7-Oxo-24ξ(28)-dihydrocycloeucalenol, a potent inhibitor of plant sterol biosynthesis
作者:Alain Rahier、Paulette Schmitt、Pierre Benveniste
DOI:10.1016/0031-9422(82)83024-0
日期:1982.1
from higher plant cells catalyses the opening of the cyclopropane ring of cycloeucalenol yielding obtusifoliol. 7-Oxo-24ξ(28)-dihydrocycloeucalenol was not a substrate but behaved like a potent inhibitor of the isomerase. The inhibition was reversible and highly specific; the inhibitor needed the presence of the 7-oxo group, the cyclopropane ring and the absence of a 4β-methyl group to be active. Other
摘要 来自高等植物细胞的环桉油醇-钝叶醇异构酶催化环桉油醇的环丙烷环打开,产生钝叶醇。7-Oxo-24ξ(28)-dihydrocycloeucalenol 不是底物,但表现得像异构酶的有效抑制剂。这种抑制作用是可逆的且具有高度特异性;抑制剂需要存在 7-氧代基团、环丙烷环和不存在 4β-甲基基团才能起作用。7-oxo-24ξ(28)-dihydrocycloeucalenol 不会抑制其他参与植物甾醇生物合成的酶,如 2, 3-oxidosqualene-cycloartenol cyclase 和 S-adenosyl methionine cycloartenol C-24 甲基转移酶。