Information on EC 5.3.3.11 - isopiperitenone DELTA-isomerase

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The expected taxonomic range for this enzyme is: Mentha x piperita

EC NUMBER
COMMENTARY
5.3.3.11
-
RECOMMENDED NAME
GeneOntology No.
isopiperitenone DELTA-isomerase
REACTION
REACTION DIAGRAM
COMMENTARY
ORGANISM
UNIPROT ACCESSION NO.
LITERATURE
Isopiperitenone = piperitenone
show the reaction diagram
-
-
-
-
Isopiperitenone = piperitenone
show the reaction diagram
double bond migration catalyzed by this enzyme involves an intramolecular 1,3-hydrogen transfer
-
REACTION TYPE
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
intramolecular oxidoreduction
-
-
-
-
isomerization
-
-
-
-
SYSTEMATIC NAME
IUBMB Comments
isopiperitenone DELTA8-DELTA4-isomerase
Involved in the biosynthesis of menthol and related monoterpenes in peppermint (Mentha piperita) leaves.
SYNONYMS
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
Isomerase, isopiperitenone
-
-
-
-
Isopiperitenone isomerase
-
-
-
-
CAS REGISTRY NUMBER
COMMENTARY
96595-07-2
-
ORGANISM
COMMENTARY
LITERATURE
SEQUENCE CODE
SEQUENCE DB
SOURCE
SUBSTRATE
PRODUCT                      
REACTION DIAGRAM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
(Substrate)
LITERATURE
(Substrate)
COMMENTARY
(Product)
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
Isopiperitenone
Piperitenone
show the reaction diagram
-
-
-
-
Isopiperitenone
?
show the reaction diagram
-
key step in the metabolic pathway for the conversion of the initially formed cyclic olefin (+/-)-limonene, to (-)-menthol and related monoterpenes characteristic of peppermint
-
-
-
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
Isopiperitenone
?
show the reaction diagram
-
key step in the metabolic pathway for the conversion of the initially formed cyclic olefin (+/-)-limonene, to (-)-menthol and related monoterpenes characteristic of peppermint
-
-
-
INHIBITORS
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
IMAGE
p-hydroxymercuribenzoate
-
-
KM VALUE [mM]
KM VALUE [mM] Maximum
SUBSTRATE
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
IMAGE
0.27
-
isopiperitenone
-
-
pH OPTIMUM
pH MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
7.5
8.5
-
-
pH RANGE
pH RANGE MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
7
9
-
half-maximal activities at pH 7 and 9
SOURCE TISSUE
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
SOURCE
MOLECULAR WEIGHT
MOLECULAR WEIGHT MAXIMUM
ORGANISM
UNIPROT ACCESSION NO.
COMMENTARY
LITERATURE
54000
-
-
gel filtration
GENERAL STABILITY
ORGANISM
UNIPROT ACCESSION NO.
LITERATURE
stable to dialysis at pH 5.5-9.5
-
Purification/COMMENTARY
ORGANISM
UNIPROT ACCESSION NO.
LITERATURE