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. 1977 Jun;130(3):1064–1071. doi: 10.1128/jb.130.3.1064-1071.1977

Genetic loci of hemolysin production in Streptococcus faecalis subsp. zymogenes.

M L Frazier, L N Zimmerman
PMCID: PMC235328  PMID: 405371

Abstract

Two plasmids corresponding to molecular weights of 38.5 X 10(6) and 3.6 X 10(6) have been identified in Streptococcus faecalis subsp. zymogenes strain X-14. The larger plasmid is required for hemolysin-bacteriolysin production. Strain L2, a nonlytic nitrosoquanidine mutant of strain X-14, still harbors the hemolytic plasmid and produces the lysin component, but not the activator component, of the lytic system. Conjugal transfer of this plasmid from strain L2 to plasmid-free strains and strains cured of the 38.5-megadalton plasmid gives rise to hemolytic recipients. This implicates a gene in hemolysin production at a site other than the 38.5-megadalton plasmid.

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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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