4G94

G1 ORF67 / Staphyloccus aureus sigmaA domain 4 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9971 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.0 of the entry. See complete history

Literature

Promoter-specific transcription inhibition in Staphylococcus aureus by a phage protein.

Osmundson, J.Montero-Diez, C.Westblade, L.F.Hochschild, A.Darst, S.A.

(2012) Cell 151: 1005-1016

  • DOI: 10.1016/j.cell.2012.10.034
  • Primary Citation of Related Structures:  4G6D, 4G8X

  • PubMed Abstract: 
  • Phage G1 gp67 is a 23 kDa protein that binds to the Staphylococcus aureus (Sau) RNA polymerase (RNAP) σ(A) subunit and blocks cell growth by inhibiting transcription. We show that gp67 has little to no effect on transcription from most promoters but ...

    Phage G1 gp67 is a 23 kDa protein that binds to the Staphylococcus aureus (Sau) RNA polymerase (RNAP) σ(A) subunit and blocks cell growth by inhibiting transcription. We show that gp67 has little to no effect on transcription from most promoters but is a potent inhibitor of ribosomal RNA transcription. A 2.0-Å-resolution crystal structure of the complex between gp67 and Sau σ(A) domain 4 (σ(A)(4)) explains how gp67 joins the RNAP promoter complex through σ(A)(4) without significantly affecting σ(A)(4) function. Our results indicate that gp67 forms a complex with RNAP at most, if not all, σ(A)-dependent promoters, but selectively inhibits promoters that depend on an interaction between upstream DNA and the RNAP α-subunit C-terminal domain (αCTD). Thus, we reveal a promoter-specific transcription inhibition mechanism by which gp67 interacts with the RNAP promoter complex through one subunit (σ(A)), and selectively affects the function of another subunit (αCTD) depending on promoter usage.


    Organizational Affiliation

    The Rockefeller University, 1230 York Avenue, New York, NY 10065, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA polymerase sigma factor rpoD
A
62Staphylococcus aureus (strain NCTC 8325)Gene Names: sigA (plaC, rpoD)
Find proteins for P0A0J0 (Staphylococcus aureus (strain NCTC 8325))
Go to UniProtKB:  P0A0J0
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
ORF067
B
198Staphylococcus phage G1N/A
Find proteins for Q4Z9Y5 (Staphylococcus phage G1)
Go to UniProtKB:  Q4Z9Y5
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.9971 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.205 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 38.381α = 90.00
b = 64.724β = 90.00
c = 108.721γ = 90.00
Software Package:
Software NamePurpose
HKL-2000data collection
HKL-2000data reduction
SHARPphasing
HKL-2000data scaling
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2013-01-23
    Type: Initial release