2CXC

Crystal structure of archaeal transcription termination factor NusA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.184 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal structure and RNA-binding analysis of the archaeal transcription factor NusA

Shibata, R.Bessho, Y.Shinkai, A.Nishimoto, M.Fusatomi, E.Terada, T.Shirouzu, M.Yokoyama, S.

(2007) Biochem.Biophys.Res.Commun. 355: 122-128

  • DOI: 10.1016/j.bbrc.2007.01.119

  • PubMed Abstract: 
  • The transcription factor NusA functions in transcriptional regulation involving termination in bacteria. A NusA homolog consisting of only the two KH domains is widely conserved in archaea, but its function remains unknown. We have found that Aeropyr ...

    The transcription factor NusA functions in transcriptional regulation involving termination in bacteria. A NusA homolog consisting of only the two KH domains is widely conserved in archaea, but its function remains unknown. We have found that Aeropyrum pernix NusA strongly binds to a certain CU-rich sequence near a termination signal. Our crystal structure of A. pernix NusA revealed that its spatial arrangement is quite similar to that of the KH domains of bacterial NusA. Thus, we consider archaeal NusA to have retained some functions of bacterial NusA, including the ssRNA-binding ability. Remarkable structural differences between archaeal and bacterial NusA exist at the interface with RNAP, in connection with the different NusA-binding sites around the termination signals. Transcriptional termination in archaea could differ from all of the known bacterial and eukaryal mechanisms, in terms of the combination of a bacterial factor and a eukaryal-type RNAP.


    Organizational Affiliation

    RIKEN Genomic Sciences Center, 1-7-22 Suehiro-cho, Tsurumi, Yokohama 230-0045, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NusA
A
144Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1)Mutation(s): 0 
Gene Names: nusA
Find proteins for Q9YAU4 (Aeropyrum pernix (strain ATCC 700893 / DSM 11879 / JCM 9820 / NBRC 100138 / K1))
Go to UniProtKB:  Q9YAU4
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2 Å
  • R-Value Free: 0.211 
  • R-Value Work: 0.184 
  • Space Group: I 41
Unit Cell:
Length (Å)Angle (°)
a = 100.348α = 90.00
b = 100.348β = 90.00
c = 45.770γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data reduction
CNSrefinement
SCALEPACKdata scaling
SOLVEphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-12-28
    Type: Initial release
  • Version 1.1: 2008-04-30
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Source and taxonomy, Version format compliance