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Information on EC 5.4.99.54 - beta-seco-amyrin synthase for references in articles please use BRENDA:EC5.4.99.54Please wait a moment until all data is loaded. This message will disappear when all data is loaded.
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The expected taxonomic range for this enzyme is: Arabidopsis thaliana
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beta-seco-amyrin synthase
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(3S)-2,3-epoxy-2,3-dihydrosqualene = beta-seco-amyrin
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Sesquiterpenoid and triterpenoid biosynthesis
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(3S)-2,3-epoxy-2,3-dihydrosqualene mutase (cyclizing, beta-seco-amyrin-forming)
The enzyme from Arabidopsis thaliana is multifunctional and produces about equal amounts of alpha- and beta-seco-amyrin. See EC 5.4.99.52, alpha-seco-amyrin synthase.
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(3S)-2,3-epoxy-2,3-dihydrosqualene
beta-seco-amyrin
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beta-seco-amyrin is produced from the oleanyl cation through bond cleavage between C8 and C14
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expressed in a lanosterol synthase-deficient Saccharomyces cerevisiae strain GIL77
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PEN6_ARATH
767
88447
Swiss-Prot
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Shibuya, M.; Xiang, T.; Katsube, Y.; Otsuka, M.; Zhang, H.; Ebizuka, Y.
Origin of structural diversity in natural triterpenes: direct synthesis of seco-triterpene skeletons by oxidosqualene cyclase
J. Am. Chem. Soc.
129
1450-1455
2007
Arabidopsis thaliana
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