2VMK

Crystal Structure of E. coli RNase E Apoprotein - Catalytic Domain


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.267 
  • R-Value Observed: 0.268 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

The Crystal Structure of the Escherichia Coli Rnase E Apoprotein and a Mechanism for RNA Degradation.

Koslover, D.J.Callaghan, A.J.Marcaida, M.J.Garman, E.F.Martick, M.Scott, W.G.Luisi, B.F.

(2008) Structure 16: 1238

  • DOI: 10.1016/j.str.2008.04.017
  • Structures With Same Primary Citation

  • PubMed Abstract: 
  • RNase E is an essential bacterial endoribonuclease involved in the turnover of messenger RNA and the maturation of structured RNA precursors in Escherichia coli. Here, we present the crystal structure of the E. coli RNase E catalytic domain in the ap ...

    RNase E is an essential bacterial endoribonuclease involved in the turnover of messenger RNA and the maturation of structured RNA precursors in Escherichia coli. Here, we present the crystal structure of the E. coli RNase E catalytic domain in the apo-state at 3.3 A. This structure indicates that, upon catalytic activation, RNase E undergoes a marked conformational change characterized by the coupled movement of two RNA-binding domains to organize the active site. The structural data suggest a mechanism of RNA recognition and cleavage that explains the enzyme's preference for substrates possessing a 5'-monophosphate and accounts for the protective effect of a triphosphate cap for most transcripts. Internal flexibility within the quaternary structure is also observed, a finding that has implications for recognition of structured RNA substrates and for the mechanism of internal entry for a subset of substrates that are cleaved without 5'-end requirements.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, Tennis Court Road, Cambridge CB2 1GA, United Kingdom.



Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
RIBONUCLEASE E
A, B, C, D
515Escherichia coliMutation(s): 0 
EC: 3.1.4 (PDB Primary Data), 3.1.26.12 (UniProt)
Find proteins for P21513 (Escherichia coli (strain K12))
Go to UniProtKB:  P21513
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

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

Download CCD File 
B, D
ZINC ION
Zn
PTFCDOFLOPIGGS-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 3.30 Å
  • R-Value Free: 0.293 
  • R-Value Work: 0.267 
  • R-Value Observed: 0.268 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 73.241α = 94.95
b = 75.571β = 102.03
c = 109.37γ = 91.77
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
PHASERphasing
MOLREPphasing
REFMACphasing

Structure Validation

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Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2008-07-22
    Type: Initial release
  • Version 1.1: 2011-05-08
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance