New Assay for Penicillinase and Some Results on Penicillinase Induction
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چکیده
منابع مشابه
New Assay for Penicillinase and Some Results on Penicillinase Induction.
Imsande, John (Western Reserve University, Cleveland, Ohio). New assay for penicillinase and some results on penicillinase induction. J. Bacteriol. 89:1322-1327. 1965.-A rapid, sensitive, and reliable assay of penicillinase activity is described. Studies conducted on the induction of penicillinase, with use of the new assay, show that actinomycin D inhibits growth and the induced synthesis of p...
متن کاملRapid fixed-time assay for penicillinase.
Many methods of assaying penicillinase activity have been devised (N. Citri and M. R. Pollock, Advan. Enzymol. 28:237, 1966; N. Citri, Methods Med. Res., 10:221, 1964; J. M. T. HamiltonMiller et al., J. Pharm. Pharmacol. 15:81, 1963; D. A. Wolfe and M. Hamberger, J. Lab. Clin. Med. 59:469, 1962). These have included colorimetric determinations of acid or alkali production, manometric techniques...
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در این رساله به بررسی رفتار جواب های رده ای از معادلات دیفرانسیل با مشتقات جزیی در دامنه های کراندار می پردازیم . این معادلات به فرم نیم-خطی و غیر خطی برای مسایل مستقیم و معکوس مورد مطالعه قرار می گیرند . به ویژه، تاثیر شرایط مختلف فیزیکی را در مساله، نظیر وجود موانع و منابع، پراکندگی و چسبندگی در معادلات موج و گرما بررسی می کنیم و به دنبال شرایطی می گردیم که متضمن وجود سراسری یا عدم وجود سراسر...
Studies on Penicillinase
On alkaline hydrolysis, penicillins are converted into penicilloic acids (1). Penicillinase appears to bring about the same transformation, in which a carboxyl group of pK 4.7 is generated (2). Foster (3) allowed penicillinase to act on penicillin in bicarbonate buffer in the Warburg respirometer and observed the evolution of COZ. Since such a reaction can be followed simply and with considerab...
متن کاملInduction of penicillinase with inorganic phosphate.
Phosphate stimulates penicillinase formation in Bacillus cereus 569. The rate of penicillinase synthesis in the presence of 0.3 m phosphate, pH 7.0, is approximately 10-fold greater than that for uninduced cells, while the rate of synthesis in the presence of 0.3 m phosphate and 1 unit/ml of penicillin is approximately fourfold greater than in the presence of penicillin alone. When phosphate-in...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 1965
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.89.5.1322-1327.1965