Genetic dissection of the transcription cycle. A mutant RNA polymerase that cannot hold onto a promoter.

Abstract

Deletion of 10 amino acids from a conserved motif in the beta subunit of Escherichia coli RNA polymerase (RNAP) leads to an interrupted transcription cycle and lethal phenotype. RNAP carrying the mutant subunit retains catalytic function and specificity of promoter recognition but is unable to efficiently hold onto DNA in the binary complex, resulting in a… (More)

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