THYMIDINE ENHANCEMENT FACTOR FOR THE GROWTH OF PEDIOCOCCUS CEREVISIAE 8081
نویسندگان
چکیده
منابع مشابه
Uptake and metabolism of folate by a folate-utilizing mutant of Pediococcus cerevisiae (8081-S) and the parent strain (8081).
Pediococcus cerevisiae 8081, which uses folinic acid for growth, and its nutritional mutant 8081/S, which utilizes folate, were compared with respect to their ability to take up and metabolize folate. In contrast to the parent strain 8081, which takes up very little folate, the uptake of folate by the mutant is a concentrative, saturable, and energydependent process. At low extracellular concen...
متن کاملEffect of folinate on thymidine uptake by Pediococcus cerevisiae.
Uptake of (3)H-thymidine by resting cells of Pediococcus cerevisiae was found to be energy- and temperature-dependent. The pH optimum was between 6.5 and 8.0, and after 2 min of incubation most of the radioactivity was found in the deoxyribonucleic acid (DNA) fraction. Iodoacetate at a concentration of 10(-2)m caused a 50% inhibition of uptake. Preincubation of resting cells for 10 min with fol...
متن کاملEffects of uracil and thymidine on the development of resistance to 5-fluorouracil in Pediococcus cerevisiae.
White, P. J. (Roswell Park Memorial Institute, Buffalo, N.Y.) and C. A. Nichol. Effects of uracil and thymidine on the development of resistance to 5-fluorouracil in Pediococcus cerevisiae. J. Bacteriol. 85:97-105. 1963.-Growth of Pediococcus cerevisiae ATCC 8081 in a basal semidefined medium was inhibited by 5-fluorouracil (FU) and 5-fluoro-2'-deoxyuridine (FUDR). Addition of uracil slightly d...
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دوره مشترک کارشناسی ارشد بازاریابی و تجارت الکترونیک دانشگاه تربیت مدرس_ دانشگاه تکنولوژی lule? چکیده پایان نامه عوامل موثر بر پذیرش اینترنت بانک توسط مشتریان پیشرفت فناوری اطلاعات و ارتباطات و به طور خاص رشد اینترنت جهت تراکنش های معاملات بازرگانی، تاثیر بسیار عمیقی در صنعت بانکداری داشته است.این در حالی ست که نفوذ بانکداری اینترنتی در کشورهای در حال توسعه بسیار کندتر از نفوذ آن ...
15 صفحه اولPhysiological and enzymatic properties of a thymidine-requiring Pediococcus cerevisiae mutant.
We describe the isolation and characterization of a Pediococcus cerevisiae thymidine-requiring mutant and its thymidine-independent revertant. The mutant strain lacked thymidylate synthetase activity and had an absolute requirement for low concentrations (2 micrograms/ml) of thymidine in addition to a requirement for N-5-formyl tetrahydrofolic acid (folinate). Even at high concentrations (up to...
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ژورنال
عنوان ژورنال: The Journal of General and Applied Microbiology
سال: 1970
ISSN: 1349-8037,0022-1260
DOI: 10.2323/jgam.16.3_181