Plasmid Profiles of Lactose-Negative and Proteinase-Deficient Mutants of Streptococcus lactis C10, ML(3), and M18.

Applied and environmental microbiology ·Vol. 37 ·No. 6 ·1979-06-00 ·Pages 1193-5

Kuhl SA, Larsen LD, McKay LL

Abstract

Lactose- and proteinase-negative (Lac Prt) mutants of Streptococcus lactis C10, ML3, and M18 were isolated after treatment with ethidium bromide. The Lac Prt mutants of C10 were missing a 40-megadalton plasmid. A 33-megadalton plasmid was absent in the ML3 mutants, and the M18 variants lacked a 45-megadalton plasmid. The results suggest a linkage of these metabolic traits to the respective plasmids. The possible complexity of the interrelationship between lactose metabolism and proteinase activity is presented.

Authors & Affiliations

3 authors, click to expand affiliations / ORCID

Kuhl S A

Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota 55108.

Larsen L D

McKay L L

References (14)

14 references, click to expand

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Article Info

Journal

Applied and environmental microbiology

Abbr.

Appl Environ Microbiol

ISSN

0099-2240

DOI

10.1128/aem.37.6.1193-1195.1979

Published

1979-06-00

Pages

1193-5

Language

English

Region

United States

NLM ID

7605801

PMCID

PMC243377

External Links

PubMed source DOI: 10.1128/aem.37.6.1193-1195.1979 PMC Full Text View journal details

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Plasmid Profiles of Lactose-Negative and Proteinase-Deficient Mutants of Streptococcus lactis C10, ML(3), and M18.

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