TRANSAMINATION REACTION IN A STRAIN OF CORYNEBACTERIUM DIPHTHERIAE
نویسندگان
چکیده
منابع مشابه
The cytology of a strain of Corynebacterium diphtheriae.
Organism studied. Corynebacteriunm diphtheriae, type mnitis, strain A9255. Growth media included M. and E. (AMorton and Engley, 1945) broth and agar, with and without enrichment by whole blood, plasma or the lysate from human blood cells subjected to freezing and thawing. Culture was usually at 37 C; occasionally, at room temperature. Stained preparations. Cells in broth culture were placed on ...
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A nonlysogenic, non-toxinogenic strain was isolated from the PW8 strain of C. diphtheriae by two-step ultraviolet induction. This strain was lysed by phages derived from the PW8 strain but not by beta phages from the C7(beta) strain. When this cured strain was lysogenized with phages from the PW8 strain, toxin production by the resulting lysogens was about a half or a quarter of that of the par...
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In 1951, Freeman made the remarkable discovery that nontoxinogenic Corynebacterium diphtheriae became toxinogenic2 after association with the lytic phage B, previously described by Toshach (1950). From lysates of nontoxinogenic, nonlysogenic C. diphtheriae, Freeman and Morse (1951) established, through the isolation of single cells, lysogenic strains which were toxinogenic. The lysogenic clones...
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Five clones of the Park-Williams number 8 strain of Corynebacterium diphtheriae, previously maintained in separate laboratories, were examined for their colonial and biochemical properties, for the restriction and modification system which operates to obscure their lysogeny, and for their capacity to produce large amounts of toxin under ordinary laboratory conditions. The phenotypes of their ph...
متن کاملNeuraminidase of Corynebacterium diphtheriae.
Neuraminidase activity has been found in a variety of strains of Corynebacterium diphtheriae, both toxinogenic and nontoxinogenic. The enzyme has been shown to be intracellular, possibly associated with the cytoplasmic membrane. Toxinogenic strains of the diphtheria bacillus, grown under conditions unsuitable for maximal toxin production, produce neuraminidase, and the enzyme has been purified ...
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ژورنال
عنوان ژورنال: Japanese Journal of Microbiology
سال: 1958
ISSN: 0021-5139
DOI: 10.1111/j.1348-0421.1958.tb00051.x