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  • Title: Structural basis for reduced activity of 1-aminocyclopropane-1-carboxylate synthase affected by a mutation linked to andromonoecy.
    Author: Schärer MA, Eliot AC, Grütter MG, Capitani G.
    Journal: FEBS Lett; 2011 Jan 03; 585(1):111-4. PubMed ID: 21075107.
    Abstract:
    1-aminocyclopropane-1-carboxylate synthase (ACS) is a key enzyme in the biosynthesis of the plant hormone ethylene. Recently, a new biological role for ACS has been found in Cucumis melo where a single point mutation (A57V) of one isoform of the enzyme, causing reduced activity, results in andromonoecious plants. We present here a straightforward structural basis for the reduced activity of the A57V mutant, based on our work on Malus domestica ACS, including a new structure of the unliganded apple enzyme at 1.35Å resolution.
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