2DAP

C. GLUTAMICUM DAP DEHYDROGENASE IN COMPLEX WITH DAP


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 

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This is version 1.2 of the entry. See complete history


Literature

Substrate and inhibitor binding sites in Corynebacterium glutamicum diaminopimelate dehydrogenase.

Scapin, G.Cirilli, M.Reddy, S.G.Gao, Y.Vederas, J.C.Blanchard, J.S.

(1998) Biochemistry 37: 3278-3285

  • DOI: 10.1021/bi9727949
  • Primary Citation of Related Structures:  
    2DAP, 3DAP

  • PubMed Abstract: 
  • The three-dimensional structures of Corynebacterium glutamicum diaminopimelate dehydrogenase as a binary complex with the substrate meso-diaminopimelate (meso-DAP) and a ternary complex with NADP+ and an isoxazoline inhibitor [Abbot, S.D., Lane-Bell, P., Kanwar, P ...

    The three-dimensional structures of Corynebacterium glutamicum diaminopimelate dehydrogenase as a binary complex with the substrate meso-diaminopimelate (meso-DAP) and a ternary complex with NADP+ and an isoxazoline inhibitor [Abbot, S.D., Lane-Bell, P., Kanwar, P.S.S., and Vederas, J. C. (1994) J. Am. Chem. Soc. 116, 6513-6520] have been solved and refined against X-ray diffraction data to 2.2 A. Diaminopimelate dehydrogenase is a homodimer of approximately 35,000 molecular weight subunits and is the only dehydrogenase present in the bacterial diaminopimelate/lysine biosynthetic pathway. Inhibitors of the enzymes of L-lysine biosynthesis have been proposed as potential antibiotics or herbicides, since mammals lack this metabolic pathway. Diaminopimelate dehydrogenase catalyzes the unique, reversible, pyridine dinucleotide-dependent oxidative deamination of the D-amino acid stereocenter of meso-diaminopimelate to generate L-2-amino-6-oxopimelate. The enzyme is absolutely specific for the meso stereoisomer of DAP and must distinguish between two opposite chiral amino acid centers on the same symmetric substrate. The determination of the three-dimensional structure of the enzyme--meso-diaminopimelate complex allows a description of the molecular basis of this stereospecific discrimination. The substrate is bound in an elongated cavity, in which the distribution of residues that act as hydrogen bond donors or acceptors defines a single orientation in which the substrate may bind in order to position the D-amino acid center of meso-DAP near the oxidized nucleotide. The previously described isoxazoline inhibitor binds at the same site as DAP but has its L-amino acid center positioned where the D-amino acid center of meso-DAP would normally be located, thereby generating a nonproductive inhibitor complex. The relative positions of the N-terminal dinucleotide and C-terminal substrate-binding domains in the diaminopimelate dehydrogenase--NADP+, diaminopimelate dehydrogenase--DAP, and diaminopimelate dehydrogenase--NADP(+)--inhibitor complexes confirm our previous observations that the enzyme undergoes significant conformational changes upon binding of both dinucleotide and substrate.


    Related Citations: 
    • Three-Dimensional Structure of Meso-Diaminopimelic Acid Dehydrogenase from Corynebacterium Glutamicum
      Scapin, G., Reddy, S.G., Blanchard, J.S.
      (1996) Biochemistry 35: 13540
    • Expression, Purification, and Crystallization of Meso-Diaminopimelate Dehydrogenase from Corynebacterium Glutamicum
      Reddy, S.G., Scapin, G., Blanchard, J.S.
      (1996) Proteins 25: 514

    Organizational Affiliation

    Biochemistry Department, Albert Einstein College of Medicine, New York 10469, USA.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
DIAMINOPIMELIC ACID DEHYDROGENASEA320Corynebacterium glutamicumMutation(s): 0 
EC: 1.4.1.16
UniProt
Find proteins for P04964 (Corynebacterium glutamicum (strain ATCC 13032 / DSM 20300 / BCRC 11384 / JCM 1318 / LMG 3730 / NCIMB 10025))
Explore P04964 
Go to UniProtKB:  P04964
Protein Feature View
Expand
  • Reference Sequence
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
API (Subject of Investigation/LOI)
Query on API

Download Ideal Coordinates CCD File 
B [auth A]2,6-DIAMINOPIMELIC ACID
C7 H14 N2 O4
GMKMEZVLHJARHF-SYDPRGILSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.20 Å
  • R-Value Free: 0.258 
  • R-Value Work: 0.170 
  • R-Value Observed: 0.170 
  • Space Group: P 3 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 121.64α = 90
b = 121.64β = 90
c = 52.36γ = 120
Software Package:
Software NamePurpose
X-PLORmodel building
X-PLORrefinement
XENGENdata reduction
XENGENdata scaling
X-PLORphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 1998-04-08
    Type: Initial release
  • Version 1.1: 2008-03-24
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Derived calculations, Version format compliance