LEUCIN
\lˈuːsɪn], \lˈuːsɪn], \l_ˈuː_s_ɪ_n]\
Sort: Oldest first
-
A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid.
By Oddity Software
-
A white, crystalline, nitrogenous substance formed in the decomposition of albuminous matter by pancreatic digestion, by the action of boiling dilute sulphuric acid, and by putrefaction. It is also found as a constituent of various tissues and organs, as the spleen, pancreas, etc., and likewise in the vegetable kingdom. Chemically it is to be considered as amido-caproic acid.
By Noah Webster.
By Willam Alexander Newman Dorland
-
Amido-iso-caproic acid, (CH3)2CH.CH2.CHNH2.COOH. A white substance, crystallizing in shining plates, soluble in about fifty parts of water. It has both acid properties (carboxy- group) and basic properties (amido- group). It is found widely distributed in plant and animal life. All the proteins which have been closely studied yield l. upon hydrolytic cleavage and most proteins yield an abundance of this acid. It has been isolated as a normal constituent of the pancreas, the spleen, and many other glands, its presence being probably due to the action of the enzymes present in the gland upon the proteins of that gland. In pathological conditions it is found in the urine. L. contains one symmetrical carbon atom. The levo- form is the one found in nature. Upon feeding the racemic form, the unnatural component, the dextro- form, is excreted in the urine; the other form is retained or used up in the organism. [Gr.]
By Smith Ely Jelliffe
Word of the day
Proto Oncogene Proteins c erbB 2
- cell surface protein-tyrosine kinase that is found to be overexpressed in significant number adenocarcinomas. It has extensive homology can heterodimerize EGF EPIDERMAL GROWTH FACTOR), 3 receptor (RECEPTOR, 3) and the 4 receptor. Activation of erbB-2 receptor occurs during heterodimer formation with a ligand-bound erbB family members. EC 2.7.11.-.