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Your query returned 2 entries. Printable version
EC | 1.1.3.50 | ||
Accepted name: | C-glycoside oxidase | ||
Reaction: | carminate + O2 = 3′-dehydrocarminate + H2O2 | ||
For diagram of carminate catabolism, click here | |||
Glossary: | carminate = 7-(β-D-glucopyranosyl)-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate | ||
Other name(s): | carA (gene name) | ||
Systematic name: | carminate:oxygen 3′-oxidoreductase (H2O2-forming) | ||
Comments: | A flavoprotein (FAD). This bacterial enzyme participates in degradation of certain C-glucosides by catalysing the oxidation of the hydroxyl group at position 3 of the glycose moiety. The enzyme was found active with assorted C-glycosides, such as carminate, mangiferin, and C6-glycosylated flavonoids, but not with D-glucose or C8-glycosylated flavonoids. | ||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||
References: |
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EC | 4.1.99.28 | ||
Accepted name: | 3′-dehydrocarminate deglycosidase | ||
Reaction: | 3′-dehydrocarminate = 1,5-anhydro-D-erythro-hex-1-en-3-ulose + kermesate | ||
For diagram of carminate catabolism, click here | |||
Glossary: | carminate = 7-(β-D-glucopyranosyl)-3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate kermesate = 3,5,6,8-tetrahydroxy-1-methyl-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate 1,5-anhydro-D-erythro-hex-1-en-3-ulose = (2R,3R)-3,5-dihydroxy-2-(hydroxymethyl)-2,3-dihydropyran-4-one |
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Other name(s): | carBC (gene names) | ||
Systematic name: | 3′-dehydrocarminate lyase (kermesate-forming) | ||
Comments: | Requires Mg2+. This enzyme, isolated from the bacterium Microbacterium 5-2b, participates in a carminate degradation pathway. Following the activity of EC 1.1.3.50, C-glycoside oxidase, it cleaves the C—C bond in 3′-dehydrocarminate. The sugar moiety is released lacking a hydroxyl at position 1, and containing a double bond between C-1 and C-2. The enzyme shows weak activity with other 3′-dehydro-C-glucosides. | ||
Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||
References: |
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