1ARO

T7 RNA POLYMERASE COMPLEXED WITH T7 LYSOZYME

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.262 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history. 


Literature

Structure of T7 RNA polymerase complexed to the transcriptional inhibitor T7 lysozyme.

Jeruzalmi, D., Steitz, T.A.

(1998) EMBO J 17: 4101-4113

  • DOI: 10.1093/emboj/17.14.4101
  • Primary Citation of Related Structures:  
    1ARO

  • PubMed Abstract: 

    • The T7 RNA polymerase-T7 lysozyme complex regulates phage gene expression during infection of Escherichia coli. The 2.8 A crystal structure of the complex reveals that lysozyme binds at a site remote from the polymerase active site, suggesting an indirect mechanism of inhibition ...

    The T7 RNA polymerase-T7 lysozyme complex regulates phage gene expression during infection of Escherichia coli. The 2.8 A crystal structure of the complex reveals that lysozyme binds at a site remote from the polymerase active site, suggesting an indirect mechanism of inhibition. Comparison of the T7 RNA polymerase structure with that of the homologous pol I family of DNA polymerases reveals identities in the catalytic site but also differences specific to RNA polymerase function. The structure of T7 RNA polymerase presented here differs significantly from a previously published structure. Sequence similarities between phage RNA polymerases and those from mitochondria and chloroplasts, when interpreted in the context of our revised model of T7 RNA polymerase, suggest a conserved fold.

    Organizational Affiliation: 

    Department of Molecular Biophysics and Biochemistry, Yale University, 266 Whitney Avenue, New Haven, CT 06520-8114, USA.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
T7 RNA POLYMERASEA [auth P]883Escherichia phage T7Mutation(s): 2 
Gene Names: T7, 1
EC: 2.7.7.6
UniProt
Find proteins for P00573 (Escherichia phage T7)
Explore P00573 
Go to UniProtKB:  P00573
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00573
Protein Feature View
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  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
T7 LYSOZYMEB [auth L]151Escherichia phage T7Mutation(s): 0 
Gene Names: T7, 3.5
EC: 3.5.1.28
UniProt
Find proteins for P00806 (Escherichia phage T7)
Explore P00806 
Go to UniProtKB:  P00806
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP00806
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.80 Å
  • R-Value Free: 0.309 
  • R-Value Work: 0.262 
  • R-Value Observed: 0.262 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 273.385α = 90
b = 95.612β = 101.4
c = 63.582γ = 90
Software Package:
Software NamePurpose
CNSrefinement
DEMON-ANGELmodel building
X-PLORmodel building
X-PLORrefinement
DENZOdata reduction
SCALEPACKdata scaling
CNSphasing
DEMON-ANGELphasing
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-10-21
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2021-11-03
    Changes: Database references, Derived calculations