| Entry |
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| Name |
tuliposide B-converting enzyme
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| Class |
Lyases;
Carbon-oxygen lyases;
Other carbon-oxygen lyases
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| Sysname |
6-tuliposide B D-glucose-lyase (tulipalin B-forming)
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| Reaction(IUBMB) |
6-tuliposide B = tulipalin B + D-glucose [RN: R11215]
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| Reaction(KEGG) |
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| Substrate |
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| Product |
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| Comment |
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.
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| History |
EC 4.2.99.23 created 2016
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| Orthology |
| K20507 | tuliposide B-converting enzyme |
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| Reference |
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| Authors |
Nomura T, Murase T, Ogita S, Kato Y |
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| Title |
Molecular identification of tuliposide B-converting enzyme: a lactone-forming carboxylesterase from the pollen of tulip. |
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| Journal |
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| Sequence |
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| Other DBs |
| ExPASy - ENZYME nomenclature database: | 4.2.99.23 |
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