1. Department of Integrative Structural and Computational Biology, The Scripps Research Institute, La Jolla, California 92037, USA;
2. Department of Information Technologies, Instituto Tecnológico Superior de Irapuato, 36300 Irapuato, Guanajuato, Mexico
3. Biomolecular Diversity Laboratory, Centro de Investigación y de Estudios Avanzados Unidad Monterrey, 66600 Apodaca, Nuevo León, Mexico
4. Department of Computational Medicine and Bioinformatics, Department of Chemistry, and Department of Biophysics, University of Michigan, Ann Arbor, Michigan 48109, USA