N(6)-(1-Carboxyethyl)Lysine

**Semantic type:** Amino Acid, Peptide, or Protein

**Definition:** A lysine derivative found in proteins where the epsilon nitrogen of the amino acid residue is modified by a carboxyethyl group. This advanced glycation end product (AGE) is elevated in certain diseases and may be associated with aging.

**Synonyms:** - CEL - L-Lysine, N6-(1-Carboxyethyl)- - N(Epsilon)-(1-(1-Carboxy)Ethyl)Lysine - N(Epsilon)-(Carboxyethyl)Lysine