1L5J

CRYSTAL STRUCTURE OF E. COLI ACONITASE B.


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.151 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

E. coli aconitase B structure reveals a HEAT-like domain with implications for protein-protein recognition.

Williams, C.H.Stillman, T.J.Barynin, V.V.Sedelnikova, S.E.Tang, Y.Green, J.Guest, J.R.Artymiuk, P.J.

(2002) Nat.Struct.Mol.Biol. 9: 447-452

  • DOI: 10.1038/nsb801

  • PubMed Abstract: 
  • The major bifunctional aconitase of Escherichia coli (AcnB) serves as either an enzymic catalyst or a mRNA-binding post-transcriptional regulator, depending on the status of its iron sulfur cluster. AcnB represents a large, distinct group of Gram-neg ...

    The major bifunctional aconitase of Escherichia coli (AcnB) serves as either an enzymic catalyst or a mRNA-binding post-transcriptional regulator, depending on the status of its iron sulfur cluster. AcnB represents a large, distinct group of Gram-negative bacterial aconitases that have an altered domain organization relative to mitochondrial aconitase and other aconitases. Here the 2.4 A structure of E. coli AcnB reveals a high degree of conservation at the active site despite its domain reorganization. It also reveals that the additional domain, characteristic of the AcnB subfamily, is a HEAT-like domain, implying a role in protein protein recognition. This domain packs against the remainder of the protein to form a tunnel leading to the aconitase active site, potentially for substrate channeling.


    Organizational Affiliation

    Krebs Institute for Biomolecular Research, Department of Molecular Biology and Biotechnology, University of Sheffield, Firth Court, Western Bank, Sheffield S10 2TN, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Aconitate hydratase 2
A, B
865Escherichia coli (strain K12)Gene Names: acnB (yacI, yacJ)
EC: 4.2.1.3, 4.2.1.99
Find proteins for P36683 (Escherichia coli (strain K12))
Go to UniProtKB:  P36683
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
F3S
Query on F3S

Download SDF File 
Download CCD File 
A, B
FE3-S4 CLUSTER
Fe3 S4
FCXHZBQOKRZXKS-MZMDZPPWAW
 Ligand Interaction
TRA
Query on TRA

Download SDF File 
Download CCD File 
A, B
ACONITATE ION
C6 H3 O6
GTZCVFVGUGFEME-HNQUOIGGSA-K
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.203 
  • R-Value Work: 0.151 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 138.970α = 90.00
b = 169.630β = 90.00
c = 113.380γ = 90.00
Software Package:
Software NamePurpose
DENZOdata reduction
MLPHAREphasing
REFMACrefinement
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2002-06-12
    Type: Initial release
  • Version 1.1: 2008-04-28
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance