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EC 3.5.1.54 Details
EC number
3.5.1.54
Accepted name
allophanate hydrolase
Reaction
urea-1-carboxylate + H2O = 2 CO2 + 2 NH3
Other name(s)
allophanate lyase, AtzF, TrzF
Systematic name
urea-1-carboxylate amidohydrolase
CAS registry number
9076-72-6
Comment
Along with EC 3.5.2.15 (cyanuric acid amidohydrolase) and EC 3.5.1.84 (biuret amidohydrolase), this enzyme forms part of the cyanuric-acid metabolism pathway, which degrades s-triazide herbicides, such as atrazine [2-chloro-4-(ethylamino)-6-(isopropylamino)-1,3,5-triazine], in bacteria. The yeast enzyme (but not that from green algae) also catalyses the reaction of EC 6.3.4.6, urea carboxylase, thus bringing about the hydrolysis of urea to CO2 and NH3 in the presence of ATP and bicarbonate. The enzyme from Pseudomonas sp. strain ADP has a narrow substrate specificity, being unable to use the structurally analogous compounds urea, hydroxyurea or methylcarbamate as substrate [6].
History
created 1986, modified 2008
EC Tree
3.5.1.34 created 1972, deleted 1981
3.5.1.37 created 1972, deleted 1976
3.5.1.45 created 1978, deleted 1986
3.5.1.80 created 1999, deleted 2002