Department of Computer Engineering, Middle East Technical University, Ankara, Turkey.|Cancer System Biology Laboratory (CanSyL), Graduate School of Informatics, Middle East Technical University, Ankara, Turkey.|European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, Hinxton CB10 1SD, UK.|Department of Computer Engineering, Middle East Technical University, Ankara, Turkey.|Department of Computer Engineering, Middle East Technical University, Ankara, Turkey.|Cancer System Biology Laboratory (CanSyL), Graduate School of Informatics, Middle East Technical University, Ankara, Turkey and European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL-EBI), Cambridge, Hinxton CB10 1SD, UK.