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3.5.99.7: 1-aminocyclopropane-1-carboxylate deaminase

This is an abbreviated version!
For detailed information about 1-aminocyclopropane-1-carboxylate deaminase, go to the full flat file.

Word Map on EC 3.5.99.7

Reaction

1-aminocyclopropane-1-carboxylate
+
H2O
=
2-oxobutanoate
+
NH3

Synonyms

1-aminocyclopropane-1-carboxylate deaminase, 1-aminocyclopropane-1-carboxylate endolyase (deaminating), 1-aminocyclopropane-1-carboxylic acid deaminase, 1-aminocyclopropane-1-carboxylic acid-deaminase, ACC deaminase, ACC-deaminase, ACCD, ACD, AcdS, ACPC deaminase, AMETH_2787, aspB, BC_3216, DA46_1949, deaminase, 1-aminocyclopropane-1-carboxylate, EC 4.1.99.4, More, PST_1815

ECTree

     3 Hydrolases
         3.5 Acting on carbon-nitrogen bonds, other than peptide bonds
             3.5.99 In other compounds
                3.5.99.7 1-aminocyclopropane-1-carboxylate deaminase

Systematic Name

Systematic Name on EC 3.5.99.7 - 1-aminocyclopropane-1-carboxylate deaminase

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SYSTEMATIC NAME
IUBMB Comments
1-aminocyclopropane-1-carboxylate aminohydrolase (isomerizing)
A pyridoxal 5'-phosphate enzyme. The enzyme, found in certain soil bacteria and fungi, catalyses the ring opening of 1-aminocyclopropane-1-carboxylate, the immediate precursor to ethylene, an important plant hormone that regulates fruit ripening and other processes. The enzyme releases an unstable enamine product that tautomerizes to an imine form, which undergoes a hydrolytic deamination. The latter reaction, which can occur spontaneously, can also be catalysed by EC 3.5.99.10, 2-iminobutanoate/2-iminopropanoate deaminase. The enzyme has been used to make fruit ripening dependent on externally added ethylene, as it removes the substrate for endogenous ethylene formation.