N(6)-Carboxymethyllysine

**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 carboxymethyl group. This advanced glycation end product (AGE) is elevated in certain diseases and is associated with aging.

**Synonyms:** - CML - L-Lysine, N6-(Carboxymethyl)- - N(6)-CARBOXYMETHYLLYSINE - N(Epsilon)-(Carboxymethyl)Lysine - N(Epsilon)-Carboxymethyl-L-Lysine - NECML