4.2.2.6: oligogalacturonide lyase
This is an abbreviated version!
For detailed information about oligogalacturonide lyase, go to the full flat file.
Word Map on EC 4.2.2.6
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4.2.2.6
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pectate
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erwinia
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chrysanthemi
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lyases
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digalacturonate
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pectic
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polygalacturonate
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pectinolytic
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2-keto-3-deoxygluconate
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exopolygalacturonate
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subsite
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pectinases
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methylesterase
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macer
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nonreducing
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4,5-unsaturated
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carotovora
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catabolite
- 4.2.2.6
- pectate
-
erwinia
- chrysanthemi
- lyases
- digalacturonate
-
pectic
- polygalacturonate
-
pectinolytic
- 2-keto-3-deoxygluconate
-
exopolygalacturonate
-
subsite
- pectinases
-
methylesterase
-
macer
-
nonreducing
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4,5-unsaturated
- carotovora
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catabolite
Reaction
= 2 5-dehydro-4-deoxy-D-glucuronate
Synonyms
lyase, oligogalacturonide, Ogl, OGTE, oligogalacturonan lyase, oligogalacturonate lyase, oligogalacturonide trans-eliminase, oligogalacturonide transeliminase, unsaturated oligogalacturonate transeliminase, YeOGL
ECTree
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Substrates Products
Substrates Products on EC 4.2.2.6 - oligogalacturonide lyase
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REACTION DIAGRAM
3-methyl-tri-D-galacturonate
?
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best substrate, alpha-(1-4)-linked
-
?
4-O-(4-deoxy-alpha-L-threo-hex-4-enopyranuronosyl)-beta-D-galactopyranuronic acid
4-deoxy-alpha-L-threo-hex-4-enopyranuronic acid + D-galacturonic acid
Erwinia aroidea
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i.e. O-(4-deoxy-beta-L-5-threo-hexopyranos-4-enyluronic acid)-(1,4)-D-galacturonic acid
-
?
acid-soluble pectic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
acid-soluble pectic acid
4-deoxy-5-keto-D-glucuronic acid
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very slow degradation
-
?
DELTA4,5-unsaturated di-D-galacturonate
?
-
alpha-(1-4)-linked
-
?
DELTA4,5-unsaturated tri-D-galacturonate
?
-
alpha-(1-4)-linked
-
?
digalacturonic acid
4-deoxy-5-keto-D-glucuronic acid + galacturonic acid
-
-
-
?
tetragalacturonic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
trigalacturonic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
trigalacturonic acid
4-deoxy-5-keto-D-glucuronic acid + digalacturonic acid + galacturonic acid
-
-
-
?
unsaturated digalacturonic acid
4-deoxy-5-keto-D-glucuronic acid + ?
-
-
-
?
unsaturated trigalacturonic acid
4-deoxy-5-keto-D-glucuronic acid + unsaturated digalacturonic acid
-
-
-
?
2 5-dehydro-4-deoxy-D-glucuronate
-
-
-
?
4-(4-deoxy-alpha-D-gluc-4-enuronosyl)-D-galacturonate
2 5-dehydro-4-deoxy-D-glucuronate
-
-
-
?
digalacturonic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
-
-
?
unsaturated digalacturonic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
unsaturated oligogalacturonates are degraded more rapidly than oligogalacturonates having no unsaturated galacturonic acid residues
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
-
-
-
?
unsaturated trigalacturonic acid
4-deoxy-5-keto-D-fructuronic acid + ?
Erwinia aroidea
-
unsaturated oligogalacturonates are degraded more rapidly than oligogalacturonates having no unsaturated galacturonic acid residues
the first product is 4,5-unsaturated galacturonic acid and this compound is converted into 4-deoxy-5-keto-D-fructuronic acid by an unknown mechanism
?
?
-
-
no activity with 2-methyl-di-G-galacturonate and 2-methyl-tri-G-galacturonate
-
?
additional information
?
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Erwinia aroidea
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two pathways are involved in metabolism of pectic substances: one route through galacturonic acid, involving galacturonic acid isomerase and the other through unsaturated digalacturonic acid, involving EC 4.2.2.5, with the formation of 4-deoxy-5-hexosulose uronic acid. Both pathways yield 2-keto-3-deoxy-D-gluconic acid as common product
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-
?