GROUP-SPECIFIC CARBOHYDRATE OF GROUP C-VARIANT HEMOLYTIC STREPTOCOCCI
نویسندگان
چکیده
منابع مشابه
Group-specific Carbohydrate of Group C-variant Hemolytic Streptococci
The trypsinized cell walls of Group C hemolytic streptococci are composed of the specific carbohydrate antigen and a mucopeptide matrix. Certain phage resistant strains of Group C streptococci, isolated from organisms which survive exposure to Group C bacteriophage also possess carbohydrate and mucopeptide fractions, but the carbohydrate gives a precipitin reaction with Group A-variant antiseru...
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Soil organisms have been isolated which elaborate induced enzymes capable of attacking group A and variant (V) streptococcal carbohydrates. The V enzyme hydrolyzes V carbohydrate extensively to dialyzable split products with resultant total loss of precipitating activity with homologous antisera. The split products inhibit the reaction between intact V carbohydrate and its antiserum: evidence i...
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Two methods of typing group A hemolytic streptococci have been described: slide agglutination and anti-M precipitin tests. The first, developed by Griffith (1), is more extensively used. I t has the distinct advantages of requiring small amounts of serum and culture, and of a quick reaction time when all conditions are favorable. I t has certain disadvantages: The granular growth of some strain...
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A non-antigenic mucoid polysaccharide similar to that described by Kendall, Heidelberger, and Dawson was isolated from group C hemolytic streptococci. A simple method for its quantitative estimation is described. By means of this quantitative method, as well as by the direct isolation of the carbohydrates, the size and persistence of capsules in young cultures of various strains have been relat...
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Group G hemolytic streptococcal cell walls which have been treated with trypsin are composed of a group-specific polysaccharide moiety and a mucopeptide matrix. The mucopeptide contains N-acetylglucosamine, N-acetylmuramic acid, alanine, glutamic acid, lysine, and glycine, a composition similar to that of other groups of streptococci. The Group G carbohydrate is composed of rhamnose, N-acetylga...
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ژورنال
عنوان ژورنال: Journal of Experimental Medicine
سال: 1963
ISSN: 1540-9538,0022-1007
DOI: 10.1084/jem.118.6.1059