Bioinformatics and Systems Biology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92307, USA and Center for Structural Genomics of Infectious Diseases (CSGID), Chicago, IL 60611, USA.|Bioinformatics and Systems Biology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92307, USA and Center for Structural Genomics of Infectious Diseases (CSGID), Chicago, IL 60611, USA.|Bioinformatics and Systems Biology Program, Sanford Burnham Prebys Medical Discovery Institute, La Jolla, CA 92307, USA and Center for Structural Genomics of Infectious Diseases (CSGID), Chicago, IL 60611, USA.