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  • Title: Inhibition of 2,3-oxidosqualene: beta-amyrin-cyclase, S-adenosyl-L-methionine: cycloartenol C-24-methyltransferase and cycloeucalenol: obtusifoliol isomerase by rationally designed molecules containing a tertiary amine function.
    Author: Rahier A, Bouvier P, Cattel L, Narula A, Benveniste P.
    Journal: Biochem Soc Trans; 1983 Oct; 11(5):537-43. PubMed ID: 6642064.
    Abstract:
    25-Azacycloartanol (I), 2-aza-2-dihydrosqualene (II) and Tridemorph (2,6-dimethyl-N-tridecylmorpholine) (III) are potent inhibitors of higher plant sterol biosynthesis. The first two molecules have been designed using rational enzymological concepts. I, II and III were shown to inhibit the S-adenosyl-L-methionine: cycloartenol C-24-methyltransferase, the 2,3-oxidosqualene: beta-amyrin-cyclase and the cycloeucalenol: obtusifoliol isomerase, respectively. Inhibition was demonstrated either in vivo on bramble cell suspensions or in vitro on microsomes from maize seedlings. Each inhibitor has been shown to have a high affinity for its presumed enzymic target and only negligible inhibitory action on the other two enzymes. The applications of these results to further physiological studies are discussed.
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