# loop_ _pdbx_reference_entity_group.family_prd_id _pdbx_reference_entity_group.prd_id _pdbx_reference_entity_group.id _pdbx_reference_entity_group.name _pdbx_reference_entity_group.descriptioon FAM_000411 PRD_000001 1 "TRIOSTIN" ; TRIOSTIN IS A IS A BICYCLIC OCTADEPSIPEPTIDE. BICYCLIZATION IS ACHIEVED BY LINKING THE N- AND THE C- TERMINI, AND A DISULPHIDE BOND BETWEEN RESIDUES 3 AND 7. THE TWO QUINOXALINE CHROMOPHORES ARE LINKED TO THE D-SERINE RESIDUES, RESIDUES 1 AND 5. ; FAM_000411 PRD_000004 1 "ECHINOMYCIN" ; ECHINOMYCIN IS A IS A BICYCLIC OCTADEPSIPEPTIDE. BICYCLIZATION IS ACHIEVED BY LINKING THE N- AND THE C- TERMINI, AND A THE THIOACETAL BOND BETWEEN RESIDUES 3 AND 7. THE TWO QUINOXALINE CHROMOPHORES ARE LINKED TO THE D-SERINE RESIDUES, RESIDUES 1 AND 5. ;