3AWO

Crystal structure of D-serine dehydratase in complex with D-serine from chicken kidney (EDTA-treated)


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.209 

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Literature

Crystal structure of a zinc-dependent D-serine dehydratase from chicken kidney.

Tanaka, H.Senda, M.Venugopalan, N.Yamamoto, A.Senda, T.Ishida, T.Horiike, K.

(2011) J Biol Chem 286: 27548-27558

  • DOI: https://doi.org/10.1074/jbc.M110.201160
  • Primary Citation of Related Structures:  
    3ANU, 3ANV, 3AWN, 3AWO

  • PubMed Abstract: 

    D-serine is a physiological co-agonist of the N-methyl-D-aspartate receptor. It regulates excitatory neurotransmission, which is important for higher brain functions in vertebrates. In mammalian brains, D-amino acid oxidase degrades D-serine. However, we have found recently that in chicken brains the oxidase is not expressed and instead a D-serine dehydratase degrades D-serine. The primary structure of the enzyme shows significant similarities to those of metal-activated D-threonine aldolases, which are fold-type III pyridoxal 5'-phosphate (PLP)-dependent enzymes, suggesting that it is a novel class of D-serine dehydratase. In the present study, we characterized the chicken enzyme biochemically and also by x-ray crystallography. The enzyme activity on D-serine decreased 20-fold by EDTA treatment and recovered nearly completely by the addition of Zn(2+). None of the reaction products that would be expected from side reactions of the PLP-D-serine Schiff base were detected during the >6000 catalytic cycles of dehydration, indicating high reaction specificity. We have determined the first crystal structure of the D-serine dehydratase at 1.9 Å resolution. In the active site pocket, a zinc ion that coordinates His(347) and Cys(349) is located near the PLP-Lys(45) Schiff base. A theoretical model of the enzyme-D-serine complex suggested that the hydroxyl group of D-serine directly coordinates the zinc ion, and that the ε-NH(2) group of Lys(45) is a short distance from the substrate Cα atom. The α-proton abstraction from D-serine by Lys(45) and the elimination of the hydroxyl group seem to occur with the assistance of the zinc ion, resulting in the strict reaction specificity.


  • Organizational Affiliation

    Department of Biochemistry and Molecular Biology, Shiga University of Medical Science, Seta, Ohtsu, Shiga 520-2192, Japan.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
D-serine dehydratase376Gallus gallusMutation(s): 0 
EC: 4.3.1.18
UniProt
Find proteins for A0A8V1ABE9 (Gallus gallus)
Explore A0A8V1ABE9 
Go to UniProtKB:  A0A8V1ABE9
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A8V1ABE9
Sequence Annotations
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.65 Å
  • R-Value Free: 0.266 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.209 
  • Space Group: P 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 105.053α = 90
b = 105.053β = 90
c = 81.916γ = 90
Software Package:
Software NamePurpose
ADSCdata collection
MOLREPphasing
REFMACrefinement
XDSdata reduction
XSCALEdata scaling

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2011-06-15
    Type: Initial release
  • Version 1.1: 2011-07-13
    Changes: Version format compliance
  • Version 1.2: 2015-12-09
    Changes: Database references
  • Version 1.3: 2024-03-13
    Changes: Data collection, Database references, Derived calculations