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histidine

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histidine /his·ti·dine/ (his´tĭ-din) (-dēn) an essential amino acid obtainable from many proteins by the action of sulfuric acid and water; it is necessary for optimal growth in infants. Its decarboxylation results in formation of histamine. Symbols His and H.
his·ti·dine (hst-dn, -dn)
n. Abbr. His
An amino acid that is essential for tissue growth and repair.

histidine (His)
[his′tidēn]
Etymology: Gk, histos, tissue
a basic amino acid found in many proteins and a precursor of histamine. It is an essential amino acid in infants. See also amino acid, protein.
Chemical structure of histidineenlarge picture
Chemical structure of histidine

histidine (his´tidēn),
n an essential amino acids for infants and children. See also amino acid.

histidine
His; a naturally occurring amino acid, essential for optimal growth of the young; its decarboxylation results in formation of histamine.


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The heterologously produced histidine (His)--tagged GlpQ fusion protein was purified by using Ni-NTA spin columns (Qiagen, Valencia, CA, USA), and the protein concentration was determined with Bradford assay (Bio-Rad Laboratories, Hercules, CA, USA).
To examine the requirement for a positive charge for MAs(III) uptake, Arg-219 was changed to alanine, lysine, glutamate, and histidine.
The new plant, which has an annual amino acid production capacity of 2,500 tons, manufactures 12 different amino acids including arginine, histidine and serine for transfusions.
 
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