1PVO

X-ray crystal structure of Rho transcription termination factor in complex with ssRNA substrate and ANPPNP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.00 Å
  • R-Value Free: 0.304 
  • R-Value Work: 0.271 
  • R-Value Observed: 0.274 

wwPDB Validation   3D Report Full Report


This is version 1.3 of the entry. See complete history


Literature

Structure of the Rho transcription terminator: mechanism of mRNA recognition and helicase loading

Skordalakes, E.Berger, J.M.

(2003) Cell 114: 135-146

  • DOI: 10.1016/s0092-8674(03)00512-9
  • Primary Citation of Related Structures:  
    1PV4, 1PVO

  • PubMed Abstract: 
  • In bacteria, one of the major transcriptional termination mechanisms requires a RNA/DNA helicase known as the Rho factor. We have determined two structures of Rho complexed with nucleic acid recognition site mimics in both free and nucleotide bound states to 3 ...

    In bacteria, one of the major transcriptional termination mechanisms requires a RNA/DNA helicase known as the Rho factor. We have determined two structures of Rho complexed with nucleic acid recognition site mimics in both free and nucleotide bound states to 3.0 A resolution. Both structures show that Rho forms a hexameric ring in which two RNA binding sites--a primary one responsible for target mRNA recognition and a secondary one required for mRNA translocation and unwinding--point toward the center of the ring. Rather than forming a closed ring, the Rho hexamer is split open, resembling a "lock washer" in its global architecture. The distance between subunits at the opening is sufficiently wide (12 A) to accommodate single-stranded RNA. This open configuration most likely resembles a state poised to load onto mRNA and suggests how related ring-shaped enzymes may be breached to bind nucleic acids.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California, Berkeley, 239 Hildebrand Hall, #3206, Berkeley, CA 94720, USA.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Transcription termination factor rho ABCDEF419Escherichia coliMutation(s): 0 
Gene Names: rho
EC: 3.6.4
Find proteins for P0AG30 (Escherichia coli (strain K12))
Explore P0AG30 
Go to UniProtKB:  P0AG30
Protein Feature View
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  • Reference Sequence
  • Find similar nucleic acids by:  Sequence   |   Structure
  • Entity ID: 1
    MoleculeChainsLengthOrganismImage
    5'-R(P*UP*C)-3'G, H, J, K, L2N/A
    Experimental Data & Validation

    Experimental Data

    • Method: X-RAY DIFFRACTION
    • Resolution: 3.00 Å
    • R-Value Free: 0.304 
    • R-Value Work: 0.271 
    • R-Value Observed: 0.274 
    • Space Group: C 1 2 1
    Unit Cell:
    Length ( Å )Angle ( ˚ )
    a = 119.249α = 90
    b = 204.649β = 96.54
    c = 147.788γ = 90
    Software Package:
    Software NamePurpose
    REFMACrefinement
    HKL-2000data reduction
    SCALEPACKdata scaling
    AMoREphasing

    Structure Validation

    View Full Validation Report



    Entry History 

    Deposition Data

    Revision History  (Full details and data files)

    • Version 1.0: 2003-07-22
      Type: Initial release
    • Version 1.1: 2008-04-29
      Changes: Version format compliance
    • Version 1.2: 2011-07-13
      Changes: Advisory, Version format compliance
    • Version 1.3: 2018-01-31
      Changes: Experimental preparation