3L0O

Structure of RNA-free Rho transcription termination factor from Thermotoga maritima


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.268 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

The Structure of RNA-Free Rho Termination Factor Indicates a Dynamic Mechanism of Transcript Capture

Canals, A.Uson, I.Coll, M.

(2010) J.Mol.Biol. 400: 16-23

  • DOI: 10.1016/j.jmb.2010.05.004

  • PubMed Abstract: 
  • The Rho factor is a ring-shaped ATP-dependent helicase that mediates transcription termination in most prokaryotic cells by disengaging the transcription elongation complex formed by the RNA polymerase, DNA, and the nascent RNA transcript. The crysta ...

    The Rho factor is a ring-shaped ATP-dependent helicase that mediates transcription termination in most prokaryotic cells by disengaging the transcription elongation complex formed by the RNA polymerase, DNA, and the nascent RNA transcript. The crystal structures of key intermediates along the kinetic pathway of RNA binding to Rho unveiled an unprecedented mode of helicase loading and provided a model for the ATP turnover coupled to coordinated strand movement. Here we report the structure of the early RNA-free state of Rho, which had eluded crystallization for many years but now completes the series. The structure allows the characterization of the apo-form Rho from Thermotoga maritima to 2.3 A resolution, reveals an RNA-recruiting site that becomes hidden after occupancy of the adjacent specific primary RNA-binding site, and suggests an enriched model for mRNA capture that is consistent with previous data.


    Organizational Affiliation

    Institute for Research in Biomedicine, Barcelona Science Park, Baldiri Reixac 10, 08028 Barcelona, Spain. albert.canals@irbbarcelona.org




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Transcription termination factor rho
A, B
427Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)Mutation(s): 0 
Gene Names: rho
EC: 3.6.4.-
Find proteins for P38527 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  P38527
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NA
Query on NA

Download SDF File 
Download CCD File 
B
SODIUM ION
Na
FKNQFGJONOIPTF-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
IUM
Query on IUM

Download SDF File 
Download CCD File 
A, B
URANYL (VI) ION
O2 U
IZLHQJIUOZHTLW-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.297 
  • R-Value Work: 0.268 
  • Space Group: P 43 2 2
Unit Cell:
Length (Å)Angle (°)
a = 139.000α = 90.00
b = 139.000β = 90.00
c = 150.000γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
SHELXSphasing
XDSdata scaling
DNAdata collection
REFMACrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-05-26
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance