>1k4s_B mol:na length:10 5'-D(*AP*AP*AP*AP*AP*GP*AP*CP*(5IU)P*(5IU))-3'
AAAAAGACUU
>1k4s_C mol:na length:12 5'-D(*(SPT)P*GP*AP*AP*AP*AP*AP*(5IU)P*(5IU)P*(5IU)P*(5IU)P*T)-3'
TGAAAAAUUUUT
>1k4s_D mol:na length:22 5'-D(*AP*AP*AP*AP*AP*TP*(IDO)UP*(IDO)UP*(IDO)UP*(IDO)UP*CP*AP*AP*AP*GP*(IDO)UP*CP*(IDO)UP*(IDO)UP*(IDO)UP*(IDO)UP*T)-3'
AAAAATUUUUCAAAGUCUUUUT
>1k4s_A mol:protein length:592 DNA topoisomerase I
KKPKNKDKDKKVPEPDNKKKKPKKEEEQKWKWWEEERYPEGIKWKFLEHKGPVFAPPYEPLPENVKFYYDGKVMKLSPKAEEVATFFAKMLDHEYTTKEIFRKNFFKDWRKEMTNEEKNIITNLSKCDFTQMSQYFKAQTEARKQMSKEEKLKIKEENEKLLKEYGFCIMDNHKERIANFKIEPPGLFRGRGNHPKMGMLKRRIMPEDIIINCSKDAKVPSPPPGHKWKEVRHDNKVTWLVSWTENIQGSIKYIMLNPSSRIKGEKDWQKYETARRLKKCVDKIRNQYREDWKSKEMKVRQRAVALYFIDKLALRAGNEKEEGETADTVGCCSLRVEHINLHPELDGQEYVVEFDFLGKDSIRYYNKVPVEKRVFKNLQLFMENKQPEDDLFDRLNTGILNKHLQDLMEGLTAKVFRTYNASITLQQQLKELTAPDENIPAKILSYNRANRAVAILCNHQRAPPKTFEKSMMNLQTKIDAKKEQLADARRDLKSAKADAKVMKDAKTKKVVESKKKAVQRLEEQLMKLEVQATDREENKQIALGTSKLNYLDPRITVAWCKKWGVPIEKIYNKTQREKFAWAIDMADEDYEF