L-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 acetylation. Collagen 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."""@en ; dct:identifier "drugbank:DB00123" ; dct:title "L-Lysine"@en ; adv:Drug ; rdfs:label "L-Lysine [drugbank:DB00123]"@en ; rdfs:seeAlso <http://www.drugbank.ca/drugs/DB00123> , <http://www.pdrhealth.com/drug_info/nmdrugprofiles/nutsupdrugs/lly_0166.shtml> . }