Abstract
A mutant requiring isoleucine and valine for growth, because of the absence of acetolactate synthase activity, has been isolated. At least one of three different genes (ilvG, ilvB, ilvI) is required for the expression of acetolactate synthase activity, thus suggesting the presence of three different acetolactate synthase isoenzymes.
MeSH terms
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Chromosome Mapping
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Escherichia coli / enzymology*
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Escherichia coli / growth & development
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Escherichia coli / metabolism
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Genes
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Isoenzymes / metabolism
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Isoleucine / metabolism
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Mutation*
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Oxo-Acid-Lyases / biosynthesis*
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Oxo-Acid-Lyases / metabolism
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Phenotype
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Transduction, Genetic
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Valine / metabolism
Substances
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Isoenzymes
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Isoleucine
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Oxo-Acid-Lyases
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Valine