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The expected taxonomic range for this enzyme is: Saccharomyces cerevisiae
Synonyms
5alpha-Hydroxysterol dehydase, Dehydratase, 5alpha-hydroxysterol,
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5alpha-Hydroxysterol dehydase
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Dehydratase, 5alpha-hydroxysterol
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5alpha-Ergosta-7,22-diene-3beta,5-diol = ergosterol + H2O
5alpha-Ergosta-7,22-diene-3beta,5-diol = ergosterol + H2O
mechanism
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5alpha-Ergosta-7,22-diene-3beta,5-diol = ergosterol + H2O
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5alpha-ergosta-7,22-diene-3beta,5-diol 5,6-hydro-lyase (ergosterol-forming)
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5alpha,8alpha-Epidioxyergosta-6,22-diene-3beta-ol
Ergosterol + H2O
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5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
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sterol biosynthesis
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5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
Ergosterol + H2O
5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
Ergosterol + H2O
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5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
Ergosterol + H2O
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5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
Ergosterol + H2O
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5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
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sterol biosynthesis
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additional information
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no requirement
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additional information
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no requirement
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additional information
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no requirement
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0.17
5alpha-Ergosta-7,22-diene-3beta,5alpha-diol
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brenda
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brenda
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brenda
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side-chain modification
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phospholipid associated with active enzyme, removal by digestion with phospholipase A does not reduce the activity
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-20°C, 0.4 M potassium phosphate buffer, pH 7.4, 10 mM 2-mercaptoethanol, 2 weeks, no loss of activity
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Topham, R.W.; Gaylor, J.L.
Isolation and purification of 5alpha-hydroxysterol dehydrase of yeast
J. Biol. Chem.
245
2319-2327
1970
Saccharomyces cerevisiae
brenda
Topham, R.W.; Gaylor, J.L.
Further characterization of the 5alpha-hydroxysterol dehydrase of yeast
Biochem. Biophys. Res. Commun.
47
180-186
1972
Saccharomyces cerevisiae
brenda
Topham, R.W.; Gaylor, J.L.
Anaerobic formation of ergosterol from a 5alpha-hydroxysterol by cell-free preparations of yeast
Biochem. Biophys. Res. Commun.
27
644-649
1967
Saccharomyces cerevisiae
brenda
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4.2.1.62 5alpha-Hydroxysteroid dehydratase
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