The molecule is a polypeptide comprising the 12-amino acid sequence KATIGFEVQEE where the N-terminal lysyl (K) residue has an acetyl group at the Nalpha-position and a lipoyl group on the side-chain. A component of the inner lipoyl domain of the second enzyme of the pyruvate dehydrogenase complex (PDC-E2), to which antibodies are raised in the autoimmune disease primary biliary cirrhosis. It has a role as an epitope. It is a polypeptide, a N(alpha)-acetylpeptide and a lipopeptide.
(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S,3S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-acetamido-3-carboxypropanoyl]amino]-6-[5-[(3R)-dithiolan-3-yl]pentanoylamino]hexanoyl]amino]propanoyl]amino]-3-hydroxybutanoyl]amino]-3-methylpentanoyl]amino]acetyl]amino]-3-phenylpropanoyl]amino]-4-carboxybutanoyl]amino]-3-methylbutanoyl]amino]-5-amino-5-oxopentanoyl]amino]-4-carboxybutanoyl]amino]pentanedioic acid