1E2T

Arylamine N-acetyltransferase (NAT) from Salmonella typhimurium


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.264 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Arylamine N-Acetyltransferase Reveals a Catalytic Triad

Sinclair, J.C.Sandy, J.Delgoda, R.Sim, E.Noble, M.E.M.

(2000) Nat.Struct.Mol.Biol. 7: 560

  • DOI: 10.1038/76783

  • PubMed Abstract: 
  • Enzymes of the arylamine N-acetyltransferase (NAT) family are found in species ranging from Escherichia coli to humans. In humans they are known to be responsible for the acetylation of a number of arylamine and hydrazine drugs, and they are strongly ...

    Enzymes of the arylamine N-acetyltransferase (NAT) family are found in species ranging from Escherichia coli to humans. In humans they are known to be responsible for the acetylation of a number of arylamine and hydrazine drugs, and they are strongly linked to the carcinogenic potentiation of certain foreign substances. In prokaryotes their substrate specificities may vary and members of the gene family have been linked to pathways including amide synthesis during rifamycin production. Here we report the crystal structure at 2.8 A resolution of a representative member of this family from Salmonella typhimurium in the presence and absence of a covalently bound product analog. The structure reveals surprising mechanistic information including the presence of a Cys-His-Asp catalytic triad. The fold can be described in terms of three domains of roughly equal length with the second and third domains linked by an interdomain helix. The first two domains, a helical bundle and a beta-barrel, make up the catalytic triad using a structural motif identical to that of the cysteine protease superfamily.


    Related Citations: 
    • Purification, Characterization, and Crystallization of an N-Hydroxyarylamine O-Acetyltransferase from Salmonella Typhimurium
      Sinclair, J.C.,Delgoda, R.,Noble, M.E.,Jarmin, S.,Goh, N.K.,Sim, E.
      (1998) Protein Expr.Purif. 12: 371


    Organizational Affiliation

    Laboratory of Molecular Biophysics and Oxford Centre for Molecular Sciences, Rex Richards Building, Department of Biochemistry, University of Oxford, South Parks Road, Oxford OX1 3QU, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
N-HYDROXYARYLAMINE O-ACETYLTRANSFERASE
A, B, C, D, E, F, G, H
284Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720)Gene Names: nhoA
EC: 2.3.1.118
Find proteins for Q00267 (Salmonella typhimurium (strain LT2 / SGSC1412 / ATCC 700720))
Go to UniProtKB:  Q00267
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • R-Value Free: 0.302 
  • R-Value Work: 0.264 
  • Space Group: P 21 21 2
Unit Cell:
Length (Å)Angle (°)
a = 134.530α = 90.00
b = 222.419β = 90.00
c = 104.662γ = 90.00
Software Package:
Software NamePurpose
CNSrefinement
CNSphasing
MOSFLMdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2000-07-07
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance