histidine


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Related to histidine: histidine decarboxylase

histidine

 [his´tē-dēn]
a naturally occurring amino acid, one of the essential amino acids, necessary for optimal growth of infants; its decarboxylation results in formation of histamine.

his·ti·dine (H, His),

(his'ti-dēn),
α-Amino-1H-4; propionic acid; the l-isomer is a basic amino acid found in most proteins. It is a nutritionally essential amino acid in mammals.

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.

histidine

(hĭs′tĭ-dēn′, -dĭn)
n.
An essential amino acid, C6H9N3O2, important for tissue growth and repair.

histidine (His or H)

[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.
enlarge picture
Chemical structure of histidine

his·ti·dine

(His, H) (his'ti-dēn)
The l-isomer is a basic amino acid found in most proteins.

histidine

An essential amino acid and precursor of HISTAMINE.
Histidineclick for a larger image
Fig. 191 Histidine . Molecular structure.

histidine (H, His)

one of the 20 AMINO ACIDS common in proteins. It carries an extra basic group making it alkaline and is soluble in water. See Fig. 191 . The ISOELECTRIC POINT of histidine is 7.6.

his·ti·dine

(His, H) (his'ti-dēn)
The l-isomer is a basic amino acid found in most proteins.

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.
References in periodicals archive ?
The increased electrostatic repulsion between histidine moieties induced the aggregate swelling as described above, and therefore, DOX can be rapidly protonated by an easy contact with external buffer medium.
Investigating visible UV spectrum indicated the connection of Histidine to copper.
Threonine and Met + Cys had similar values; histidine had comparable value to leucine.
The revertant colonies on the test and control plates were counted with a colony counter (Biocount 2000, Biosys), and the presence of the background lawn resulting from the trace of histidine added to the top agar was confirmed on all plates.
Saturated amino acid solutions were made by dissolving solid serine, cysteine, tyrosine, threonine, asparagine, glutamine, lysine, histidine, and glycine in 10 mM aqueous ammonium acetate.
Two organic acids and 1 amino acid were selected for study: citric acid, oxalic acid, and histidine.
Another histidine is situated on the other side of the pocket.
However, his team has just received a patent for a new formulation, called chromium histidine, that in human trials results in absorption of about 50 percent more chromium than conventional supplements do, he says.
The essential amino acids are isoleucine, phenylalanine, lysine, methionine, threonine, tryptophan, valine, arginine and histidine.
SPINACINES plural of spinacine, an amino acid derived from the much commoner and more important amino acid histidine, the plural of which is listed in Web 3.
The enzymes, chymotrypsin, trypsin, and lysozyme, exhibited rate enhancement values greater by several orders of magnitude than those of the individual amino acids, serine, histidine, tyrosine, and lysine.