Production of Extracellular Enzymes and Enterotoxins A, B, and C by Staphylococcus aureus
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چکیده
منابع مشابه
Production of extracellular enzymes and enterotoxins A, B, and C by Staphylococcus aureus.
Eighty-seven strains of Staphylococcus aureus were examined for their ability to produce enterotoxins A, B, and C, deoxyribonuclease, lysozyme, proteinase, lipase, and alpha-, beta-, and delta-hemolysins. Enterotoxigenic strains showed a significant tendency to be high lipase producers, but none of the other enzymes formed were correlated with the ability of the staphylococci to produce enterot...
متن کاملProduction of Extracellular Enzymes and Enterotoxins A , B , and C by Staphylococcus aureus AUDREY
Eighty-seven strains of Staphylococcus aureus were examined for their ability to produce enterotoxins A, B, and C, deoxyribonuclease, lysozyme, proteinase, lipase, and a-, ,B-, and 6-hemolysins. Enterotoxigenic strains showed a significant tendency to be high lipase producers, but none of the other enzymes formed were correlated with the ability of the staphylococci to produce enterotoxins A, B...
متن کاملProduction of Enterotoxins by Staphylococcus Aureus Isolated from Sheep Milk
The production of staphylococcal enterotoxin A and staphylococcal enterotoxin B was investigated in S. aureus isolates obtained from milk of clinically healthy sheep. In comparison with valid standard (up to 1. 10 CFU. ml), the S. aureus counts were higher in 36 of the total number of 46 positive milk samples (ranging from 1.2. 10 to 8.2. 10 CFU. ml). Six (13.0%) of the 46 isolates were enterot...
متن کاملScanning density gradient isoelectric focusing of Staphylococcus aureus enterotoxins B and C.
Purified Staphylococcus aureus enterotoxins B and C(1), the causative agents of staphylococcal food poisoning, were resolved into several components by scanning isoelectric focusing in sucrose density gradients in the absence and presence of 6 M urea and 5 mM dithiothreitol. The observed heterogeneity persisted in the denaturing medium, which suggests that the primary structure of protein enter...
متن کاملPenicillinase plasmid-linked genetic determinants for enterotoxins B and C1 production in Staphylococcus aureus.
The genes encoding for beta-lactamase (bla+) and resistance to metallic ions (cadmium, mercury, lead, arsenate, and arsenite) were located in a 56.2-kilobase plasmid, pZA10, isolated from a clinical strain, Staphylococcus aureus 6344. This strain produced enterotoxin B and enterotoxin C1. Elimination of pZA10 by either sodium dodecyl sulfate or heat treatment (43 degrees C) resulted in the loss...
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ژورنال
عنوان ژورنال: Infection and Immunity
سال: 1971
ISSN: 0019-9567,1098-5522
DOI: 10.1128/iai.4.2.110-115.1971