Purification and Properties of Phenylethanolamine-N-methyl Transferase
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چکیده
منابع مشابه
Purification and properties of phenylethanolamine-N-methyl transferase.
The methylation of norepinephrine to epinephrine was first demonstrated by Biilbring with the use of minced adrenal gland and adenosine triphosphate (2). Soon after, Keller, Boissonnas, and du Vigneaud (3) showed that the methyl group of methionine is incorporated into the epinephrine of the adrenal gland in the intact animal. Subsequently, S-adenosylmethionine was shown to be the methyl donor ...
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Unilateral explants of rat adrenal medullas grown in the anterior chamber of the eye contained very low phenylethanolamine-Nmethyl transferase (PNMT) activity. When animals were treated with dexamethasone for 7 days, PNMT activity rose more than 10-fold. These findings suggest that the increase in PNMT activity produced by glucocorticoids does not require an intact adrenal innervation. (Endocri...
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The demonstration of the hormone mclatonin (N-acetyl-Bmethoxytryptamine) in bovine pineal gland (1) prompted a study of the enzymes involved in its formation and metabolism. In preliminary studies (2, 3) we described an enzyme, hydroxyindole-O-methyl transferase, in the pineal gland of cows, that catalyzes the 0-methylation of N-acetyl-serotonin to melatonin. This paper describes the purificati...
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Glutathione transferase (GST) (EC 2.5.1.18) was purified from a cell extract of Issatchenkia orientalis, and two GST isoenzymes were isolated. They had molecular weights of 37,500 and 40,000 and were designated GST Y-1 and GST Y-2, respectively. GST Y-1 and GST Y-2 gave single bands with molecular weights of 22,000 and 23,500, respectively, on sodium dodecyl sulfate-polyacrylamide gel electroph...
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ژورنال
عنوان ژورنال: Journal of Biological Chemistry
سال: 1962
ISSN: 0021-9258
DOI: 10.1016/s0021-9258(19)83758-4