2XHA

Crystal Structure of Domain 2 of Thermotoga maritima N-utilization Substance G (NusG)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

An Autoinhibited State in the Structure of Thermotoga Maritima Nusg.

Drogemuller, J.Stegmann, C.M.Mandal, A.Steiner, T.Burmann, B.M.Gottesman, M.E.Wohrl, B.M.Rosch, P.Wahl, M.C.Schweimer, K.

(2013) Structure 21: 365

  • DOI: https://doi.org/10.1016/j.str.2012.12.015
  • Primary Citation of Related Structures:  
    2LQ8, 2XHA, 2XHC

  • PubMed Abstract: 

    NusG is a conserved regulatory protein interacting with RNA polymerase (RNAP) and other proteins to form multicomponent complexes that modulate transcription. The crystal structure of Thermotoga maritima NusG (TmNusG) shows a three-domain architecture, comprising well-conserved amino-terminal (NTD) and carboxy-terminal (CTD) domains with an additional, species-specific domain inserted into the NTD. NTD and CTD directly contact each other, occluding a surface of the NTD for binding to RNAP and a surface on the CTD interacting either with transcription termination factor Rho or transcription antitermination factor NusE. NMR spectroscopy confirmed the intramolecular NTD-CTD interaction up to the optimal growth temperature of Thermotoga maritima. The domain interaction involves a dynamic equilibrium between open and closed states and contributes significantly to the overall fold stability of the protein. Wild-type TmNusG and deletion variants could not replace endogenous Escherichia coli NusG, suggesting that the NTD-CTD interaction of TmNusG represents an autoinhibited state.


  • Organizational Affiliation

    Lehrstuhl Biopolymere und Forschungszentrum für Biomakromoleküle, Universität Bayreuth, Universitätsstrasse 30, Bayreuth, Germany.


Macromolecules
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Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
TRANSCRIPTION ANTITERMINATION PROTEIN NUSG
A, B
193Thermotoga maritimaMutation(s): 0 
UniProt
Find proteins for P29397 (Thermotoga maritima (strain ATCC 43589 / DSM 3109 / JCM 10099 / NBRC 100826 / MSB8))
Explore P29397 
Go to UniProtKB:  P29397
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP29397
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.181 
  • R-Value Observed: 0.183 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 136.35α = 90
b = 42.264β = 106.56
c = 88.36γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
DENZOdata reduction
SCALEPACKdata scaling
SHELXphasing

Structure Validation

View Full Validation Report



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-06-29
    Type: Initial release
  • Version 1.1: 2013-02-27
    Changes: Database references, Version format compliance
  • Version 1.2: 2013-04-03
    Changes: Database references
  • Version 1.3: 2024-05-08
    Changes: Data collection, Database references, Derived calculations, Other