HUMAN MITOCHONDRIAL TOPOISOMERASE I 3D structure of human dna topoisomerase i (70 kda) as a reference was obtained by X-ray crystallography (PDB ID: 1K4T) (PROC.NAT.ACAD.SCI.USA,V. 99,15387,2002). This model is human mitochondrial topoisomerase I constructed by FAMS Ligand&Complex based on 1K4T. HEADER HUMAN MITOCHONDRIAL TOPOISOMERASE I 04-NOV-03 REMARK CHAIN_A gb_AAH44646.1(38-602) HETNAM TTC (S)-10-[(DIMETHYLAMINO)METHYL]-4-ETHYL-4,9-DIHYDROXY- HETNAM 2 TTC 1H-PYRANO[3',4':6,7]INOLIZINO[1,2-B]-QUINOLINE-3, HETNAM 3 TTC 14(4H,12H)-DIONE HETNAM TTG 2-(1-DIMETHYLAMINOMETHYL-2-HYDROXY-8-HYDROXYMETHYL-9- HETNAM 2 TTG OXO-9,11-DIHYDRO-INDOLIZINO[1,2-B]QUINOLIN-7-YL)-2- HETNAM 3 TTG HYDROXY-BUTYRIC ACID HETNAM PG4 TETRAETHYLENE GLYCOL HETNAM HG MERCURY (II) ION Figure legend: ligand is shown by cpk or stick.