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Your query returned 2 entries. 
Printable version
| EC | 4.2.99.22 | ||||
| Accepted name: | tuliposide A-converting enzyme | ||||
| Reaction: | 6-tuliposide A = tulipalin A + D-glucose | ||||
| Glossary: | 6-tuliposide A = 6-O-(4-hydroxy-2-methylenebutanoyl)-D-glucose tulipalin A = 2-methylenebutanolactone |
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| Other name(s): | tuliposide-converting enzyme; 6-O-(4′-hydroxy-2′-methylenebutyryl)-D-glucose acyltransferase (lactone-forming); TCA; TCEA | ||||
| Systematic name: | 6-tuliposide A D-glucose-lyase (tulipalin-A-forming) | ||||
| Comments: | Isolated from the plant Tulipa gesneriana (tulip). The reaction is an intramolecular transesterification producing the lactone. The enzyme also has a weak activity with 6-tuliposide B and 6-O-benzoyl-D-glucose. | ||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||
| References: |
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| EC | 4.2.99.23 | ||||
| Accepted name: | tuliposide B-converting enzyme | ||||
| Reaction: | 6-tuliposide B = tulipalin B + D-glucose | ||||
| Glossary: | 6-tuliposide B = 6-O-[(3S)-3,4-dihydroxy-2-methylenebutanoyl]-D-glucose tulipalin B = (4S)-4-hydroxy-3-methylideneoxolan-2-one |
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| Systematic name: | 6-tuliposide B D-glucose-lyase (tulipalin B-forming) | ||||
| Comments: | The enzyme, characterized from pollen of the plant Tulipa gesneriana (tulip), catalyses the intramolecular transesterification of 6-tuliposide B to form the antibiotic aglycon tulipalin B as a sole product. It does not catalyse the hydrolysis of 6-tuliposide B to form a hydroxy acid. The enzyme has marginal activity with 6-tuliposide A. cf. EC 4.2.99.22, tuliposide A-converting enzyme. | ||||
| Links to other databases: | BRENDA, EXPASY, KEGG, MetaCyc | ||||
| References: |
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