Home     Browse     Genes     Families and HMMs     Pathways     Ontologies     Tools     Workspace  
  Search Families     Download HMMs  
 
PANTHER Family Information   
Family: N-HYDROXYARYLAMINE O-ACETYLTRANSFERASE (PTHR11786)
Subfamilies: 1
PANTHER Links:
Tree  Multiple Sequence Alignment
Tree  MSA
Abstract:

Arylamine N-acetyltransferase (NAT) is a cytosolic enzyme of approximately 30 kDa. It facilitates the transfer of an acetyl group from acetyl coenzyme A on to a wide range of arylamine, N-hydroxyarylamines and hydrazines. Acetylation of these compounds generally results in inactivation. NAT is found in many species from Mycobacteria (Mycobacterium tuberculosis, Mycobacterium smegmatis etc) to Homo sapiens. It was the first enzyme to be observed to have polymorphic activity amongst human individuals. NAT is responsible for the inactivation of Isoniazid (a drug used to treat tuberculosis) in humans. The NAT protein has also been shown to be involved in the breakdown of folic acid. NAT catalyses the reaction:

Acetyl-coA + arylamine = coA + N-acetylarylamine

NAT is the target of a common genetic polymorphism of clinical relevance in humans. The N-acetylation polymorphism is determined by low or high NAT activity in liver. NAT has been implicated in the action and toxicity of amine-containing drugs, and in the susceptibility to cancer and systematic lupus erythematosus. Two highly similar human genes for NAT, termed NAT1 and NAT2, encode genetically invariant and variant NAT proteins, respectively.


InterPro Accession: IPR001447
PANTHER Molecular Function: Transferase
   Acetyltransferase

PANTHER Biological Process: Other metabolism

Pathway Categories: No pathway information available
Training Sequences: 33
HMM Length 299
Downloads: HMM (HMMER format)

Genes assigned to this Family
  Total Celera NCBI
H. sapiens 5 3 2
M. musculus 6 3 3
R. norvegicus 7 4 3
About   |   Contact Us   |   System Requirements   |   Privacy Policy   |   Disclaimer
© Copyright 2007 SRI International. All Rights Reserved.