Search results
Results from the WOW.Com Content Network
Lysine (symbol Lys or K) [2] is an α-amino acid that is a precursor to many proteins.It contains an α-amino group (which is in the protonated −NH + 3 form when dissolved in water), an α-carboxylic acid group (which is in the deprotonated −COO − form when dissolved in water), and a side chain lysyl ((CH 2) 4 NH 2), classifying it as a basic, charged (at physiological pH), aliphatic ...
Lysine Exporters are a superfamily of transmembrane proteins [1] [2] which export amino acids, lipids and heavy metal ions. [2] They provide ionic homeostasis , play a role in cell envelope assembly, and protect from excessive concentrations of heavy metals in cytoplasm .
An essential amino acid, or indispensable amino acid, is an amino acid that cannot be synthesized from scratch by the organism fast enough to supply its demand, and must therefore come from the diet. Of the 21 amino acids common to all life forms, the nine amino acids humans cannot synthesize are valine, isoleucine, leucine, methionine ...
A protein is a polyamide. Secondary structure: regularly repeating local structures stabilized by hydrogen bonds. The most common examples are the α-helix, β-sheet and turns. Because secondary structures are local, many regions of different secondary structure can be present in the same protein molecule.
In case of humans there are 9 EAAs: histidine, isoleucine, leucine, lysine, methionine, phenylalanine, threonine, tryptophan, and valine. [1] EAAs are provided in both animal and plant-based food. The EAAs in plants vary greatly due to the vast variation in the plant world and, in general, plants have much lower content of proteins than animal ...
^a EINECS number 200-294-2 (Lysine) ^a CID 866 from PubChem (DL-Lysine) ^a CID 5962 from PubChem (L-Lysine) This page was last edited on 12 April 2023, at 11:47 ...
A complete protein or whole protein is a food source of protein that contains an adequate proportion of each of the nine ... Lysine: 51 5.1% 7.27% 6.1% 6.08% ...
Cysteine (symbol Cys or C; [ 5 ] / ˈsɪstɪiːn /) [ 6 ] is a semiessential [ 7 ] proteinogenic amino acid with the formula HOOC−CH (−NH2)−CH2−SH. The thiol side chain in cysteine often participates in enzymatic reactions as a nucleophile. Cysteine is chiral, but both D and L -cysteine are found in nature.