Abstract
An Escherichia coli mutant resistant to isoniazid (WG497) contained 0.6 μmole of extracellular pyridoxamine and pyridoxamine phosphate in the early stationary phase. A suppressed lysine mutant (AT1024) contained 1.4 μmoles of pyridoxal phosphate under the same conditions. The internal concentration of vitamin B6 was one-half of normal for AT1024 and increased fivefold for WG497.
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Selected References
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