M R Redinbo et al.
Biochemistry, 39(23), 6832-6840 (2000-06-08)
Human topoisomerase I helps to control the level of DNA supercoiling in cells and is vital for numerous DNA metabolic events, including replication, transcription, and recombination. The 2.6 A crystal structure of human topoisomerase I in noncovalent complex with a