The Enzyme Database

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EC 3.5.1.131     
Accepted name: 1-carboxybiuret hydrolase
Reaction: 1-carboxybiuret + H2O = urea-1,3-dicarboxylate + NH3
For diagram of atrazine catabolism, click here
Glossary: carboxybiuret = carbamoylcarbamoylcarbamic acid
Other name(s): atzEG (gene names)
Systematic name: 1-carboxybiuret amidohydrolase
Comments: The enzyme, characterized from the bacterium Pseudomonas sp. ADP, participates in the degradation of cyanuric acid, an intermediate in the degradation of s-triazine herbicides such as atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-1,3,5-triazine]. The enzyme is a heterotetramer composed of a catalytic subunit (AtzE) and an accessory subunit (AtzG) that stabilizes the complex.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Esquirol, L., Peat, T.S., Wilding, M., Liu, J.W., French, N.G., Hartley, C.J., Onagi, H., Nebl, T., Easton, C.J., Newman, J. and Scott, C. An unexpected vestigial protein complex reveals the evolutionary origins of an s-triazine catabolic enzyme. J. Biol. Chem. 293 (2018) 7880–7891. [PMID: 29523689]
[EC 3.5.1.131 created 2019]
 
 


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