lysine

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Lysine
Lysine (abbreviated as Lys or K) is an α-amino acid with the chemical formula HO2CCH(NH2)(CH2)4NH2. This amino acid is an essential amino acid, which means that humans cannot synthesize it. Its codons are AAA and AAG. Lysine is a base, as are arginine and histidine. The ε-amino group often participates in hydrogen bonding and as a general base in catalysis. Common posttranslational modifications include methylation of the ε-amino group, giving methyl-, dimethyl-, and trimethyllysine. The latter occurs in calmodulin. Other posttranslational modifications include acetylationCollagen contains hydroxylysine which is derived from lysine by lysyl hydroxylase. O-Glycosylation of lysine residues in the endoplasmic reticulum or Golgi apparatus is used to mark certain proteins for secretion from the cell.
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Lysine
La L-lysine est un des 20 acides aminés les plus courants constituant les protéines. Elle possède une chaîne latérale basique avec une fonction amine NH2 et quatre groupements CH2 sur celle-ci. C'est un acide aminé indispensable, il ne peut pas être synthétisé par l'organisme, et doit donc être apporté par l'alimentation.
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Lysin
Lysin (Abk. Lys oder K) ist in seiner natürlichen L-Form eine essentielle proteinogene Aminosäure.
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Lizyna
Lizyna (nazwa skrótowa Lys, skrót jednoliterowy K) jest organicznym związkiem chemicznymniepolarnym aminokwasem należącym do 20 aminokwasów białkowych, najbardziej rozpowszechnionych na Ziemi. Należy też do grupy aminokwasów niezbędnych (liczącej 8 - 10 substancji), które nie mogą być syntetyzowane w organizmie człowieka i muszą być dostarczane z dietą.
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Lisina
La lisina è un amminoacido polare, la sua molecola è chirale.L'enantiomero L è uno dei 20 amminoacidi ordinari, il suo gruppo laterale reca un gruppo amminico che le conferisce un comportamento basico.Negli esseri umani è essenziale, cioè va assunta tramite l'alimentazione, dato che l'organismo umano non è in grado di sintetizzarla. Può essere usata come integratore alimentare nella prevenzione dell'herpes.
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