1T7P

T7 DNA POLYMERASE COMPLEXED TO DNA PRIMER/TEMPLATE,A NUCLEOSIDE TRIPHOSPHATE, AND ITS PROCESSIVITY FACTOR THIOREDOXIN

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.240 

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This is version 1.4 of the entry. See complete history. 


Literature

Crystal structure of a bacteriophage T7 DNA replication complex at 2.2 A resolution.

Doublie, S., Tabor, S., Long, A.M., Richardson, C.C., Ellenberger, T.

(1998) Nature 391: 251-258

  • DOI: https://doi.org/10.1038/34593
  • Primary Citation of Related Structures:  
    1T7P

  • PubMed Abstract: 

    DNA polymerases change their specificity for nucleotide substrates with each catalytic cycle, while achieving error frequencies in the range of 10(-5) to 10(-6). Here we present a 2.2 A crystal structure of the replicative DNA polymerase from bacteriophage T7 complexed with a primer-template and a nucleoside triphosphate in the polymerase active site. The structure illustrates how nucleotides are selected in a template-directed manner, and provides a structural basis for a metal-assisted mechanism of phosphoryl transfer by a large group of related polymerases.

    • Organizational Affiliation: 

    Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115, USA.


Macromolecules

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Entity ID: 3
MoleculeChains Sequence LengthOrganismDetailsImage
DNA-directed DNA polymeraseC [auth A]698Escherichia phage T7Mutation(s): 0 
EC: 2.7.7.7 (PDB Primary Data), 3.1.11 (PDB Primary Data)
UniProt
Find proteins for P00581 (Escherichia phage T7)
Explore P00581 
Go to UniProtKB:  P00581
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00581
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Entity ID: 4
MoleculeChains Sequence LengthOrganismDetailsImage
Thioredoxin 1D [auth B]108Escherichia coli O157:H7Mutation(s): 0 
Gene Names: trxA, Z5291, ECs4714
UniProt
Find proteins for P0AA25 (Escherichia coli (strain K12))
Explore P0AA25 
Go to UniProtKB:  P0AA25
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UniProt GroupP0AA25
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Entity ID: 1
MoleculeChains LengthOrganismImage
DNA (5'-D(P*GP*CP*CP*AP*GP*TP*GP*CP*CP*AP*2DA)-3')A [auth P]11N/A
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Entity ID: 2
MoleculeChains LengthOrganismImage
DNA (5'-D(P*CP*CP*TP*TP*GP*GP*CP*AP*CP*TP*GP*GP*C)-3')B [auth T]13N/A
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.279 
  • R-Value Work: 0.240 
  • R-Value Observed: 0.240 
  • Space Group: P 21 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 106.6α = 90
b = 216.3β = 90
c = 52.1γ = 90
Software Package:
Software NamePurpose
MLPHAREphasing
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-02-25
    Type: Initial release
  • Version 1.1: 2008-05-22
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2018-04-04
    Changes: Data collection, Database references, Source and taxonomy, Structure summary
  • Version 1.4: 2024-02-14
    Changes: Data collection, Database references, Derived calculations