Occurrence and distribution of methylated purines in the ribonucleic acids of subcellular fractions.
نویسندگان
چکیده
منابع مشابه
The occurrence of methylated guanines in ribonucleic acids from several sources.
A number of additional purines and pyrimidines have recently been described as minor constituents of ribonucleic acids. Cohn (1957, 1958, 1959) and Davis & Allen (1957) have described an unusual pyrimidine nucleotide from yeast ribonucleic acid, thymine, 2-methyladenine, 6-methylaninopurine and 6-dimethylaminopurine have been identified as components ofribonucleic acid from several sources (Lit...
متن کاملOccurrence of Methylated Purine Bases in Yeast Ribonucleic Acid*
A number of methylated purine bases have recently been reported to occur in small quantities in the urine of normal human subjects. These include 1-methylguanine, iV*-methylguanine (6-hydroxy-2-methylaminopurine) ,I 1-methylhypoxanthine, and 8-hydroxy-7-methylguanine (1) in addition to 7-methylguanine, previously known as a urinary constituent (2). These compounds were found to be metabolites o...
متن کاملOccurrence of methylated purine bases in yeast ribonucleic acid.
A number of methylated purine bases have recently been reported to occur in small quantities in the urine of normal human subjects. These include 1-methylguanine, iV*-methylguanine (6-hydroxy-2-methylaminopurine) ,I 1-methylhypoxanthine, and 8-hydroxy-7-methylguanine (1) in addition to 7-methylguanine, previously known as a urinary constituent (2). These compounds were found to be metabolites o...
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Total and specific activities of alaninaminotransferase (Al-AT) were determined in general tissues, mitochondrial and cytosol fractions of visual, orbital, motor, limbic areas of brain cortex and hypothalamus of three-month old and one-year old rats under 10-20 days and 30 days protein deprivation and under recovery of normal food regime during the same terms. It was found out that Al-AT activi...
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Naphthenic acids and TAN are one of the ever-increasing crucial problems in oil, shale oil and sand oil industry and also environment protection. Furtherer, they increases the corrosion of some parts of a refinery and transport pipelines and also can create nanoemulsions and make complicated the refining process especially in desalters. To prevent these problems it is important to first obtain ...
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ورودعنوان ژورنال:
- The Biochemical journal
دوره 85 شماره
صفحات -
تاریخ انتشار 1962