4PNO

Escherichia coli Hfq-RNA complex at 0.97 A Resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.97 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.142 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of an Escherichia coli Hfq:RNA complex at 0.97 angstrom resolution.

Schulz, E.C.Barabas, O.

(2014) Acta Crystallogr.,Sect.F 70: 1492-1497

  • DOI: 10.1107/S2053230X14020044

  • PubMed Abstract: 
  • In bacteria, small RNAs (sRNAs) silence or activate target genes through base pairing with the mRNA, thereby modulating its translation. A central player in this process is the RNA chaperone Hfq, which facilitates the annealing of sRNAs with their ta ...

    In bacteria, small RNAs (sRNAs) silence or activate target genes through base pairing with the mRNA, thereby modulating its translation. A central player in this process is the RNA chaperone Hfq, which facilitates the annealing of sRNAs with their target mRNAs. Hfq has two RNA-binding surfaces that recognize A-rich and U-rich sequences, and is believed to bind an sRNA-mRNA pair simultaneously. However, how Hfq promotes annealing remains unclear. Here, the crystal structure of Escherichia coli Hfq is presented in complex with U6-RNA bound to its proximal binding site at 0.97 Å resolution, revealing the Hfq-RNA interaction in exceptional detail.


    Organizational Affiliation

    Structural and Computational Biology Unit, European Molecular Biology Laboratory, Meyerhofstrasse 1, 69117 Heidelberg, Germany.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RNA-binding protein Hfq
A
72Escherichia coliMutation(s): 0 
Gene Names: hfq
Find proteins for C1IFD2 (Escherichia coli)
Go to UniProtKB:  C1IFD2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
U5P
Query on U5P

Download SDF File 
Download CCD File 
A
URIDINE-5'-MONOPHOSPHATE
C9 H13 N2 O9 P
DJJCXFVJDGTHFX-XVFCMESISA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 0.97 Å
  • R-Value Free: 0.164 
  • R-Value Work: 0.142 
  • Space Group: P 6
Unit Cell:
Length (Å)Angle (°)
a = 61.110α = 90.00
b = 61.110β = 90.00
c = 27.860γ = 120.00
Software Package:
Software NamePurpose
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
EU FP7 - Marie Curie IEFGermanyPIEF-GA-2011-301489

Revision History 

  • Version 1.0: 2014-11-19
    Type: Initial release
  • Version 1.1: 2014-11-26
    Type: Data collection
  • Version 1.2: 2018-03-07
    Type: Advisory, Data collection, Derived calculations, Other, Source and taxonomy