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EC 3.1.1.57 Details
EC number
3.1.1.57
Accepted name
2-pyrone-4,6-dicarboxylate lactonase
Reaction
2-oxo-2H-pyran-4,6-dicarboxylate + H2O = (1E)-4-oxobut-1-ene-1,2,4-tricarboxylate
Other name(s)
2-pyrone-4,6-dicarboxylate hydrolase, 2-pyrone-4,6-dicarboxylate lactonohydrolase
Systematic name
2-oxo-2H-pyran-4,6-dicarboxylate lactonohydrolase
CAS registry number
84177-55-9
Comment
The product is most likely the keto-form of 4-oxalomesaconate (as shown in the reaction) [1,2]. It can be converted to the enol-form, 4-hydroxybuta-1,3-diene-1,2,4-trioate, either spontaneously or by EC 5.3.2.8, 4-oxalomesaconate tautomerase [3].
History
created 1986, modified 2010
EC Tree
3.1.1.9 created 1961, deleted 1972
3.1.1.12 created 1961, deleted 1972
3.1.1.16 created 1961, deleted 1972
3.1.1.18 created 1961, deleted 1982
3.1.1.62 created 1989, deleted 1992
3.1.1.69 created 1992, deleted 2002