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. 1982 Nov;152(2):924–927. doi: 10.1128/jb.152.2.924-927.1982

Expression of the transposable lac operon Tn951 in Rhodopseudomonas sphaeroides.

F E Nano, S Kaplan
PMCID: PMC221553  PMID: 6290458

Abstract

The transposon Tn951 (lac) was introduced into the photosynthetic bacterium Rhodopseudomonas sphaeroides 2.4.1, which is normally Lac-, via the P-group plasmid RP1. beta-Galactosidase was produced constitutively in both chemotrophically and phototrophically grown cells, and the levels were found to be the same but low. Mutants were isolated, however, that were able to grow on lactose minimal medium and which expressed different levels of beta-galactosidase when grown chemotrophically or phototrophically. The beta-galactosidase levels found in all R. sphaeroides strains were much less than those found in Escherichia coli.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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