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EC 3.5.99.10 Details
EC number
3.5.99.10
Accepted name
2-iminobutanoate/2-iminopropanoate deaminase
Reaction
(1) 2-iminobutanoate + H2O = 2-oxobutanoate + NH3;;(2) 2-iminopropanoate + H2O = pyruvate + NH3
Other name(s)
yjgF (gene name), ridA (gene name), enamine/imine deaminase (ambiguous)
Systematic name
2-iminobutanoate aminohydrolase
Comment
This enzyme, which has been found in all species and tissues examined, catalyses the hydrolytic deamination of imine intermediates formed by several types of pyridoxal-5′-phosphate-dependent dehydratases, such as EC 4.3.1.19, threonine ammonia-lyase and EC 4.3.1.17, L-serine ammonia-lyase. The reactions, which can occur spontaneously, are accelerated to minimize the cellular damage that could be caused by these reactive intermediates.
History
created 2014
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EC Tree
1 Oxidoreductases
1.1 Acting on the CH-OH group of donors
1.2 Acting on the aldehyde or oxo group of donors
1.3 Acting on the CH-CH group of donors
1.4 Acting on the CH-NH2 group of donors
1.5 Acting on the CH-NH group of donors
1.6 Acting on NADH or NADPH
1.7 Acting on other nitrogenous compounds as donors
1.8 Acting on a sulfur group of donors
1.9 Acting on a heme group of donors
1.10 Acting on diphenols and related substances as donors
1.11 Acting on a peroxide as acceptor
1.12 Acting on hydrogen as donor
1.13 Acting on single donors with incorporation of molecular oxygen (oxygenases)
1.14 Acting on paired donors, with incorporation or reduction of molecular oxygen
1.14.1 With NADH or NADPH as one donor (deleted sub-subclass)
1.14.2 With ascorbate as one donor (deleted sub-subclass)
1.14.3 With reduced pteridine as one donor (deleted sub-subclass)
1.14.11 With 2-oxoglutarate as one donor, and incorporation of one atom of oxygen into each donor
1.14.12 With NADH or NADPH as one donor, and incorporation of two atoms of oxygen into the other donor
1.14.13 With NADH or NADPH as one donor, and incorporation of one atom of oxygen into the other donor
1.14.14 With reduced flavin or flavoprotein as one donor, and incorporation of one atom of oxygen into the other donor
1.14.15 With reduced iron-sulfur protein as one donor, and incorporation of one atom of oxygen into the other donor
1.14.16 With reduced pteridine as one donor, and incorporation of one atom of oxygen into the other donor
1.14.17 With reduced ascorbate as one donor, and incorporation of one atom of oxygen into the other donor
1.14.18 With another compound as one donor, and incorporation of one atom of oxygen into the other donor
1.14.19 With oxidation of a pair of donors resulting in the reduction of O2 to two molecules of water
1.14.20 With 2-oxoglutarate as one donor, and the other dehydrogenated
1.14.21 With NADH or NADPH as one donor, and the other dehydrogenated
1.14.99 Miscellaneous
1.15 Acting on superoxide as acceptor
1.16 Oxidizing metal ions
1.17 Acting on CH or CH2 groups
1.18 Acting on iron-sulfur proteins as donors
1.19 Acting on reduced flavodoxin as donor
1.20 Acting on phosphorus or arsenic in donors
1.21 Catalysing the reaction X-H + Y-H = X-Y
1.21.1 With NAD+ or NADP+ as acceptor
1.21.3 With oxygen as acceptor
1.21.4 With a disulfide as acceptor
1.21.98 With other, known, physiological acceptors
1.21.99 With unknown physiological acceptors
1.22 Acting on halogen in donors
1.23 Reducing C-O-C group as acceptor
1.97 Other oxidoreductases
1.98 Enzymes using H2 as reductant (deleted subclass)
1.99 Other enzymes using O2 as oxidant (deleted subclass)
2 Transferases
3 Hydrolases
3.1 Acting on ester bonds
3.2 Glycosylases
3.3 Acting on ether bonds
3.4 Acting on peptide bonds (peptidases)
3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
3.5.1 In linear amides
3.5.2 In cyclic amides
3.5.3 In linear amidines
3.5.4 In cyclic amidines
3.5.5 In nitriles
3.5.99 In other compounds
3.5.99.1 riboflavinase
3.5.99.2 aminopyrimidine aminohydrolase
3.5.99.3 hydroxydechloroatrazine ethylaminohydrolase
3.5.99.4 N-isopropylammelide isopropylaminohydrolase
3.5.99.5 2-aminomuconate deaminase
3.5.99.6 glucosamine-6-phosphate deaminase
3.5.99.7 1-aminocyclopropane-1-carboxylate deaminase
3.5.99.8 5-nitroanthranilic acid aminohydrolase
3.5.99.9 2-nitroimidazole nitrohydrolase
3.5.99.10 2-iminobutanoate/2-iminopropanoate deaminase
3.5.99.11 2-aminomuconate deaminase (2-hydroxymuconate-forming)
3.6 Acting on acid anhydrides
3.7 Acting on carbon-carbon bonds
3.8 Acting on halide bonds
3.9 Acting on phosphorus-nitrogen bonds
3.10 Acting on sulfur-nitrogen bonds
3.10.1 Acting on sulfur-nitrogen bonds (only sub-subclass identified to date)
3.11 Acting on carbon-phosphorus bonds
3.12 Acting on sulfur-sulfur bonds
3.13 Acting on carbon-sulfur bonds
4 Lyases
5 Isomerases
6 Ligases
7 Translocases