Information on EC 3.2.1.66 - quercitrinase

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The expected taxonomic range for this enzyme is: Aspergillus flavus

EC NUMBER
COMMENTARY
3.2.1.66
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RECOMMENDED NAME
GeneOntology No.
quercitrinase
REACTION
REACTION DIAGRAM
COMMENTARY
ORGANISM
UNIPROT ACCESSION NO.
LITERATURE
quercitrin + H2O = L-rhamnose + quercetin
show the reaction diagram
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REACTION TYPE
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
hydrolysis of O-glycosyl bond
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SYSTEMATIC NAME
IUBMB Comments
quercitrin 3-L-rhamnohydrolase
Quercitrin is quercetin 3-L-rhamnoside.
CAS REGISTRY NUMBER
COMMENTARY
37288-47-4
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ORGANISM
COMMENTARY
LITERATURE
SEQUENCE CODE
SEQUENCE DB
SOURCE
synthesized by only a few members of the Aspergillus flavus group
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Manually annotated by BRENDA team
SUBSTRATE
PRODUCT                      
REACTION DIAGRAM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
(Substrate)
LITERATURE
(Substrate)
COMMENTARY
(Product)
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
myricitrin + H2O
L-rhamnose + myricetin
show the reaction diagram
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myricitrin is identical with myricetin-3-L-rhamnoside
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?
quercitrin + H2O
quercetin + L-rhamnose
show the reaction diagram
-
quercitrin is identical with quercetin-3-L-rhamnoside, quercitrin is identical with quercetin 3-L-rhamnoside, growth on quercitrin as carbon source
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?
robinin + H2O
rhamnose + kaempferol-3-robinoside
show the reaction diagram
-
robinin is identical with kaempferol-3-robinoside-7-rhamnoside
-
?
NATURAL SUBSTRATES
NATURAL PRODUCTS
REACTION DIAGRAM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
(Substrate)
LITERATURE
(Substrate)
COMMENTARY
(Product)
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
quercitrin + H2O
quercetin + L-rhamnose
show the reaction diagram
-
quercitrin is identical with quercetin 3-L-rhamnoside, growth on quercitrin as carbon source
-
?
pH OPTIMUM
pH MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
pH RANGE
pH RANGE MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
SOURCE TISSUE
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
SOURCE
LOCALIZATION
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
GeneOntology No.
LITERATURE
SOURCE
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78% of the total activity
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Manually annotated by BRENDA team
TEMPERATURE STABILITY
TEMPERATURE STABILITY MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
35
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stable above
STORAGE STABILITY
ORGANISM
UNIPROT ACCESSION NO.
LITERATURE
-17°C, several weeks, little loss of activity
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