The Origin of Purine and Pyrimidine Deoxyribose in Escherichia coli Systems
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چکیده
منابع مشابه
The origin of purine and pyrimidine deoxyribose in T6r+ bacteriophage.
Lanning and Cohen (1) reported that when Escherichia coli strain B is infected with T6r+ bacteriophage in a medium containing glucose-1-Cr4, the deoxyribose from the deoxyribonucleic acid of the T6rf particles liberated on lysis of the cells contains 40 to 60 per cent of the specific activity of the exogenous glucose. In parallel experiments, it was shown that the deoxyribose from the deoxyribo...
متن کاملThe purine and pyrimidine metabolism of normal and phage-infected Escherichia coli.
In the Escherichia coli B-coliphage system, duplication of the “T-even” phages involves the active synthesis of desoxypentose nucleic acid (DNA) (1). This virus DNA differs in purine to pyrimidine ratio from that of the host cell (2-4) and cytosine has been reported absent in purified preparations of Tz phage (2). Although the synthesis of virus DNA proceeds mainly from nitrogen (5) and phospho...
متن کاملBiosynthesis of ribose and deoxyribose in Escherichia coli.
The studies reported here are concerned with the biosynthesis of ribose and deoxyribose in Escherichia coli R-2. When these studies were undertaken the evidence available allowed no general conclusions to be drawn as to a common biosynthetic pathway for the two pentoses. Since that time numerous studies have contributed to a better understanding of the problem. Tracer studies on the origin of r...
متن کاملThe purine metabolism of Escherichia coli.
Although many tracer studies on the purine metabolism of higher organisms have been reported, there are only preliminary data (1, 2) on the purine metabolism of Escherichiu coli, strain B, the host of the “T series” of bacteriophages. The work presented in this paper was undertaken concomitantly with an investigation of the purine metabolism of the virusinfected cell (3). The study of the purin...
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از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1959
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)70305-0