1. Centre of Advanced Study in Crystallography and Biophysics, University of Madras, Chennai, India
2. Department of Biological Sciences, Graduate School of Science, Osaka University, Toyonaka, Osaka, Japan
3. Structural Biology Laboratory, RIKEN Yokohama Institute, RIKEN, Tsurumi, Yokohama, Japan
4. Laboratory for Transcription Structural Biology, RIKEN Center for Biosystems Dynamic Research, RIKEN Yokohama Institute, Tsurumi, Yokohama, Japan