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pubmed:abstractText |
We identified Mg2+-responsive promoters of the phoPQ, mgtA, and mgrB genes of Escherichia coli K-12 by S1 nuclease analysis. Expression of these genes was induced by magnesium limitation and depended on PhoP and PhoQ. The transcription start sites were also determined, which allowed us to find a (T/G)GTTTA direct repeat in their corresponding promoter regions.
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pubmed:affiliation |
Department of Agricultural Chemistry, Kinki University, 3327-204, Nakamachi, Nara 631-8505, Japan.
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