4.1.3.B3: 4-carboxy-4-hydroxy-2-oxoadipate aldolase
This is an abbreviated version!
For detailed information about 4-carboxy-4-hydroxy-2-oxoadipate aldolase, go to the full flat file.
Reaction
Synonyms
4-carboxy-4-hydroxy-2-oxoadipate aldolase/oxaloacetate decarboxylase, 4-hydroxy-4-methyl-2-oxoglutarate/4-carboxy-4-hydroxy-2-oxoadipate aldolase, CHA aldolase, HMG/CHA aldolase, PmdF
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Substrates Products
Substrates Products on EC 4.1.3.B3 - 4-carboxy-4-hydroxy-2-oxoadipate aldolase
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REACTION DIAGRAM
oxaloacetate + pyruvate
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4-carboxy-4-hydroxy-2-oxoadipate
oxaloacetate + pyruvate
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the bifunctional enzyme PmdF shows obvious aldolase activity when 4-carboxy-4-hydroxy-2-oxoadipate is used as substrate and obvious oxalacetate decarboxylase activity when oxaloacetate is used as substrate
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additional information
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the bifunctional enzyme PmdF shows obvious aldolase activity when 4-carboxy-4-hydroxy-2-oxoadipate is used as substrate and obvious oxalacetate decarboxylase activity when oxaloacetate is used as substrate
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additional information
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the enzyme is a class II, divalent metal ion-dependent, pyruvate aldolase that catalyzes the aldol cleavage of 4-hydroxy-4-methyl-2-oxoglutarate and 4-carboxy-4-hydroxy-2-oxoadipate into two molecules of pyruvate in the former and a molecule of each pyruvate and oxaloacetate in the latter, cf. EC 4.1.3.17. The enzyme also contains a secondary oxaloacetate decarboxylase activity due to the common pyruvate enolate transition state formed following C-C bond cleavage in the retroaldol and decarboxylase reactions
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