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EC 4.1.1.82 Details
EC number
4.1.1.82
Accepted name
phosphonopyruvate decarboxylase
Reaction
3-phosphonopyruvate = 2-phosphonoacetaldehyde + CO2
Other name(s)
3-phosphonopyruvate carboxy-lyase
Systematic name
3-phosphonopyruvate carboxy-lyase (2-phosphonoacetaldehyde-forming)
CAS registry number
151662-34-9
Comment
The enzyme catalyses a step in the biosynthetic pathway of 2-aminoethylphosphonate, a component of the capsular polysaccharide complex of Bacteroides fragilis. Requires thiamine diphosphate and Mg2+ as cofactors. The enzyme is activated by the divalent cations Mg2+, Ca2+ and Mn2+. Pyruvate and sulfopyruvate can also act as substrates, but more slowly. This enzyme drives the reaction catalysed by EC 5.4.2.9, phosphoenolpyruvate mutase, in the thermodynamically unfavourable direction of 3-phosphonopyruvate formation [2]. It is the initial step in all of the major biosynthetic pathways of phosphonate natural products [3].
History
created 2005
EC Tree
4.1.1.10 created 1961, deleted 1972
4.1.1.13 created 1961, deleted 1972
4.1.1.26 created 1961, deleted 1972
4.1.1.27 created 1961, deleted 1972