Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1979 Feb;137(2):735-9.
doi: 10.1128/jb.137.2.735-739.1979.

A plasmid in Streptococcus pneumoniae

M D Smith, W R Guild

A plasmid in Streptococcus pneumoniae

M D Smith et al. J Bacteriol. 1979 Feb.

Abstract

Plasmid deoxyribonucleic acid has been detected in three related laboratory strains of Streptococcus pneumoniae. Strains D39S, R36, and R36NC each contain a minimum of two copies per cell of a 2.0-megadalton plasmid (pDP1). A plasmid twice as large as this smaller one is also present in much lower quantity in these strains, but neither plasmid is present in four strains related to these or in a drug-resistant clinical isolate from Paris. The plasmid yield was not amplified in the presence of chloramphenicol. No phenotype has been correlated with the presence of pDP1, which has existed in strains carried for many years in laboratory collections.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. Proc Natl Acad Sci U S A. 1967 May;57(5):1514-21 - PubMed
    1. Virology. 1968 Apr;34(4):738-47 - PubMed
    1. J Bacteriol. 1976 Oct;128(1):347-55 - PubMed
    1. J Mol Biol. 1977 Feb 15;110(1):119-46 - PubMed
    1. J Virol. 1976 Aug;19(2):659-67 - PubMed

Publication types

LinkOut - more resources