RT Conference Proceedings T1 3D structure and conformational changes in DNA topoisomerase I of Streptococcus pneumoniae A1 Otero, Lisandro H. A1 García Esteban, María Teresa A1 González de la Campa, Adela A1 Hermoso, Juan Antonio AB Streptococcus pneumoniae is a normal component of the microflora of the human upper respiratory tract and an opportunistic pathogen, however, under appropriate conditions, cause serious and life-threatening infections such as pneumonia, meningitis and septicemia. DNA topoisomerases participate in almost all cellular functions involving DNA transactions, solving the topological problems associated with its replication, transcription, and recombination. Here we report the crystallization and tridimensional structure by X-rays of soluble construct (domain II and III) of S. pneumoniae TopA. The structure showed relevant changes in the domain II in comparison with other topoisomerases solved. This domain can be crucial as target to design new inhibitors for the treatment of S. pneumoniae infections. YR 2013 FD 2013 LK https://hdl.handle.net/20.500.14352/130831 UL https://hdl.handle.net/20.500.14352/130831 LA eng DS Docta Complutense RD 25 ene 2026