doi: 10.1073/pnas.76.12.6510.
Gene for the RNA polymerase sigma subunit mapped in Salmonella typhimurium and Escherichia coli by cloning and deletion
- PMID: 160566
- PMCID: PMC411895
- DOI: 10.1073/pnas.76.12.6510
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Gene for the RNA polymerase sigma subunit mapped in Salmonella typhimurium and Escherichia coli by cloning and deletion
Proc Natl Acad Sci U S A.
1979 Dec.
Abstract
The genes for the RNA polymerase sigma subunit (rpoD) and DNA primase (dnaG) of Salmonella typhimurium have been cloned into lambda vectors. Combined restriction, deletion and functional analysis of the cloned fragment allows us to map the genes precisely on the fragment, establishes the direction in which rpoD is transcribed, and reveals the existence of at least one new gene in the vicinity. A closely homologous, smaller fragment of Escherichia coli DNA, also cloned into lambda, contains rpoD and at least part of dnaG.
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