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Gene Review:

ACO1 - 1-aminocyclopropane-1-carboxylate oxidase 1

Arabidopsis thaliana

Synonyms: ACC oxidase 1, ATACO1, F3P11.19, F3P11_19

Lasserre, E. et al., Woeste, K.E. et al.

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High impact information on ACO1

Measurements of the conversion of ACC to ethylene by intact seedlings indicated that the mutations did not affect conjugation of ACC or the activity of ACC oxidase, the final step of ethylene biosynthesis [1].
The other two genes (CM-ACO2, CM-ACO3) have only two introns, at positions identical to their counterparts in CM-ACO1 [2].
The predicted amino acid sequences of CM-ACO1 and CM-ACO3 are 77% to 81% identical to those encoded by the tomato and petunia genes, while the deduced amino acid sequence of CM-ACO2 shows only 42% to 45% homology [2].
The enzyme ACC oxidase catalyses the last step of ethylene biosynthesis in plants, converting 1-aminocyclopropane-1-carboxylic acid (ACC) to ethylene [2].
These three genes have close homology to PH-ACO3, a member of the ACC oxidase multigene family of petunia [2].

Associations of ACO1 with chemical compounds

CM-ACO1 is induced in ripe fruit and in response to wounding and to ethylene treatment in leaves [2].

References

Two Arabidopsis mutants that overproduce ethylene are affected in the posttranscriptional regulation of 1-aminocyclopropane-1-carboxylic acid synthase. Woeste, K.E., Ye, C., Kieber, J.J. Plant Physiol. (1999) [Pubmed]
Structure and expression of three genes encoding ACC oxidase homologs from melon (Cucumis melo L.). Lasserre, E., Bouquin, T., Hernandez, J.A., Bull, J., Pech, J.C., Balagué, C. Mol. Gen. Genet. (1996) [Pubmed]

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