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EC 2.4.1.85 Details
EC number
2.4.1.85
Accepted name
cyanohydrin β-glucosyltransferase
Reaction
UDP-α-D-glucose + (S)-4-hydroxymandelonitrile = UDP + (S)-4-hydroxymandelonitrile β-D-glucoside
Other name(s)
uridine diphosphoglucose-p-hydroxymandelonitrile glucosyltransferase, UDP-glucose-p-hydroxymandelonitrile glucosyltransferase, uridine diphosphoglucose-cyanohydrin glucosyltransferase, uridine diphosphoglucose:aldehyde cyanohydrin β-glucosyltransferase, UDP-glucose:(S)-4-hydroxymandelonitrile β-D-glucosyltransferase, UGT85B1, UDP-glucose:p-hydroxymandelonitrile-O-glucosyltransferase, UDP-D-glucose:(S)-4-hydroxymandelonitrile β-D-glucosyltransferase
Systematic name
UDP-α-D-glucose:(S)-4-hydroxymandelonitrile β-D-glucosyltransferase (configuration-inverting)
CAS registry number
55354-52-4
Comment
Acts on a wide range of substrates in vitro, including cyanohydrins, terpenoids, phenolics, hexanol derivatives and plant hormones, in a regiospecific manner [3]. This enzyme is involved in the biosynthesis of the cyanogenic glucoside dhurrin in sorghum, along with EC 1.14.14.36, tyrosine N-monooxygenase and EC 1.14.14.37, 4-hydroxyphenylacetaldehyde oxime monooxygenase. This reaction prevents the disocciation and release of toxic hydrogen cyanide [3].
History
created 1976, modified 2005
EC Tree
2.4.1.3 created 1961, deleted 1972
2.4.1.6 created 1961, deleted 1972
2.4.1.42 created 1972, deleted 1984
2.4.1.51 created 1972, deleted 1984
2.4.1.55 created 1972, deleted 1982
2.4.1.59 created 1972, deleted 1984
2.4.1.61 created 1972, deleted 1984
2.4.1.72 created 1972, deleted 1976
2.4.1.75 created 1976, deleted 2005
2.4.1.76 created 1976, deleted 1984
2.4.1.77 created 1976, deleted 1984
2.4.1.84 created 1976, deleted 1984
2.4.1.89 created 1976, deleted 1984
2.4.1.93 created 1976, deleted 2004
2.4.1.98 created 1980, deleted 1984
2.4.1.107 created 1983, deleted 1984
2.4.1.108 created 1983, deleted 1984
2.4.1.124 created 1984, deleted 2002
2.4.1.151 created 1984, deleted 2002
2.4.1.169 created 1989, deleted 2003
2.4.1.200 created 1992, deleted 2004
2.4.1.204 created 1992, deleted 2003
2.4.1.233 created 2004, deleted 2005