Accepted name: N-isopropylammelide isopropylaminohydrolase
Reaction: N-isopropylammelide + H2O = cyanuric acid + isopropylamine
Glossary: N-isopropylammelide = 2,4-dihydroxy-6-(isopropylamino)-1,3,5-triazine
cyanuric acid = s-triazine-2,4,6-triol
Other name(s): atzC (gene name)
Systematic name: N-isopropylammelide isopropylaminohydrolase
Comments: Requires Zn2+. This bacterial enzyme is involved in degradation of the herbicide atrazine. It can hydrolyse other N-substituted amino dihydroxy-s-triazine molecules, and prefers substrates with linear N-alkyl groups to those with branched alkyl groups.
1.  Sadowsky, M.J., Tong, Z., de Souza, M. and Wackett, L.P. AtzC is a new member of the amidohydrolase protein superfamily and is homologous to other atrazine-metabolizing enzymes. J. Bacteriol. 180 (1998) 152–158. [PMID: 9422605]
2.  Shapir, N., Osborne, J.P., Johnson, G., Sadowsky, M.J. and Wackett, L.P. Purification, substrate range, and metal center of AtzC: the N-isopropylammelide aminohydrolase involved in bacterial atrazine metabolism. J. Bacteriol. 184 (2002) 5376–5384. [PMID: 12218024]
3.  Balotra, S., Warden, A.C., Newman, J., Briggs, L.J., Scott, C. and Peat, T.S. X-ray structure and mutagenesis studies of the N-isopropylammelide isopropylaminohydrolase, AtzC. PLoS One 10:e0137700 (2015). [PMID: 26390431]
[EC created 2000 as EC, transferred 2016 to EC]