# loop_ _pdbx_reference_entity_grouping.family_prd_id _pdbx_reference_entity_grouping.prd_id _pdbx_reference_entity_grouping.compound_details FAM_000411 PRD_000001 ; TRIOSTIN IS A BICYCLIC OCTADEPSIPEPTIDE, A MEMBER OF THE QUINOXALINE CLASS OF ANTIBIOTICS. HERE, TRIOSTIN IS REPRESENTED BY GROUPING TOUGHER THE SEQUENCE (SEQRES) AND THE TWO LIGANDS (HET) QUI ; FAM_000411 PRD_000003 ; QUINOMYCIN IS A BICYCLIC OCTADEPSIPEPTIDE. RESIDUE 1 IS LINKED TO RESIDUE 8 AND A THIOACETAL BOND BETWEEN RESIDUES 3 AND 7. THE QUINOXALINE CHROMOPHORE AND THE D-SERINE WERE MERGED TO ONE RESIDUE, UDS, SO TO FIT PDB CONVENTION OF LINEAR N-TERM TO C-TERM SEQUENCE. ; FAM_000411 PRD_000004 ; THE ECHINOMYCIN IS A BICYCLIC OCTADEPSIPEPTIDE, A MEMBER OF THE QUINOXALINE CLASS OF ANTIBIOTICS. HERE, ECHINOMYCIN IS REPRESENTED BY GROUPING TOUGHER THE SEQUENCE (SEQRES) AND THE TWO LIGANDS (HET) QUI. ;