1M1G

Crystal Structure of Aquifex aeolicus N-utilization substance G (NusG), Space Group P2(1)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.251 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structures of transcription factor NusG in light of its nucleic acid- and protein-binding activities

Steiner, T.Kaiser, J.T.Marinkovic, S.Huber, R.Wahl, M.C.

(2002) Embo J. 21: 4641-4653

  • Primary Citation of Related Structures:  1M1H

  • PubMed Abstract: 
  • Microbial transcription modulator NusG interacts with RNA polymerase and termination factor rho, displaying striking functional homology to eukaryotic Spt5. The protein is also a translational regulator. We have determined crystal structures of Aquif ...

    Microbial transcription modulator NusG interacts with RNA polymerase and termination factor rho, displaying striking functional homology to eukaryotic Spt5. The protein is also a translational regulator. We have determined crystal structures of Aquifex aeolicus NusG showing a modular design: an N-terminal RNP-like domain, a C-terminal element with a KOW sequence motif and a species-specific immunoglobulin-like fold. The structures reveal bona fide nucleic acid binding sites, and nucleic acid binding activities can be detected for NusG from three organisms and for the KOW element alone. A conserved KOW domain is defined as a new class of nucleic acid binding folds. This module is a close structural homolog of tudor protein-protein interaction motifs. Putative protein binding sites for the RNP and KOW domains can be deduced, which differ from the areas implicated in nucleic acid interactions. The results strongly argue that both protein and nucleic acid contacts are important for NusG's functions and that the factor can act as an adaptor mediating indirect protein-nucleic acid associations.


    Organizational Affiliation

    Max-Planck Institut für Biochemie, Abteilung Strukturforschung, Am Klopferspitz 18a, D-82152 Martinsried, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription antitermination protein nusG
A, B, C, D
248Aquifex aeolicus (strain VF5)Gene Names: nusG
Find proteins for O67757 (Aquifex aeolicus (strain VF5))
Go to UniProtKB:  O67757
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.274 
  • R-Value Work: 0.251 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 87.500α = 90.00
b = 54.400β = 89.30
c = 113.200γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data collection
MOLREPphasing
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-02-04
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance