Plasmid Profiles of Lactose-Negative and Proteinase-Deficient Mutants of Streptococcus lactis C10, ML 3 , and M18
- 1 June 1979
- journal article
- research article
- Published by American Society for Microbiology in Applied and Environmental Microbiology
- Vol. 37 (6) , 1193-1195
- https://doi.org/10.1128/aem.37.6.1193-1195.1979
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.This publication has 18 references indexed in Scilit:
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