1 Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California. Electronic address: gdebelouchina@ucsd.edu.
2 Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California. Electronic address: klasker@scripps.edu.
3 Centre for Protein Science, Design and Engineering, Department of Biological Sciences, and Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Punjab, India. Electronic address: mukhopadhyay@iisermohali.ac.in.