Solution Structure of E. coli NusG carboxyterminal domain

Experimental Data Snapshot

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

wwPDB Validation   3D Report Full Report

This is version 1.4 of the entry. See complete history


Two structurally independent domains of E. coli NusG create regulatory plasticity via distinct interactions with RNA polymerase and regulators.

Mooney, R.A.Schweimer, K.Rosch, P.Gottesman, M.Landick, R.

(2009) J Mol Biol 391: 341-358

  • DOI: https://doi.org/10.1016/j.jmb.2009.05.078
  • Primary Citation of Related Structures:  
    2JVV, 2K06

  • PubMed Abstract: 

    NusG is a conserved regulatory protein that interacts with elongation complexes (ECs) of RNA polymerase, DNA, and RNA to modulate transcription in multiple and sometimes opposite ways. In Escherichia coli, NusG suppresses pausing and increases elongation rate, enhances termination by E. coli rho and phage HK022 Nun protein, and promotes antitermination by lambdaN and in ribosomal RNA operons. We report NMR studies that suggest that E. coli NusG consists of two largely independent N- and C-terminal structural domains, NTD and CTD, respectively. Based on tests of the functions of the NTD and CTD and variants of NusG in vivo and in vitro, we find that NTD alone is sufficient to suppress pausing and enhance transcript elongation in vitro. However, neither domain alone can enhance rho-dependent termination or support antitermination, indicating that interactions of both domains with ECs are required for these processes. We propose that the two domains of NusG mediate distinct interactions with ECs: the NTD interacts with RNA polymerase and the CTD interacts with rho and other regulators, providing NusG with different combinations of interactions to effect different regulatory outcomes.

  • Organizational Affiliation

    Department of Biochemistry, University of Wisconsin, Madison, WI 53706, USA.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Transcription antitermination protein nusG181Escherichia coliMutation(s): 0 
Gene Names: nusG
Find proteins for P0AFG0 (Escherichia coli (strain K12))
Explore P0AFG0 
Go to UniProtKB:  P0AFG0
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP0AFG0
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: SOLUTION NMR
  • Conformers Calculated: 120 
  • Conformers Submitted: 20 
  • Selection Criteria: structures with the lowest energy 

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2008-10-14
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2013-01-30
    Changes: Data collection
  • Version 1.3: 2014-08-13
    Changes: Database references
  • Version 1.4: 2024-05-01
    Changes: Data collection, Database references