2O0T

The three dimensional structure of diaminopimelate decarboxylase from Mycobacterium tuberculosis reveals a tetrameric enzyme organisation

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 

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This is version 1.2 of the entry. See complete history. 


Literature

The three-dimensional structure of diaminopimelate decarboxylase from Mycobacterium tuberculosis reveals a tetrameric enzyme organisation.

Weyand, S., Kefala, G., Svergun, D.I., Weiss, M.S.

(2009) J Struct Funct Genomics 10: 209-217

  • DOI: 10.1007/s10969-009-9065-z
  • Primary Citation of Related Structures:  
    2O0T

  • PubMed Abstract: 

    • The three-dimensional structure of the enzyme diaminopimelate decarboxylase from Mycobacterium tuberculosis has been determined in a new crystal form and refined to a resolution of 2.33 A. The monoclinic crystals contain one tetramer exhibiting D(2)-symmetry in the asymmetric unit ...

    The three-dimensional structure of the enzyme diaminopimelate decarboxylase from Mycobacterium tuberculosis has been determined in a new crystal form and refined to a resolution of 2.33 A. The monoclinic crystals contain one tetramer exhibiting D(2)-symmetry in the asymmetric unit. The tetramer exhibits a donut-like structure with a hollow interior. All four active sites are accessible only from the interior of the tetrameric assembly. Small-angle X-ray scattering indicates that in solution the predominant oligomeric species of the protein is a dimer, but also that higher oligomers exist at higher protein concentrations. The observed scattering data are best explained by assuming a dimer-tetramer equilibrium with about 7% tetramers present in solution. Consequently, at the elevated protein concentrations in the crowded environment inside the cell the observed tetramer may constitute the biologically relevant functional unit of the enzyme.

    Related Citations: 
    • Cloning, expression, purification, crystallization and preliminary X-ray diffraction analysis of LysA (Rv1293) from Mycobacterium tuberculosis
      Kefala, G., Perry, L.J., Weiss, M.S.
      (2005) Acta Crystallogr Sect F Struct Biol Cryst Commun 61: 782
    Organizational Affiliation: 

    EMBL Hamburg Outstation, c/o DESY, Hamburg, Germany.



Macromolecules
Find similar proteins by: 
(by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Diaminopimelate decarboxylase A, B, C, D467Mycobacterium tuberculosis H37RvMutation(s): 0 
Gene Names: lysA, Rv1293, MTCY373.13
EC: 4.1.1.20
Find proteins for P9WIU7 (Mycobacterium tuberculosis (strain ATCC 25618 / H37Rv))
Explore P9WIU7 
Go to UniProtKB:  P9WIU7
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
A, B
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
LLP
Query on LLP		A,B,C,DL-PEPTIDE LINKINGC14 H22 N3 O7 PLYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.33 Å
  • R-Value Free: 0.241 
  • R-Value Work: 0.191 
  • R-Value Observed: 0.192 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 75.78α = 90
b = 106.88β = 104.99
c = 121.93γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
DENZOdata reduction
SCALEPACKdata scaling
MOLREPphasing

Structure Validation

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View more in-depth experimental data

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2007-02-13
    Type: Initial release
  • Version 1.1: 2008-05-01
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Advisory, Source and taxonomy, Version format compliance