Information on EC 2.4.1.167 - sucrose 6F-alpha-galactosyltransferase

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The expected taxonomic range for this enzyme is: Sesamum indicum

EC NUMBER
COMMENTARY hide
2.4.1.167
-
RECOMMENDED NAME
GeneOntology No.
sucrose 6F-alpha-galactosyltransferase
REACTION
REACTION DIAGRAM
COMMENTARY hide
ORGANISM
UNIPROT
LITERATURE
UDP-alpha-D-galactose + sucrose = UDP + 6F-alpha-D-galactosylsucrose
show the reaction diagram
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-
-
-
REACTION TYPE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
hexosyl group transfer
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-
-
-
SYSTEMATIC NAME
IUBMB Comments
UDP-galactose:sucrose 6F-alpha-D-galactosyltransferase
The enzyme is involved in the synthesis of the trisaccharide planteose and higher analogues in the seeds of Plantago and Sesamum species.
CAS REGISTRY NUMBER
COMMENTARY hide
92480-04-1
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ORGANISM
COMMENTARY hide
LITERATURE
UNIPROT
SEQUENCE DB
SOURCE
-
-
-
Manually annotated by BRENDA team
SUBSTRATE
PRODUCT                       
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
Reversibility
r=reversible
ir=irreversible
?=not specified
UDPgalactose + sucrose
UDP + 6F-alpha-galactosylsucrose
show the reaction diagram
-
-
i.e. planteose
?
additional information
?
-
-
probably involved in the biosynthesis of planteose in seeds
-
-
-
NATURAL SUBSTRATES
NATURAL PRODUCTS
REACTION DIAGRAM
ORGANISM
UNIPROT
COMMENTARY
(Substrate) hide
LITERATURE
(Substrate)
COMMENTARY
(Product) hide
LITERATURE
(Product)
REVERSIBILITY
r=reversible
ir=irreversible
?=not specified
UDPgalactose + sucrose
UDP + 6F-alpha-galactosylsucrose
show the reaction diagram
-
-
i.e. planteose
?
additional information
?
-
-
probably involved in the biosynthesis of planteose in seeds
-
-
-
METALS and IONS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
additional information
-
bivalent metal ions, e.g. Ca2+, Cu2+, Fe2+, Mg2+, Zn2+ have no effect
INHIBITORS
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
5'-UMP
-
10 mM: 55% inhibition, 1 mM: 34% inhibition
additional information
-
UDP, UDPglucose, glucose 1-phosphate, glucose, galactose 1-phosphate, galactose are not inhibitory up to 1 mM
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ACTIVATING COMPOUND
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
DTT
-
10 mM: increase of activity by about 30%
additional information
-
no requirement for a sulfhydryl reagent
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KM VALUE [mM]
SUBSTRATE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
IMAGE
3.6 - 6
Sucrose
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-
0.2 - 0.5
UDPgalactose
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-
pH OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
pH RANGE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
5 - 7
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30% of maximal activity at pH 5.0, 70% of maximal activity at pH 7.0
TEMPERATURE OPTIMUM
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
38
-
assay at
SOURCE TISSUE
ORGANISM
UNIPROT
COMMENTARY hide
LITERATURE
SOURCE
GENERAL STABILITY
ORGANISM
UNIPROT
LITERATURE
freezing and thawing have no effect
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STORAGE STABILITY
ORGANISM
UNIPROT
LITERATURE
-20°C, 6 months
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Purification/COMMENTARY
ORGANISM
UNIPROT
LITERATURE