What is leucine?

  • (noun): A white crystalline amino acid occurring in proteins that is essential for nutrition; obtained by the hydrolysis of most dietary proteins.

Leucine

Leucine (abbreviated as Leu or L) is a branched-chain α-amino acid with the chemical formula HO2CCH(NH2)CH2CH(CH3)2. Leucine is classified as a hydrophobic amino acid due to its aliphatic isobutyl side chain. It is encoded by six codons (UUA, UCG, CUU, CUC, CUA, and CUG) and is a major component of the subunits in ferritin, astacin and other 'buffer' proteins. Leucine is an essential amino acid, meaning that the human body cannot synthesize it, and it therefore must be ingested.

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Some articles on leucine:

LGR6
... Leucine-rich repeat-containing G-protein coupled receptor 6 is a protein that in humans is encoded by the LGR6 gene ... This gene encodes a member of the leucine-rich repeat-containing subgroup of the G protein-coupled 7-transmembrane protein superfamily ... with a large N-terminal extracellular domain that contains leucine-rich repeats important for the formation of a horseshoe-shaped interaction motif for ligand binding ...
Leucine - Food Additive
... As a food additive, L-Leucine has E number E641 and is classified as a flavor enhancer. ...
Leucine Transaminase
... In enzymology, a leucine transaminase (EC 2.6.1.6) is an enzyme that catalyzes the chemical reaction L-leucine + 2-oxoglutarate 4-methyl-2-oxopentanoate + L-glutamate Thus, the two substrates of this enzyme ... Other names in common use include L-leucine aminotransferase, leucine 2-oxoglutarate transaminase, leucine aminotransferase, and leucine-alpha-ketoglutarate transaminase ... This enzyme participates in 3 metabolic pathways valine, leucine and isoleucine degradation, valine, leucine and isoleucine biosynthesis, and pantothenate and coa ...
Glutamate-glutamine Cycle - Ammonia Homeostasis - Amino Acid Shuttles and Transporting Ammonia - Leucine
... glutamate dehydrogenase reaction in the neurons is transaminated into α-ketoisocaproate to form leucine, which is exported to the astrocytes ...
Leucines
... The leucines are primarily the four isomeric amino acids leucine, isoleucine, tert-leucine and norleucine ... Leucine and isoleucine belong to the proteinogenic amino acids the others are non-natural ... Including the stereoisomers, six further isomers could be added -leucine, -isoleucine, -allo-isoleucine, -allo-isoleucine, -tert-leucine and -norleucine ...