PYRIDOXAL PHOSPHATE AND PYRIDOXAMINE PHOSPHATE AS GROWTH FACTORS FOR LACTIC ACID BACTERIA
نویسندگان
چکیده
منابع مشابه
Pyridoxamine phosphate-oxidase and pyridoxal phosphate-phosphatase activities in Escherichia coli.
acetone), than found in earlier investigations. Mayer (1930) used a concentration of 66% for his determinations, but this is definitely inhibitory, though lese so for insoluble preparations than for soluble. The enzyme is remarkably stable before it becomes soluble and the activity of soluble preparations is retained well in the cold. The optimum temperature for enzyme action is much lower than...
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In the course of testing the possible coenzymic function of the phosphorylated vitamin B, derivatives on the synthesis of glucosamine 6-phosphate by a rat liver preparation, the appearance of a yellow color similar to that of pyridoxal 5-phosphate was observed in the samples containing pyridoxamine 5-phosphate. Further investigation has revealed the presence of a soluble enzyme system in extrac...
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In 1939 McIlwain, Fildes, Gladstone, and Knight found that the growth of Streptococcus hemolyticus depended upon the addition of glutamine to their medium, the presence of as little as 0.1 y per ml. producing noticeable growth in 24 hours (1). dl-Glutamic acid also exhibited a growth action, but over 10,000 times as much was required for a similar effect. The suggestion was made that the organi...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1950
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(18)56489-9