Many bacterial species recognize the amino acid tryptophan and its transfer RNA as a regulatory signal responsible for tryptophan biosynthesis. In September 14 Science, Angela Valbuzzi and Charles Yanofsky from the Department of Biological Sciences, Stanford University determined that, in addition to sensing the amount of tryptophan present, Bacillus subtilis also has a mechanism for detecting the concentration of tryptophan-specific tRNA.Valbuzzi & Yanofsky discovered that if the amount of
Many bacterial species recognize the amino acid tryptophan and its transfer RNA as a regulatory signal responsible for tryptophan biosynthesis. In September 14
Valbuzzi & Yanofsky discovered that if the amount of tryptophan-laden tRNA is low, a subset of
The mechanisms of regulation of expression of the genes of tryptophan biosynthesis in B. subtilis differ considerably from those used for instance by Escherichia coli, but ...
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