The molecule is a heterodetic cyclic peptide composed of 65 amino acids joined in sequence and cyclised by three disulfide bridges between cysteine residues 6-14, 16-28 and 22-39. It is a highly specific inhibitor of thrombin and used as an anticoagulant in patients with heparin-induced thrombocytopenia. It has a role as an EC 3.4.21.5 (thrombin) inhibitor and an anticoagulant. It is a polypeptide, a heterodetic cyclic peptide and an organic disulfide.
(2S)-5-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-1-[(2S,3S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[(2S)-2-[[2-[[(2S)-2-[[(2S)-4-amino-2-[[(2S)-2-[[(2S)-2-[[(2S)-5-amino-2-[[(2S)-1-[(2S)-6-amino-2-[[(2S)-1-[(2S,3R)-2-[[2-[[(2S)-2-[[2-[[(2S,3R)-2-[[(2S)-2-[[(1R,6R,9S,12S,15S,18S,24S,27S,33S,36S,39R,44R,47S,53S,56S,59S,67S,73S,76S)-15,76-bis(4-aminobutyl)-44-[[(2S)-2-[[(4R,7S,10S,13S,19S,22S,25S,28R)-28-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-[[(2S,3R)-2-[[(2S)-2-amino-4-methylpentanoyl]amino]-3-hydroxybutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-3-hydroxybutanoyl]amino]-3-carboxypropanoyl]amino]-10-(2-amino-2-oxoethyl)-13-(3-amino-3-oxopropyl)-22-(2-carboxyethyl)-25-[(1R)-1-hydroxyethyl]-19-(hydroxymethyl)-7-(2-methylpropyl)-6,9,12,15,18,21,24,27-octaoxo-1,2-dithia-5,8,11,14,17,20,23,26-octazacyclononacosane-4-carbonyl]amino]-4-methylpentanoyl]amino]-12,56,73-tris(2-amino-2-oxoethyl)-9,67-bis(3-amino-3-oxopropyl)-36-[(2S)-butan-2-yl]-18,47-bis(2-carboxyethyl)-24-(carboxymethyl)-27,53-bis(hydroxymethyl)-33-(2-methylpropyl)-8,11,14,17,20,23,26,29,32,35,38,45,48,51,54,57,60,62,65,68,71,74,77-tricosaoxo-59-propan-2-yl-3,4,41,42-tetrathia-7,10,13,16,19,22,25,28,31,34,37,46,49,52,55,58,61,63,66,69,72,75,78-tricosazabicyclo[37.22.17]octaheptacontane-6-carbonyl]amino]-3-methylbutanoyl]amino]-3-hydroxybutanoyl]amino]acetyl]amino]-4-carboxybutanoyl]amino]acetyl]amino]-3-hydroxybutanoyl]pyrrolidine-2-carbonyl]amino]hexanoyl]pyrrolidine-2-carbonyl]amino]-5-oxopentanoyl]amino]-3-hydroxypropanoyl]amino]-3-(1H-imidazol-4-yl)propanoyl]amino]-4-oxobutanoyl]amino]-3-carboxypropanoyl]amino]acetyl]amino]-3-carboxypropanoyl]amino]-3-phenylpropanoyl]amino]-4-carboxybutanoyl]amino]-4-carboxybutanoyl]amino]-3-methylpentanoyl]pyrrolidine-2-carbonyl]amino]-4-carboxybutanoyl]amino]-4-carboxybutanoyl]amino]-3-(4-hydroxyphenyl)propanoyl]amino]-4-methylpentanoyl]amino]-5-oxopentanoic acid