3.2.1.118: prunasin beta-glucosidase
This is an abbreviated version!
For detailed information about prunasin beta-glucosidase, go to the full flat file.
Reaction
Synonyms
beta-glucosidase, hydrolase, prunasin, PH I, PH IIa, PH IIb, Ph691, prunasin hydrolase, prunasin hydrolase isozyme I, prunasin hydrolase isozyme IIa, prunasin hydrolase isozyme IIb
ECTree
3.2.1.118 prunasin beta-glucosidaseAdvanced search results
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results (Substrates Products
Substrates Products on EC 3.2.1.118 - prunasin beta-glucosidase
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SUBSTRATE 
PRODUCT
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate)
(Substrate)
LITERATURE
(Substrate)
(Substrate)
COMMENTARY
(Product)
(Product)
LITERATURE
(Product)
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
r=reversible
ir=irreversible
?=not specified
(S)-sambunigrin + H2O
D-glucose + mandelonitrile
-
i.e. epimer of (R)-prunasin, poor substrate
-
-
?
2-nitrophenyl beta-D-glucopyranoside + H2O
2-nitrophenol + D-glucose
-
very effective substrate
-
-
?
4-nitrophenyl beta-D-galactopyranoside + H2O
4-nitrophenol + D-galactose
-
poor substrate
-
-
?
4-nitrophenyl beta-D-glucopyranoside + H2O
4-nitrophenol + D-glucose
-
-
-
-
?
additional information
?
-
-
no substrates are (R)-amygdalin, linamarin, (neo)linustatin, 4-nitrophenyl-alpha-D-glucopyranoside, 4-nitrophenyl-beta-D-mannoside, 4-nitrophenyl-alpha-D-mannoside, 4-nitrophenyl-beta-D-xyloside and (S)-dhurrin
-
-
?
(R)-prunasin + H2O
D-glucose + mandelonitrile
-
slow reaction
-
?
(R)-prunasin + H2O
D-glucose + mandelonitrile
-
slow reaction
-
?
(R)-prunasin + H2O
D-glucose + mandelonitrile
-
in the sweet genotype Ramillete, amygdalin formation is prevented because the prunasin is degraded upon passage of the beta-glucosidase rich cell layer in the inner epidermis of the tegument
-
-
?
(R)-prunasin + H2O
D-glucose + mandelonitrile
the enzyme is involved in the metabolic pathway for the synthesis and catabolism of the cyanogenic glucoside prunasin
-
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
(R)-prunasin + H2O
mandelonitrile + D-glucose
-
involved in cyanogenesis from (R)-amygdalin
-
?
prunasin + H2O
D-mandelonitrile + beta-D-glucose
-
prunasin is taken up in the small intestine and decomposed by beta-glucosidase into glucose and mandelonitrile, which is further hydrolyzed to benzaldehyde and hydrogen cyanide. Amygdalin, the precursor of prunasin, is a toxic component and can cause fatal cyanide poisonings, chronic toxicity, and death
-
-
?
prunasin + H2O
D-mandelonitrile + beta-D-glucose
-
substrate and product determination in the in vitro system by mass spectrometry, method, overview
-
-
?
