Human N-acetyltransferase 1

Experimental Data Snapshot

  • Resolution: 1.78 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.170 

Starting Model: experimental
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This is version 1.4 of the entry. See complete history


Structural Basis of Substrate-binding Specificity of Human Arylamine N-Acetyltransferases.

Wu, H.Dombrovsky, L.Tempel, W.Martin, F.Loppnau, P.Goodfellow, G.H.Grant, D.M.Plotnikov, A.N.

(2007) J Biol Chem 282: 30189-30197

  • DOI: https://doi.org/10.1074/jbc.M704138200
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    The human arylamine N-acetyltransferases NAT1 and NAT2 play an important role in the biotransformation of a plethora of aromatic amine and hydrazine drugs. They are also able to participate in the bioactivation of several known carcinogens. Each of these enzymes is genetically variable in human populations, and polymorphisms in NAT genes have been associated with various cancers. Here we have solved the high resolution crystal structures of human NAT1 and NAT2, including NAT1 in complex with the irreversible inhibitor 2-bromoacetanilide, a NAT1 active site mutant, and NAT2 in complex with CoA, and have refined them to 1.7-, 1.8-, and 1.9-A resolution, respectively. The crystal structures reveal novel structural features unique to human NATs and provide insights into the structural basis of the substrate specificity and genetic polymorphism of these enzymes.

  • Organizational Affiliation

    Structural Genomics Consortium, University of Toronto, Toronto, Ontario M5G 1L5.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Arylamine N-acetyltransferase 1295Homo sapiensMutation(s): 1 
Gene Names: NAT1AAC1
UniProt & NIH Common Fund Data Resources
Find proteins for P18440 (Homo sapiens)
Explore P18440 
Go to UniProtKB:  P18440
GTEx:  ENSG00000171428 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP18440
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 1.78 Å
  • R-Value Free: 0.216 
  • R-Value Work: 0.170 
  • Space Group: P 1 21 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 37.274α = 90
b = 44.975β = 99.17
c = 83.959γ = 90
Software Package:
Software NamePurpose
DENZOdata reduction
SCALEPACKdata scaling
PDB_EXTRACTdata extraction

Structure Validation

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Entry History 

Revision History  (Full details and data files)

  • Version 1.0: 2007-05-15
    Type: Initial release
  • Version 1.1: 2007-10-15
    Changes: Version format compliance
  • Version 1.2: 2011-07-13
    Changes: Version format compliance
  • Version 1.3: 2017-10-18
    Changes: Refinement description
  • Version 1.4: 2023-08-30
    Changes: Data collection, Database references, Derived calculations, Refinement description