has role polypeptide homodetic cyclic peptide antibacterial agent bacitracin A Bacitracin A2a Bacitracin F, 1-(N-((2-(1-amino-2-methylbutyl)-4,5-dihydro-4-thiazolyl)carbonyl)-l-leucine)- CHEBI:35862 A homodetic cyclic peptide consisting of (4<i>R</i>)-2-[(1<i>S</i>,2<i>S</i>)-1-amino-2-methylbutyl]-4,5-dihydro-1,3-thiazole-4-carboxylic acid attached head-to-tail to <small>L</small>-leucyl,<small>D</small>-glutamyl, <small>L</small>-lysyl, <small>D</small>-ornityl, <small>L</small>-isoleucyl, <small>D</small>-phenylalanyl, <small>L</small>-histidyl. <small>D</small>-aspartyl and <small>L</small>-asparaginyl residues coupled in sequence and cyclised by condensation of the side-chain amino group of the <small>L</small>-lysyl residue with the C-terminal carboxylic acid group. It is the major component of bacitracin. chebi_ontology