منابع مشابه
Vitamin B12 and protein biosynthesis. VI. Relation of vitamin B12 to amino acid activation.
It has been reported (l-5) from this laboratory that vitamin Blz functions in vivo and in vitro in the incorporation of amino acids into protein. There was observed a reduction in the incorporation of amino acids into protein in vitamin Brz-deficient pigs and rats in vivo as compared to normal animals (4). Similar reduction in the incorporation of amino acids was observed upon incubation of liv...
متن کاملStudies on vitamin B12 production with Streptomyces olivaceus.
Manual of Recommended Water Sanitation Practice. Public Health Rpts., 58: 69. CALDWELL, E. L., AND PARR, L. W. 1933 Pump infections under normal conditions in controlled experimental fields. J. Am. Water Works Assoc. 25: 1107-1117. CALVERT, C. K. 1937 The streptococci test for pollution of water. J. Am. Water Works Assoc. 29i 683. CLEMESHA, W. W. 1912 The Bacteriology of Surface Waters in the T...
متن کاملStudies on the 57Co vitamin B12 plasma level absorption test.
Results of the (57)Co vitamin B(12) plasma level absorption test are described in 163 patients. The use of intramuscular carbachol with the test and the presence or absence of current vitamin B(12) therapy did not affect the test results. Injection of 1,000 mug of unlabelled vitamin B(12) during the test augmented plasma levels in patients with normal absorption but tests without this injection...
متن کاملTransport of vitamin B12 in Escherichia coli: genetic studies.
The chromosomal location of two genetic loci involved in the transport of cyanocobalamin (B(12)) in Escherichia coli K-12 was determined. One gene, btuA, is believed to code for the transport protein in the cytoplasmic membrane, because a mutant with an alteration in this gene has lost the ability to accumulate B(12) within the cell although normal levels of the surface receptors for B(12) are ...
متن کاملUpdate on vitamin B12 deficiency.
Vitamin B(12) (cobalamin) deficiency is a common cause of megaloblastic anemia, a variety of neuropsychiatric symptoms, and elevated serum homocysteine levels, especially in older persons. There are a number of risk factors for vitamin B(12) deficiency, including prolonged use of metformin and proton pump inhibitors. No major medical organizations, including the U.S. Preventive Services Task Fo...
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ژورنال
عنوان ژورنال: NIPPON SUISAN GAKKAISHI
سال: 1960
ISSN: 1349-998X,0021-5392
DOI: 10.2331/suisan.26.321