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Literature summary for 3.2.1.118 extracted from

  • Li, C.P.; Swain, E.; Poulton, J.E.
    Prunus serotina amygdalin hydrolase and prunasin hydrolase. Purification, N-terminal sequencing, and antibody production (1992), Plant Physiol., 100, 282-290.
    View publication on PubMedView publication on EuropePMC

Molecular Weight [Da]

Molecular Weight [Da] Molecular Weight Maximum [Da] Comment Organism
68000
-
PH IIb and PH I, native PAGE Prunus serotina
69500
-
PH IIa, native PAGE Prunus serotina
140000
-
PH IIa, native PAGE Prunus serotina

Natural Substrates/ Products (Substrates)

Natural Substrates Organism Comment (Nat. Sub.) Natural Products Comment (Nat. Pro.) Rev. Reac.
(R)-prunasin + H2O Prunus serotina involved in cyanogenesis from (R)-amygdalin mandelonitrile + D-glucose
-
?

Organism

Organism UniProt Comment Textmining
Prunus serotina
-
-
-

Posttranslational Modification

Posttranslational Modification Comment Organism
glycoprotein
-
Prunus serotina

Purification (Commentary)

Purification (Comment) Organism
-
Prunus serotina

Reaction

Reaction Comment Organism Reaction ID
(R)-prunasin + H2O = D-glucose + mandelonitrile three isoforms found, PH I, PH IIa, PH IIb Prunus serotina

Source Tissue

Source Tissue Comment Organism Textmining
seed
-
Prunus serotina
-

Specific Activity [micromol/min/mg]

Specific Activity Minimum [µmol/min/mg] Specific Activity Maximum [µmol/min/mg] Comment Organism
2.8
-
purified PH I Prunus serotina
4.9
-
purified PH II Prunus serotina

Storage Stability

Storage Stability Organism
-20°C lyophylized powder Prunus serotina

Substrates and Products (Substrate)

Substrates Comment Substrates Organism Products Comment (Products) Rev. Reac.
(R)-prunasin + H2O
-
Prunus serotina D-glucose + mandelonitrile
-
?
(R)-prunasin + H2O involved in cyanogenesis from (R)-amygdalin Prunus serotina mandelonitrile + D-glucose
-
?

Subunits

Subunits Comment Organism
dimer 2 * 69500, SDS-PAGE Prunus serotina
monomer 1 * 68000, SDS-PAGE, PH I and PH IIb Prunus serotina