2PC6

Crystal structure of putative acetolactate synthase- small subunit from Nitrosomonas europaea


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.5 Å
  • R-Value Free: 0.276 
  • R-Value Work: 0.205 

wwPDB Validation 3D Report Full Report


This is version 1.4 of the entry. See complete history

Literature

Crystal structures of TM0549 and NE1324--two orthologs of E. coli AHAS isozyme III small regulatory subunit.

Petkowski, J.J.Chruszcz, M.Zimmerman, M.D.Zheng, H.Skarina, T.Onopriyenko, O.Cymborowski, M.T.Koclega, K.D.Savchenko, A.Edwards, A.Minor, W.

(2007) Protein Sci. 16: 1360-1367

  • DOI: 10.1110/ps.072793807
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Crystal structures of two orthologs of the regulatory subunit of acetohydroxyacid synthase III (AHAS, EC 2.2.1.6) from Thermotoga maritima (TM0549) and Nitrosomonas europea (NE1324) were determined by single-wavelength anomalous diffraction methods w ...

    Crystal structures of two orthologs of the regulatory subunit of acetohydroxyacid synthase III (AHAS, EC 2.2.1.6) from Thermotoga maritima (TM0549) and Nitrosomonas europea (NE1324) were determined by single-wavelength anomalous diffraction methods with the use of selenomethionine derivatives at 2.3 A and 2.5 A, respectively. TM0549 and NE1324 share the same fold, and in both proteins the polypeptide chain contains two separate domains of a similar size. Each protein contains a C-terminal domain with ferredoxin-type fold and an N-terminal ACT domain, of which the latter is characteristic for several proteins involved in amino acid metabolism. The ferredoxin domain is stabilized by a calcium ion in the crystal structure of NE1324 and by a Mg(H2O)(6)2+ ion in TM0549. Both TM0549 and NE1324 form dimeric assemblies in the crystal lattice.


    Organizational Affiliation

    Department of Molecular Physiology and Biological Physics, University of Virginia, Charlottesville 22908, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Probable acetolactate synthase isozyme III (Small subunit)
A, B, C, D
165Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298)Mutation(s): 0 
Gene Names: ilvH
EC: 4.1.3.18
Find proteins for Q82UZ2 (Nitrosomonas europaea (strain ATCC 19718 / CIP 103999 / KCTC 2705 / NBRC 14298))
Go to UniProtKB:  Q82UZ2
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CA
Query on CA

Download SDF File 
Download CCD File 
A, B, C
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B, C, D
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

Unit Cell:
Length (Å)Angle (°)
a = 122.123α = 90.00
b = 122.123β = 90.00
c = 111.559γ = 90.00
Software Package:
Software NamePurpose
MLPHAREphasing
Cootmodel building
CCP4model building
Omodel building
RESOLVEphasing
ARP/wARPmodel building
HKL-2000data reduction
REFMACrefinement
SHELXEmodel building
SOLVEphasing
HKL-3000phasing
DMmodel building
DMphasing
HKL-2000data collection
HKL-2000data scaling
SHELXDphasing
CCP4phasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-04-10
    Type: Initial release
  • Version 1.1: 2007-10-09
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Advisory, Derived calculations, Version format compliance
  • Version 1.3: 2012-02-01
    Type: Non-polymer description
  • Version 1.4: 2017-10-18
    Type: Refinement description