Nucleic Acids Research, 1984, Vol. 12, No. 13 5465-5470
© 1984
MOLECULAR BIOLOGY |
The wild-type nucleotide sequence of the rpoBC-attenuator region of Escherichia coli DNA, and its implications for the nature of the rifd18 mutation
Department of Molecular Biology, University of Edinburgh Mayfield Road, Edinburgh EH9 3JR, UK
Received April 9, 1984. Revised June 18, 1984. Accepted June 18, 1984.
To investigate the possibility that the unusual dominant rifampicin-resistance characteristic of the rifdl8 allele of E.coli rpoB is due to a secondary, regulatory mutation, we have determined the nucleotide sequence a 1.1 Kbp wild-type DNA fragment, including the transcriptional attenuator and translational start-site of rpoB. We have also re-investigated the previously published sequences of this region in rifdl8 and rifd47 DNA. Our results indicate that all three sequences are identical, and reveal somed errors in the published data. We discuss the basis of dominance of rifd18.
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