5W1T

X-ray crystal structure of Escherichia coli RNA polymerase and DksA complex

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 

wwPDB Validation   3D Report Full Report


This is version 1.4 of the entry. See complete history. 


Literature

Allosteric Effector ppGpp Potentiates the Inhibition of Transcript Initiation by DksA.

Molodtsov, V., Sineva, E., Zhang, L., Huang, X., Cashel, M., Ades, S.E., Murakami, K.S.

(2018) Mol Cell 69: 828-839.e5

  • DOI: 10.1016/j.molcel.2018.01.035
  • Primary Citation of Related Structures:  
    5VSW, 5W1S, 5W1T

  • PubMed Abstract: 

    • DksA and ppGpp are the central players in the stringent response and mediate a complete reprogramming of the transcriptome. A major component of the response is a reduction in ribosome synthesis, which is accomplished by the synergistic action of DksA and ppGpp bound to RNA polymerase (RNAP) inhibiting transcription of rRNAs ...

    DksA and ppGpp are the central players in the stringent response and mediate a complete reprogramming of the transcriptome. A major component of the response is a reduction in ribosome synthesis, which is accomplished by the synergistic action of DksA and ppGpp bound to RNA polymerase (RNAP) inhibiting transcription of rRNAs. Here, we report the X-ray crystal structures of Escherichia coli RNAP in complex with DksA alone and with ppGpp. The structures show that DksA accesses the template strand at the active site and the downstream DNA binding site of RNAP simultaneously and reveal that binding of the allosteric effector ppGpp reshapes the RNAP-DksA complex. The structural data support a model for transcriptional inhibition in which ppGpp potentiates the destabilization of open complexes by DksA. This work establishes a structural basis for understanding the pleiotropic effects of DksA and ppGpp on transcriptional regulation in proteobacteria.

    Organizational Affiliation: 

    Department of Biochemistry and Molecular Biology, The Center for RNA Molecular Biology, The Pennsylvania State University, University Park, PA 16802, USA. Electronic address: kum14@psu.edu.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit alphaA, B, G, H329Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoA, pez, phs, sez, b3295, JW3257
EC: 2.7.7.6
UniProt
Find proteins for P0A7Z4 (Escherichia coli (strain K12))
Explore P0A7Z4 
Go to UniProtKB:  P0A7Z4
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit betaC, I1342Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoB, groN, nitB, rif, ron, stl, stv, tabD, b3987, JW3950
EC: 2.7.7.6
UniProt
Find proteins for P0A8V2 (Escherichia coli (strain K12))
Explore P0A8V2 
Go to UniProtKB:  P0A8V2
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 3
MoleculeChainsSequence LengthOrganismDetailsImage
DNA-directed RNA polymerase subunit beta'D, J1407Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoC, tabB, b3988, JW3951
EC: 2.7.7.6
UniProt
Find proteins for P0A8T7 (Escherichia coli (strain K12))
Explore P0A8T7 
Go to UniProtKB:  P0A8T7
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 4
MoleculeChainsSequence LengthOrganismDetailsImage
RpoZE, K91Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoZ, b3649, JW3624
EC: 2.7.7.6
UniProt
Find proteins for P0A800 (Escherichia coli (strain K12))
Explore P0A800 
Go to UniProtKB:  P0A800
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 5
MoleculeChainsSequence LengthOrganismDetailsImage
RNA polymerase sigma factor RpoDF, L613Escherichia coli K-12Mutation(s): 0 
Gene Names: rpoD, alt, b3067, JW3039
UniProt
Find proteins for P00579 (Escherichia coli (strain K12))
Explore P00579 
Go to UniProtKB:  P00579
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 6
MoleculeChainsSequence LengthOrganismDetailsImage
RNA polymerase-binding transcription factor DksAM, N151Escherichia coli K-12Mutation(s): 0 
Gene Names: dksA, b0145, JW0141
UniProt
Find proteins for P0ABS1 (Escherichia coli (strain K12))
Explore P0ABS1 
Go to UniProtKB:  P0ABS1
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.50 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.220 
  • R-Value Observed: 0.221 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 184α = 90
b = 204.894β = 90
c = 314.312γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
HKL-2000data reduction
HKL-2000data scaling
PHENIXphasing

Structure Validation

View Full Validation Report



View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute of General Medical Sciences (NIH/NIGMS)United StatesGM087350

Revision History  (Full details and data files)

  • Version 1.0: 2017-06-14
    Type: Initial release
  • Version 1.1: 2017-09-20
    Changes: Author supporting evidence
  • Version 1.2: 2018-02-07
    Changes: Database references
  • Version 1.3: 2018-03-14
    Changes: Database references
  • Version 1.4: 2020-01-01
    Changes: Author supporting evidence