histidine

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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.