Structure of a Complex between E. coli DNA Topoisomerase I and Single-Stranded DNA.
Perry, K., Mondragon, A.(2003) Structure 11: 1349-1358
- PubMed: 14604525 
- DOI: 10.1016/j.str.2003.09.013
- Primary Citation of Related Structures:  
1MW8, 1MW9 - PubMed Abstract: 
In order to gain insights into the mechaism of ssDNA binding and recognition by Escherichia coli DNA topoisomerase I, the structure of the 67 kDa N-terminal fragment of topoisomerase I was solved in complex with ssDNA. The structure reveals a new conformational stage in the multistep catalytic cycle of type IA topoisomerases ...