Studies on bacterial amino-acid decarboxylases: 2. l(-)-tyrosine decarboxylase from Streptococcus faecalis.
نویسنده
چکیده
منابع مشابه
Amino acid decarboxylases of lactic acid bacteria.
Many strains of a wide variety of bacterial species have been studied for their amino acid decarboxylase activity (Gale, 1946). However, to our knowledge the lactobacilli have not been examined. It has been shown in our laboratory that oral lactobacilli may be classified into three types according to their ability to attack certain carbohydrates, intensity of acid production from glucose, and b...
متن کامل102. the Production of Amines by Bacteria 2. the Production of Tyramine by Streptococcus Faecalis
IN the first paper of this series, the author [Gale, 1940] showed that washed suspensions of Bact. coli will decarboxylate 1( + )-arginine, 1( + )-lysine, l(+)-ornithine, 1(-)-histidine and l(+)-glutamic acid to form agmatine, cadaverine, putrescine, histamine and y-aminobutyric acid respectively. Of 14 strains of coliform organisms investigated, 12 decarboxylated arginine, 12 histidine, 13 lys...
متن کاملIdentification of the Enterococcus faecalis tyrosine decarboxylase operon involved in tyramine production.
Screening of a library of Enterococcus faecalis insertional mutants allowed isolation of a mutant affected in tyramine production. The growth of this mutant was similar to that of the wild-type E. faecalis JH2-2 strain in Maijala broth, whereas high-performance liquid chromatography analyses showed that tyramine production, which reached 1,000 microg ml(-1) for the wild-type strain, was complet...
متن کاملFunction of the vitamin B6 group; pyridoxal phosphate (codecarboxylase) in transamination.
Vitamin Be has for some time been implicated in protein metabolism. More recently a specific function of pyridoxal in the coenzome of tyrosine decarboxylase has been found (l), and the discovery of this function extended to include amino acid decarboxylases in general (2, 3). All members of the vitamin Be group (pyridoxine, pyridoxal,” pyridoxamine) are converted into this coenzyme (termed code...
متن کاملThe absorption of glycine and alanine and their peptides by Lactobacillus casei.
A striking aspect of peptide utilization by bacteria auxotrophic for amino acids is provided by those cases in which peptides promote growth to a greater extent than an equivalent amount of the free essential amino acid that they supply. Kihara and Snell (1) recognized three sets of circumstances that lead to thii result. In Case 1 the free amino acid, but not its peptides, is partially destroy...
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عنوان ژورنال:
- The Biochemical journal
دوره 38 3 شماره
صفحات -
تاریخ انتشار 1944