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σ38 in Escherichia coli is required for expression of a subset of stationary phase genes. However, the promoter elements for σ38-dependent genes are virtually indistinguishable from that for σ70-dependent house-keeping genes. hdeAB p is a σ38-dependent promoter and LEE5 p is a σ70-dependent promoter, but both are repressed by H-NS, a bacterial histone-like...
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