2FGC

Crystal structure of Acetolactate synthase- small subunit from Thermotoga maritima


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.168 

wwPDB Validation 3D Report Full Report


This is version 1.3 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:  2PC6

  • 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
acetolactate synthase, small subunit
A
193Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099)EC: 2.2.1.6
Find proteins for Q9WZ19 (Thermotoga maritima (strain ATCC 43589 / MSB8 / DSM 3109 / JCM 10099))
Go to UniProtKB:  Q9WZ19
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
MG
Query on MG

Download SDF File 
Download CCD File 
A
MAGNESIUM ION
Mg
JLVVSXFLKOJNIY-UHFFFAOYSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.236 
  • R-Value Work: 0.168 
  • Space Group: I 4 2 2
Unit Cell:
Length (Å)Angle (°)
a = 104.782α = 90.00
b = 104.782β = 90.00
c = 78.511γ = 90.00
Software Package:
Software NamePurpose
Omodel building
RESOLVEphasing
Cootmodel building
HKL-3000phasing
MLPHAREphasing
SHELXEmodel building
REFMACrefinement
SHELXDphasing
CCP4phasing
HKL-2000data reduction
HKL-2000data scaling
SOLVEphasing
DMphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2006-02-07
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Derived calculations, Source and taxonomy, Version format compliance
  • Version 1.3: 2012-10-24
    Type: Database references