Results 271 to 280 of about 212,752 (309)
Some of the next articles are maybe not open access.
2006
Biosynthesis of the three aromatic amino acids (l-phenylalanine, l-trypto phan, l-tyrosine) and its regulation in Escherichia coli and corynebacteria are reviewed. The common aromatic biosynthetic pathway (shikimate pathway) starts with the condensation of phosphoenolpyruvate and erythrose 4-phosphate.
openaire +1 more source
Biosynthesis of the three aromatic amino acids (l-phenylalanine, l-trypto phan, l-tyrosine) and its regulation in Escherichia coli and corynebacteria are reviewed. The common aromatic biosynthetic pathway (shikimate pathway) starts with the condensation of phosphoenolpyruvate and erythrose 4-phosphate.
openaire +1 more source
The Luminescence of the Aromatic Amino Acids
1971The fluorescence and phosphorescence of natural proteins arise from emission by the fluorogenic ring moieties of the aromatic amino acids. Such macromolecular luminescence may be visualized as corresponding to the intrinsic luminescence representing the summed contribution of the amino acid fluorogens, as perturbed by incorporation into a Polypeptide ...
I. Weinryb, R. F. Steiner
openaire +1 more source
Biosynthesis of Aromatic Amino Acids
2014The genes and operons responsible for aromatic amino acid biosynthesis are organized differently in different bacterial species, reflecting different evolutionary histories and possibly the functional and regulatory constraints experienced by each species. This chapter describes the genes, enzymes, and reactions of aromatic amino acid biosynthesis in B.
Dennis Henner, Charles Yanofsky
openaire +1 more source
Effect of aromatic acids on the influx of aromatic amino acids in rat brain slices
Experimental Brain Research, 1977The influx of [3H]phenylalanine, [3H]tyrosine and [3H]tryptophan into brain cells was studied using brain slices from adult rats. Each aromatic amino acid inhibited the influx of the others into the brain cells. Tryptophan inhibited non-competitively the influx of phenylalanine, and phenylalanine similarly that of tyrosine and tryptophan.
P, Lähdesmäki, M L, Hannus
openaire +2 more sources
Chromatography of microbial metabolites of aromatic amino acids
Journal of Chromatography A, 1988A mixture of hydroxy-, methoxy- and aminobenzenecarboxylic acids (aromatic acids) was studied by gas (GC) and liquid (LC) chromatography. The gas and high-performance liquid chromatographs were attached to a computer. The GC method yielded elution data for trimethylsilyl derivatives of a large number of aromatic acids on four stationary silicone phases,
M, Jurková, M, Wurst
openaire +2 more sources
Metabolism of Aromatic Amino Acids
2015Phenylalanine and tyrosine are the simplest aromatic amino acids derived from alanine. Phenylalanine is an essential amino acid that our body cannot synthesise. This does not apply to tyrosine, which the body can synthesise only if there is a sufficient amount of phenylalanine – and availability of the enzyme participating in conversion of ...
Mária Stančíková, Jozef Rovenský
openaire +1 more source
Influence of chlorpromazine on decarboxylases of aromatic amino acids
Biochemical Pharmacology, 1961Abstract In vitro 10−4 M chlorpromazine did not influence decarboxylation of 5-hydroxytryptophan (5HTP) and 3 : 4-dihydroxyphenylalanine (dopa) in supernatant of rat brain and kidney. 10−3M chlorpromazine only inhibited dopa decarboxylation in brain supernatant to which no pyridoxal-5′-phosphat (py-5-p) had been added.
K F, GEY, W P, BURKARD, A, PLETSCHER
openaire +2 more sources
Aromatic Amino Acid Requirement of the Lactating Sow
Journal of Animal Science, 1985Six mature Yorkshire X Landrace sows were randomly assigned to a 6 X 6 Latin-square experiment on d 5 of lactation to determine the total phenylalanine (Phe) and tyrosine (Tyr) requirement. A control diet of corn sugar, cornstarch, whey, L-glutamic acid, solka floc, soybean oil, amino acids, minerals and vitamins was supplemented with L-Phe to provide .
W A, Lellis, V C, Speer
openaire +2 more sources
Aromatic amino acid hydroxylase genes and schizophrenia
American Journal of Medical Genetics, 2002AbstractPhenylalanine hydroxylase (PAH), which catalyzes the conversion of phenylalanine to tyrosine, shares physical, structural and catalytic properties with tyrosine hydroxylase (TH) and tryptophan hydroxylase (TPH) that catalyze the rate‐limiting steps in the biosynthesis of the neurotransmitters dopamine, noradrenaline, and serotonin.
Helen M, Chao, Mary Ann, Richardson
openaire +2 more sources
Metabolism of Aromatic Amino Acids
1970The central nervous system depends entirely upon the plasma amino acid pool for its supply of aromatic amino acids. These amino acids enter the brain substance readily from the blood. It is clear that this ready uptake is due to the functioning of transport mechanisms specific for amino acids.
Gordon Guroff, Walter Lovenberg
openaire +1 more source