Biological Assembly 1  

 3D View: Structure

Standalone Viewers  (To be retired June 1st  )
Protein Workshop | Ligand Explorer

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors.

Macromolecule Content

• Total Structure Weight: 28.04 kDa 
• Atom Count: 1731 
• Residue Count: 182 
• Unique protein chains: 1

1M1H

Crystal structure of Aquifex aeolicus N-utilization substance G (NusG), Space group I222

• DOI: 10.2210/pdb1M1H/pdb

• Classification: TRANSCRIPTION
• Organism(s): Aquifex aeolicus
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2002-06-19 Released: 2003-02-04 
• Deposition Author(s): Steiner, T., Kaiser, J.T., Marinkovic, S., Huber, R., Wahl, M.C.

---

Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.259 
• R-Value Work: 0.234 
• R-Value Observed: 0.234 

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

• PubMed: 12198166 
• DOI: 10.1093/emboj/cdf455
• Structures With Same Primary Citation


• 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 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

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Transcription antitermination protein nusG	A	248	Aquifex aeolicus	Mutation(s): 0
Find proteins for O67757 (Aquifex aeolicus (strain VF5)) Go to UniProtKB:  O67757

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.95 Å
• R-Value Free: 0.259 
• R-Value Work: 0.234 
• R-Value Observed: 0.234 
• Space Group: I 2 2 2

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 81.1	α = 90
b = 86.2	β = 90
c = 108.4	γ = 90

Software Package:

Software Name	Purpose
HKL-2000	data collection
SCALEPACK	data scaling
MLPHARE	phasing
CNS	refinement
REFMAC	refinement
HKL-2000	data reduction

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2002-06-19 
• Released Date: 2003-02-04 
Deposition Author(s): Steiner, T., Kaiser, J.T., Marinkovic, S., Huber, R., Wahl, M.C.

Revision History 

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