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histidine
histidine
histidine A basic, polar (see
POLAR MOLECULE)
amino acid that contains an imidazole group (C
3H
4N
2).
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Histidine gains attention
Magazine article from: Joe Weider's Muscle & Fitness; 1/1/1999; ; 700+ words
; ...muscle tissue. But now the amino acid L-histidine is gaining attention for its convincing...cetylmyristoleate and gammalinolenic acid), but L-histidine is unique in that it appears to incorporate...and performance. Where Exactly Does Histidine Fit In? Histidine is an essential amino...
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Histidine-GLA-zinc complex to block pain & inflammation in treatment-resistant syndromes.(Quantum Medicine Update)
Magazine article from: Townsend Letter for Doctors and Patients; 2/1/2004; ; 700+ words
; ...alternative practitioners are familiar with histidine as an amino acid but few are aware of...supporting digestion and immune function. Histidine--a neurotransmitter released during...Although biochemists are not sure how histidine is synthesized by the body, they are...
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Genetic Analysis of the Histidine Utilization (hut) Genes in Pseudomonas fluorescens SBW25
Magazine article from: Genetics; 8/1/2007; ; 700+ words
; ABSTRACT The histidine utilization (hut) locus of Pseudomonas...SBW25 confers the ability to utilize histidine as a sole carbon and nitrogen source...hutF eliminated the ability to grow on histidine, indicating that SBW25 degrades histidine...
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Dietary L-histidine regulates murine skin levels of trans-urocanic acid, an immune-regulating photoreceptor, with an unanticipated modulation: Potential relevance to skin cancer
Magazine article from: The Journal of Nutrition; 11/1/1997; ; 700+ words
; Dietary L-Histidine Regulates Murine Skin Levels of Trans-Urocanic...photoisomerization of urocanic acid (UCA), a histidine derivative found in the stratum corneum. The addition of L-histidine to nonpurified mouse diet has been shown to...
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Dual Involvement of CbrAB and NtrBC in the Regulation of Histidine Utilization in Pseudomonas fluorescens SBW25
Magazine article from: Genetics; 1/1/2008; ; 700+ words
; ...fluorescens SBW25 is capable of growing on histidine as a sole source of carbon and/or nitrogen...system CbrAB is required for expression of the histidine utilization (hut) locus when histidine is the sole source of carbon and nitrogen...
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Histidine decarbxylase assay by capiliary electrophoresis.(MIDDLE REGION)(Report)(Brief article)
Magazine article from: Journal of the Tennessee Academy of Science; 7/1/2008; ; 699 words
; HISTIDINE DECARBXYLASE ASSAY BY CAPILIARY ELECTROPHORESIS. Rachel Stephens...University, Nashville, Tennessee. The catalyzed conversion of histidine by the enzyme histidine decarboxylase produces histidine, found in animals, plants...
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Protein histidine phosphorylation defective in diabetic rat islets.
Newspaper article from: Obesity & Diabetes Week; 10/6/2003; 661 words
; ...com & NewsRx.net) -- Protein histidine phosphorylation was defective in islets...described novel regulatory roles for protein histidine phosphorylation of key islet proteins...novel, ATP- and GTP-sensitive protein histidine kinase in isolated beta-cells that...
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High levels of dietary carnosine are associated with increased concentrations of carnosine and histidine in rat soleus muscle
Magazine article from: The Journal of Nutrition; 2/1/2001; ; 700+ words
; ...muscle concentrations of carnosine, histidine and vitamin E at deficient, minimally...muscle concentrations of carnosine, histidine and vitamin E when dietary vitamin E...Muscle concentrations of carnosine, histidine and vitamin E were measured in the lateral...
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Histidine Kinase Homologs That Act as Cytokinin Receptors Possess Overlapping Functions in the Regulation of Shoot and Root Growth in Arabidopsis
Magazine article from: Plant Cell; 6/1/2004; ; 700+ words
; ...The recent discovery of the Arabidopsis Histidine Kinase 4 (AHK4/CRE1/WOL cytokinin...AHK3 genes, both of which encode sensor histidine kinases closely related to AHK4, and...plants carrying lesions in the Arabidopsis Histidine Klnase 4 (AHK4 or CRE1/WOL) gene...
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Histidines needed for reovirus guanylyltransferase activity identified.
Newspaper article from: Drug Week; 2/13/2004; 547 words
; ...Scientists have identified two histidines necessary for reovirus mRNA...enzymatic activity suggested that histidine protonation is responsible...activity. Mutagenesis of the two histidines conserved among the orthoreovirus...Virology (Identification of two histidines necessary for reovirus mRNA...
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histidine
Book article from: The Columbia Encyclopedia, Sixth Edition
histidine , organic compound, one of the 22...stereoisomer appears in mammalian protein. Histidine is the direct precursor of histamine...imidazole group on the side chain of histidine can act as both an acid and a base...
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3‐methyl‐histidine
Book article from: A Dictionary of Food and Nutrition
3‐methyl‐histidine Derivative of the amino acid, histidine , found mainly in the contractile proteins of muscle (myosin and actin). Useful, among other purposes, as an index of the lean meat content of prepared foods...
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Ames, Bruce N. (1928- )
Book article from: World of Microbiology and Immunology
...could not produce an amino acid called histidine that normal bacteria produce and that...The next step was to add just enough histidine to allow the bacteria to live, and to...would mutate and again be able to produce histidine. When this happened the added chemical...
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Ames Test
Book article from: Genetics
...the bacteria use to make the amino acid histidine. Such his - strains cannot survive unless histidine is added to their agar. Ames reasoned...typhimurium to grow on agar that does not contain histidine. Growth indicates that a reverse mutation...
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Mutagen
Book article from: Chemistry: Foundations and Applications
...genes, making them unable to synthesize histidine. They can live on media containing histidine, but die when the amino acid is depleted...reactivate the gene for the synthesis of histidine; exposure to mutagenic substances allows...
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