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EC 4.2.1.128 Details
EC number
4.2.1.128
Accepted name
lupan-3β,20-diol synthase
Reaction
lupan-3β,20-diol = (3S)-2,3-epoxy-2,3-dihydrosqualene + H2O
Other name(s)
LUP1 (gene name)
Systematic name
(3S)-2,3-epoxy-2,3-dihydrosqualene hydro-lyase (lupan-3β,20-diol-forming)
Comment
The reaction occurs in the reverse direction. The recombinant enzyme from Arabidopsis thaliana gives a 1:1 mixture of lupeol and lupan-3β,20-diol with small amounts of β-amyrin, germanicol, taraxasterol and ψ-taraxasterol. See EC 5.4.99.41 (lupeol synthase).
History
created 2011
EC Tree
4.2.1.13 created 1961, deleted 2001
4.2.1.14 created 1961, deleted 2001
4.2.1.15 created 1961, deleted 1972
4.2.1.16 created 1961, deleted 2001
4.2.1.21 created 1961, deleted 1964
4.2.1.23 created 1961, deleted 1972
4.2.1.26 created 1965, deleted 2002
4.2.1.29 created 1965, deleted 2004
4.2.1.37 created 1972, deleted 1992
4.2.1.38 created 1972, deleted 2001
4.2.1.63 created 1972, deleted 1978
4.2.1.64 created 1972, deleted 1978
4.2.1.71 created 1978, modified 1989, modified 2000, deleted 2004
4.2.1.72 created 1978, deleted 2000
4.2.1.86 created 1989, deleted 2004
4.2.1.102 created 2001, deleted 2001