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Your query returned 6 entries. 
Printable version
| EC | 3.2.1.172 | ||||||||
| Accepted name: | unsaturated rhamnogalacturonyl hydrolase | ||||||||
| Reaction: | 2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose + H2O = 5-dehydro-4-deoxy-D-glucuronate + L-rhamnopyranose | ||||||||
| For diagram of ramnosylgalacturan degradation, click here | |||||||||
| Glossary: | 6-deoxy-2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-mannopyranose = 2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose 5-dehydro-4-deoxy-D-glucuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate |
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| Other name(s): | YteR; YesR | ||||||||
| Systematic name: | 2-O-(4-deoxy-β-L-threo-hex-4-enopyranuronosyl)-α-L-rhamnopyranose hydrolase | ||||||||
| Comments: | The enzyme is part of the degradation system for rhamnogalacturonan I in Bacillus subtilis strain 168. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||||||||
| References: |
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| EC | 3.2.1.179 | ||||||||
| Accepted name: | gellan tetrasaccharide unsaturated glucuronosyl hydrolase | ||||||||
| Reaction: | β-D-4-deoxy-Δ4-GlcAp-(1→4)-β-D-Glcp-(1→4)-α-L-Rhap-(1→3)-D-Glcp + H2O = 5-dehydro-4-deoxy-D-glucuronate + β-D-Glcp-(1→4)-α-L-Rhap-(1→3)-D-Glcp | ||||||||
| Glossary: | 5-dehydro-4-deoxy-D-glucuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate β-D-4-deoxy-Δ4-GlcAp-(1→3)-D-GalNAc = 3-(4-deoxy-β-D-gluc-4-enuronosyl)-N-acetyl-D-galactosamine = 3-(4-deoxy-α-L-threo-hex-4-enopyranosyluronic acid)-2-acetamido-2-deoxy-D-galactose |
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| Other name(s): | UGL (ambiguous); unsaturated glucuronyl hydrolase (ambiguous); gellan tetrasaccharide unsaturated glucuronyl hydrolase | ||||||||
| Systematic name: | β-D-4-deoxy-Δ4-GlcAp-(1→4)-β-D-Glcp-(1→4)-α-L-Rhap-(1→3)-D-Glcp β-D-4-deoxy-Δ4-GlcAp hydrolase | ||||||||
| Comments: | The enzyme releases 4-deoxy-4(5)-unsaturated D-glucuronic acid from oligosaccharides produced by polysaccharide lyases, e.g. the tetrasaccharide β-D-4-deoxy-Δ4-GlcAp-(1→4)-β-D-Glcp-(1→4)-α-L-Rhap-(1→3)-D-Glcp produced by EC 4.2.2.25, gellan lyase. The enzyme can also hydrolyse unsaturated chondroitin and hyaluronate disaccharides (β-D-4-deoxy-Δ4-GlcAp-(1→3)-D-GalNAc, β-D-4-deoxy-Δ4-GlcAp-(1→3)-D-GalNAc6S, β-D-4-deoxy-Δ4-GlcAp2S-(1→3)-D-GalNAc, β-D-4-deoxy-Δ4-GlcAp-(1→3)-D-GlcNAc), preferring the unsulfated disaccharides to the sulfated disaccharides. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||||||||
| References: |
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| EC | 3.2.1.180 | ||||||||
| Accepted name: | unsaturated chondroitin disaccharide hydrolase | ||||||||
| Reaction: | β-D-4-deoxy-Δ4-GlcAp-(1→3)-β-D-GalNAc6S + H2O = 5-dehydro-4-deoxy-D-glucuronate + N-acetyl-β-D-galactosamine-6-O-sulfate | ||||||||
| Glossary: | 5-dehydro-4-deoxy-D-glucuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate | ||||||||
| Other name(s): | UGL (ambiguous); unsaturated glucuronyl hydrolase (ambiguous) | ||||||||
| Systematic name: | β-D-4-deoxy-Δ4-GlcAp-(1→3)-β-D-GalNAc6S hydrolase | ||||||||
| Comments: | The enzyme releases 4-deoxy-4,5-didehydro D-glucuronic acid or 4-deoxy-4,5-didehydro L-iduronic acid from chondroitin disaccharides, hyaluronan disaccharides and heparin disaccharides and cleaves both glycosidic (1→3) and (1→4) bonds. It prefers the sulfated disaccharides to the unsulfated disaccharides. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB | ||||||||
| References: |
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| EC | 4.2.2.6 | ||||||||
| Accepted name: | oligogalacturonide lyase | ||||||||
| Reaction: | 4-(4-deoxy-α-D-galact-4-enuronosyl)-D-galacturonate = 2 5-dehydro-4-deoxy-D-glucuronate | ||||||||
| Other name(s): | oligogalacturonate lyase; unsaturated oligogalacturonate transeliminase; OGTE | ||||||||
| Systematic name: | oligogalacturonide lyase | ||||||||
| Comments: | Also catalyses eliminative removal of unsaturated terminal residues from oligosaccharides of D-galacturonate. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 9031-33-8 | ||||||||
| References: |
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| EC | 4.2.99.25 | ||||||||
| Accepted name: | unsaturated pyranuronate lyase | ||||||||
| Reaction: | (1) 4-deoxy-L-erythro-hex-4-enopyranuronate = (4S,5S)-4,5-dihydroxy-2,6-dioxohexanoate (2) 4-deoxy-L-threo-hex-4-enopyranuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate |
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| Glossary: | 4-deoxy-L-erythro-hex-4-enopyranuronate = 4,5-unsaturated D-galacturonate 4-deoxy-L-threo-hex-4-enopyranuronate = 4,5-unsaturated D-mannuronate/L-guluronate (4S,5S)-4,5-dihydroxy-2,6-dioxohexanoate = 5-keto-4-deoxyuronate (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate = 5-dehydro-4-deoxy-D-glucuronate |
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| Other name(s): | kdgF (gene name) | ||||||||
| Systematic name: | 4,5-unsaturated pyranuronate lyase (ring-opening) | ||||||||
| Comments: | The enzyme, found in bacteria and archaea, is involved in the degradation of polysaccharides such as alginate and pectin. The enzyme catalyses a pyranose ring-opening reaction followed by enol-keto tautomerization. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||||||
| References: |
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| EC | 5.3.1.17 | ||||||||
| Accepted name: | 5-dehydro-4-deoxy-D-glucuronate isomerase | ||||||||
| Reaction: | 5-dehydro-4-deoxy-D-glucuronate = 3-deoxy-D-glycero-2,5-hexodiulosonate | ||||||||
| Glossary: | 5-dehydro-4-deoxy-D-glucuronate = (4S,5R)-4,5-dihydroxy-2,6-dioxohexanoate 3-deoxy-D-glycero-2,5-hexodiulosonate = (4S)-4,6-dihydroxy-2,5-dioxohexanoate |
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| Other name(s): | 4-deoxy-L-threo-5-hexulose uronate isomerase; 4-deoxy-L-threo-5-hexosulose-uronate ketol-isomerase; kduI (gene name) | ||||||||
| Systematic name: | 5-dehydro-4-deoxy-D-glucuronate aldose-ketose-isomerase | ||||||||
| Comments: | The enzyme is involved in the degradation of polygalacturonate, a later stage in the degradation of pectin by many microorganisms. | ||||||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc, PDB, CAS registry number: 37318-44-8 | ||||||||
| References: |
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