Results 251 to 260 of about 435,238 (305)

Inhibition of histidine decarboxylase. Derivatives of histidine

Journal of Medicinal Chemistry, 1977
Twenty-eight derivatives of histidine were tested as inhibitors of histidine decarboxylase from rat stomach. Potent inhibition was observed with the methyl ester of L-histidine (1) which had a Ki = 1.8 X 10(-6) M. Substitution on 1 at various positions resulted in a decrease or complete loss of inhibition.
J L, Kelley, C A, Miller, H L, White
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Thiophosphorylation of Histidine

The Journal of Organic Chemistry, 2000
The preparation of a novel phosphorus species, thiophosphoramidate, has enabled the specific thiophosphorylation of histidine at its 3-position. The rates of phosphorylation and thiophosphorylation of histidine are reported, as well as the spectroscopic properties of both thiophosphoramidate and 3-thiophosphohistidine.
M C, Pirrung, K D, James, V S, Rana
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Histidine Operon

2013
The biosynthesis of histidine has been studied extensively in Salmonella enterica and Escherichia coli. In these enterobacteria, a single operon composed of eight adjacent genes encodes the complete set of histidine biosynthetic enzymes. Three (hisD, hisNB,andhisIE) of the eight genes encode bifunctional enzymes, while two (hisH and hisF) encode a ...
P. Alifano, FANI, RENATO
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DNA–histidine complex formation in isoelectric histidine buffers

Journal of Chromatography A, 1999
The free solution electrophoretic mobility of two DNA molecules of different molecular masses, 18 base pairs and 2686 base pairs, has been measured in isoelectric histidine buffers with and without added low-molecular-mass electrolytes. Extensive DNA-histidine complex formation is observed in isoelectric histidine buffer, as evidenced by distortion and
N C, Stellwagen, C, Gelfi, P G, Righetti
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Adsorption of Histidine and Histidine-Containing Peptides on Au(111)

Langmuir, 2010
The adsorption of histidine (His) and three His-derived peptides on Au(111) has been studied by soft X-ray photoelectron spectroscopy (XPS) and near-edge X-ray absorption fine structure spectroscopy (NEXAFS) at the nitrogen and oxygen K edges. The peptides were glycyl-histidine (Gly-His), glycyl-histidine-glycine (Gly-His-Gly), and glycyl-glycyl ...
Vitaliy, Feyer, Oksana, Plekan, Nataliya, Tsud, Vladimír, Cháb, Vladimír, Matolín, Kevin C, Prince   +5 more
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Prebiotic synthesis of histidine

Journal of Molecular Evolution, 1990
The prebiotic formation of histidine (His) has been accomplished experimentally by the reaction of erythrose with formamidine followed by a Strecker synthesis. In the first step of this reaction sequence, the formation of imidazole-4-acetaldehyde took place by the condensation of erythrose and formamidine, two compounds that are known to be formed ...
C, Shen, L, Yang, S L, Miller, J, Oro
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Gastric histidine decarboxylase

Analytical Biochemistry, 1968
Abstract A simple method is described for determining histidine decarboxylase activity. It depends on the measurement of 14 CO 2 liberated from tracer carboxyl- 14 C- l -histidine. The method is sensitive enough to permit measurements in small samples of gastric mucosa of individual rats. It is specific in that dopa decarboxylase does not interfere.
P E, Powell, M A, Kumar
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Inhibition of histidine decarboxylases

Life Sciences, 1963
Abstract Histidine decarboxylases of mammalian origin are of two main types. One of these acts not only on histidine but also on other aromatic amino acids, notably L-3,4-dihydroxyphenylalanine (DOPA) and L-5-hydroxytryptophan. A typical example of this non-specific enzyme, for which the term aromatic L-amino acid decarboxylase has been suggested1 ...
J D, REID, D M, SHEPHERD
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THE HISTIDINE REQUIREMENT OF THE INFANT

Pediatrics, 1963
Histidine appears to be an essential amino acid for the young infant. Its omission from the diets of young infants gives rise to a depression of weight gain and of nitrogen retention. It also resulted in a dermatitis clinically and pathologically similar to infantile eczema, except for the absence of pruritus and atrophic changes in the sebaceous ...
S E, SNYDERMAN, A, BOYER, E, ROITMAN, L E, HOLT, P H, PROSE   +4 more
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