Affiliation:
1. Department of Bacteriology, Indiana University, Bloomington, Indiana
Abstract
Brock, Thomas
D. (Indiana University, Bloomington),
Barbara Peacher, and Deborah Pierson
. A survey of the bacteriocines of enterococci. J. Bacteriol.
86:
702–707. 1963.—A survey has been made of bacteriocine production by a wide variety of well-characterized strains of group D streptococci. On the basis of spectrums and sensitivity to chloroform, heat, and proteolytic enzymes, five distinct bacteriocines can be defined. Type 1 is produced by all
Streptococcus zymogenes
(
S. faecalis
var.
zymogenes
) strains, is active against a wide variety of gram-positive bacteria, and is also a hemolysin. Type 2 is produced by some
S. liquefaciens
(
S. faecalis
var.
liquefaciens
) strains, and acts on many enterococci as well as on certain other lactic acid bacteria. Type 3 is produced by certain strains of both
S. faecalis
and
S. faecium
, and inhibits a wide variety of group D streptococci, but is inactive against all other lactic acid bacteria tested except
Leuconostoc citrovorum
. Type 4 is produced by certain
S. faecium
strains and resembles in certain ways the type 3 activity, but differs from it in other ways. Type 5 has been found to be produced by only one proteolytic strain of
S. zymogenes
, and this bacteriocine has a very narrow spectrum. The strain that produces this bacteriocine also produces type 1 activity. No strain is sensitive to a bacteriocine of the type it produces.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference11 articles.
1. Tetrazolium reduction as a means of differentiating Streptococcus faecalis from Streptococcus faecium;BARNES E. M.;J. Gen. Microbiol.,1956
2. tUber einen bacteriocinartigen Stoff aus;BRANDIS H.;Enterokokken. Pathol. Microbiol.,1962
3. Antibiosis among lactobacilli;DEKLERK H. C.;Nature,1961
4. FREDERICQ , P. 1957 . Colicins. Ann. Rev. Microbiol. 11 : 7 - 22 .
5. etude du pouvoir bacteriocinogene dans le genre Listeria. II. Individualit 6 et classification des bacteriocines en cause;HAMON Y.;Ann. Inst. Pasteur,1963
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