MetaCyc Enzyme: 1-aminocyclopropane-1-carboxylate oxidase

Gene: ACO Accession Number: G-11917 (MetaCyc)

Species: Cucumis melo

A cDNA clone was isolated from wounded fruit pericarp and leaf tissues of climateric and pre climateric Cucumis melo. The cDNA was recombinantly expressed in E.coli, purified and characterized. The encoded enzyme catalyzed the formation of ethylene [Balague93]. The protein showed 73-81% identity with tomato EFE (ethylene forming enzyme).

Molecular Weight of Polypeptide: 36.1 kD (from nucleotide sequence), 35.5 kD (experimental) [Balague93 ]

Unification Links: Entrez-Nucleotide:D31727 , Entrez:BAA06526 , Pride:Q04644 , Protein Model Portal:Q04644 , SMR:Q04644 , UniProt:Q04644

Relationship Links: InterPro:IN-FAMILY:IPR005123 , InterPro:IN-FAMILY:IPR026992 , InterPro:IN-FAMILY:IPR027443 , Pfam:IN-FAMILY:PF03171 , Pfam:IN-FAMILY:PF14226 , Prosite:IN-FAMILY:PS51471

Gene-Reaction Schematic: ?

Gene-Reaction Schematic

Created 25-Mar-2010 by Pujar A , Boyce Thompson Institute

Enzymatic reaction of: 1-aminocyclopropane-1-carboxylate oxidase

EC Number:

L-ascorbate + 1-aminocyclopropane-1-carboxylate + H+ + oxygen <=> ethylene + L-dehydro-ascorbate + hydrogen cyanide + CO2 + 2 H2O

The reaction direction shown, that is, A + B ↔ C + D versus C + D ↔ A + B, is in accordance with the direction in which it was curated.

The reaction is physiologically favored in the direction shown.

In Pathways: ethylene biosynthesis I (plants)


Balague93: Balague C, Watson CF, Turner AJ, Rouge P, Picton S, Pech JC, Grierson D (1993). "Isolation of a ripening and wound-induced cDNA from Cucumis melo L. encoding a protein with homology to the ethylene-forming enzyme." Eur J Biochem 212(1);27-34. PMID: 8444161

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Please cite the following article in publications resulting from the use of MetaCyc: Caspi et al, Nucleic Acids Research 42:D459-D471 2014
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