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Endoproteinase Lys-C is a protease that cleaves proteins on the C-terminal side of lysine residues. This enzyme is naturally found in the bacterium Lysobacter enzymogenes and is commonly used in protein sequencing. [1] [2] Lys-C activity is optimal in the pH range 7.0 - 9.0. [3]
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Lysine ball and stick model spinning. Lysine (symbol Lys or K) [2] is an α-amino acid that is a precursor to many proteins.Lysine contains an α-amino group (which is in the protonated −NH + 3 form when the lysine is dissolved in water at physiological pH), an α-carboxylic acid group (which is in the deprotonated −COO − form when the lysine is dissolved in water at physiological pH ...
The precursor amino acid lysine contains two amino groups, one at the α-carbon and one at the ε-carbon. Either can be the location of polymerization , resulting in α-polylysine or ε-polylysine. Polylysine is a homopolypeptide belonging to the group of cationic polymers : at pH 7, polylysine contains a positively charged hydrophilic amino group.
Lysine is commonly used as a treatment; however, in a 2015 systematic review, the authors investigated all clinical trials with cats as well as in vitro studies and concluded that lysine supplementation is likely not effective for the treatment or prevention of feline herpesvirus 1 infection. [15]
β-Lysine (3,6-diaminohexanoic acid [1]) is an amino acid produced by platelets during coagulation and is directly antibacterial by causing lysis of many Gram positive bacteria by acting as a cationic detergent.
Acetyllysine (or acetylated lysine) is an acetyl-derivative of the amino acid lysine. There are multiple forms of acetyllysine: this article is about N-ε-acetyl-L-lysine; another form is N-α-acetyl-L-lysine. In proteins, the acetylation of lysine residues is an important mechanism of epigenetics.
The lysine price-fixing conspiracy was an organized effort during the mid-1990s to raise the price of the animal feed additive lysine. It involved five companies that had commercialized high-tech fermentation technologies, including Archer Daniels Midland (ADM), Ajinomoto, Kyowa Hakko Kogyo, Sewon America Inc. and Cheil Jedang Ltd.