CATH Classification

Domain Context

CATH Clusters

Superfamily 3.40.50.1100
Functional Family

Enzyme Information

3.5.99.7
1-aminocyclopropane-1-carboxylate deaminase.
based on mapping to UniProt O57809
1-aminocyclopropane-1-carboxylate + H(2)O = 2-oxobutanoate + NH(3).
-!- The enzyme, found in certain soil bacteria and fungi, catalyzes 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 spontaneous hydrolytic deamination. -!- The enzyme has been used to make fruit ripening dependent on externally added ethylene, as it removes the substrate for endogenous ethylene formation. -!- Formerly EC 4.1.99.4.

UniProtKB Entries (1)

O57809
1A1D_PYRHO
Pyrococcus horikoshii OT3
Putative 1-aminocyclopropane-1-carboxylate deaminase

PDB Structure

PDB 1J0A
External Links
Method X-RAY DIFFRACTION
Organism Escherichia
Primary Citation
Structural and enzymatic properties of 1-aminocyclopropane-1-carboxylate deaminase homologue from Pyrococcus horikoshii
Fujino, A., Ose, T., Yao, M., Tokiwano, T., Honma, M., Watanabe, N., Tanaka, I.
J.Mol.Biol.
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