A three-part cytoskeletal structure in kinetoplastid species linking mitochondrial DNA organised in a kinetoplast through the mitochondrial membranes to the basal body. [ http://www.ncbi.nlm.nih.gov/pubmed/24821793 http://www.ncbi.nlm.nih.gov/pubmed/27168148 http://www.ncbi.nlm.nih.gov/pubmed/18059470 http://www.ncbi.nlm.nih.gov/pubmed/12802053 ]