INHIBITION OF R-FACTOR TRANSFER AND PHAGE INFECTION BY REQUINOMYCIN
نویسندگان
چکیده
منابع مشابه
Inhibition of R-factor transfer and phage infection by requinomycin.
To be effective in inhibiting R-factor transfer (between Escherichia coli strains) and infection of E. coli with phage f2, requinomycin must be present at the time of initiation of both events. Delayed addition of requinomycin showed no or slight inhibition. No direct effect of requinomycin on phage f2 or E.coli strains employed was observed. The intact cell surface of E.coli must be impermeabl...
متن کاملpragmatic transfer in compliment responses and chastisements by iranian learners of english
فرهنگ های گوناگون دریافت ها و تعبیر های مختلفی از تناسب و ادب دارند. بنابراین، ارتباط میان فرهنگی خطرات ذاتی خطای ارتباطی را نشان می دهد. این پژوهش به منظور تعیین وقوع انتقال منظورشناختی زبان در زبان بینابینی زبان آموزان ایرانی، اختلاف منظورشناختی زبان را بین فارسی و انگلیسی در کنش های کلامی پاسخ تحسین و انتقاد بررسی می کند.داده ها از میان 33 آمریکایی انگلیسی زبان، 85 زبان آموز ایرانی در سطوح م...
15 صفحه اولInhibition of coliphage multiplication and R plasmid transfer by desdanine.
Desdanine inhibited the plaque formation of male-specific coliphages but not that of other coliphages tested. Desdanine also suppressed the multiplication of both RNA phage Q beta and filamentous DNA phage f1 at the concentration of 3.13 approximately 6.25 mug/ml which had no influence on the growth of their host cells. However, the inhibitory effect on the phage multiplication was not due to t...
متن کاملSpecialized transduction of tetracycline resistance by phage P22 in Salmonella typhimurium. I. Transduction of R factor 222 by phage P22.
Transduction of R factor 222, which carries four drug resistance markers (~0, strR, camR, totR), by phage P22 in Salmonella typhimurium results in the segregation of the drug resistance markers into tetR and the other three. The tetR marker was found to be integrated at proA near the P22 prophage attachment site of the recipient chromosome, confirming the previous result of Dubnau and Stocker (...
متن کاملAnaerobic R factor transfer in Escherichia coli.
R factor mediated transfer of antibiotic resistance between Enterobacteriaceae has been reported to occur in the mammalian gastrointestinal tract (Kasuya, I 964; Reed, Sieckmann & Georgi, 1969; Guinie, 1970; Wiedemann, Knothe & Doll, 1970) where conditions are mainly anaerobic as demonstrated by the abundance of obligate anaerobic bacteria such as Bacteroides species (Moore, Cat0 & Holdeman, 19...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Journal of Antibiotics
سال: 1972
ISSN: 0021-8820,1881-1469
DOI: 10.7164/antibiotics.25.629