1L2F

Crystal structure of NusA from Thermotoga maritima: a structure-based role of the N-terminal domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.223 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure of NusA from Thermotoga maritima and functional implication of the N-terminal domain.

Shin, D.H.Nguyen, H.H.Jancarik, J.Yokota, H.Kim, R.Kim, S.H.

(2003) Biochemistry 42: 13429-13437

  • DOI: 10.1021/bi035118h

  • PubMed Abstract: 
  • We report the crystal structure of N-utilizing substance A protein (NusA) from Thermotoga maritima (TmNusA), a protein involved in transcriptional pausing, termination, and antitermination. TmNusA has an elongated rod-shaped structure consisting of a ...

    We report the crystal structure of N-utilizing substance A protein (NusA) from Thermotoga maritima (TmNusA), a protein involved in transcriptional pausing, termination, and antitermination. TmNusA has an elongated rod-shaped structure consisting of an N-terminal domain (NTD, residues 1-132) and three RNA binding domains (RBD). The NTD consists of two subdomains, the globular head and the helical body domains, that comprise a unique three-dimensional structure that may be important for interacting with RNA polymerase. The globular head domain possesses a high content of negatively charged residues that may interact with the positively charged flaplike domain of RNA polymerase. The helical body domain is composed of a three-helix bundle that forms a hydrophobic core with the aid of two neighboring beta-strands. This domain shows structural similarity with one of the helical domains of sigma(70) factor from Escherichia coli. One side of the molecular surface shows positive electrostatic potential suitable for nonspecific RNA interaction. The RBD is composed of one S1 domain and two K-homology (KH) domains forming an elongated RNA binding surface. Structural comparison between TmNusA and Mycobacterium tuberculosis NusA reveals a possible hinge motion between NTD and RBD. In addition, a functional implication of the NTD in its interaction with RNA polymerase is discussed.


    Organizational Affiliation

    Physical Biosciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N utilization substance protein A
A
369Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Gene Names: nusA
Find proteins for Q9X298 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q9X298
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.223 
  • Space Group: P 43 21 2
Unit Cell:
Length (Å)Angle (°)
a = 116.191α = 90.00
b = 116.191β = 90.00
c = 64.631γ = 90.00
Software Package:
Software NamePurpose
SOLVEphasing
DENZOdata reduction
CNSrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2003-09-23
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance