Changes: Non-polymer description, Version format compliance