Department of Biochemistry and Molecular Biology, Gordon Center for Integrative Science, University of Chicago, Chicago, Illinois, United States of America.|Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America.|Institute for Computational Molecular Science, Temple University, Philadelphia, Pennsylvania, United States of America.|Department of Biochemistry and Molecular Biology, Gordon Center for Integrative Science, University of Chicago, Chicago, Illinois, United States of America.|Beckman Institute, University of Illinois at Urbana-Champaign, Urbana, Illinois, United States of America.|Department of Biochemistry and Molecular Biology, Gordon Center for Integrative Science, University of Chicago, Chicago, Illinois, United States of America.