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PMID: 6287171 Published · ppublish English Journal Article Research Support, U.S. Gov't, P.H.S.

Discontinuity of homology of Escherichia coli and Salmonella typhimurium DNA in the lac region.

Molecular & general genetics : MGG ·Vol. 186 ·No. 1 ·1982-00-00 ·Pages 82-6

Lampel KA, Riley M

Abstract

Partial homology of Salmonella typhimurium DNA to Escherichia coli DNA was demonstrated by Southern hybridization blots to exist on either side of the lac operon of E. coli but no homology was detected between S. typhimurium DNA and about 12 kb of E. coli DNA including the lac genes as well as about 5 kb of E. coli DNA between lac and proC. Thus portions of DNA seem to have been either added to the E.coli genome or deleted from the S. typhimurium genome since their divergence from a common ancestor. Although an IS1 element was located near the lac operon of E. coli, the insertional element was shown not to be near any of the junctures of discontinuity of E. coli--S. typhimurium homology near lac.

MeSH Terms
Base Sequence DNA Restriction Enzymes Escherichia coli/genetics Genes, Bacterial Lac Operon Nucleic Acid Hybridization Plasmids Salmonella typhimurium/genetics
Chemicals
DNA Restriction Enzymes
Authors & Affiliations
2 authors, click to expand affiliations / ORCID
Lampel K A
Riley M
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22 references, click to expand
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Article Info
Journal
Molecular & general genetics : MGG
Abbr.
Mol Gen Genet
ISSN
0026-8925
DOI
10.1007/BF00422916
Published
1982-00-00
Pages
82-6
Language
English
Region
Germany
NLM ID
0125036
Subset
IM
Grants
NIGMS NIH HHS · GM-28926-01 · United States
External Links
PubMed source DOI: 10.1007/BF00422916
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