%0 Journal Article %A Brogi, Simone %A Giovani, Simone %A Brindisi, Margherita %A Gemma, Sandra %A Novellino, Ettore %A Campiani, Giuseppe %A Blackman, Michael J %A Butini, Stefania %D 2020 %T In silico study of subtilisin-like protease 1 (SUB1) from different Plasmodium species in complex with peptidyl-difluorostatones and characterization of potent pan-SUB1 inhibitors %U https://crick.figshare.com/articles/journal_contribution/In_silico_study_of_subtilisin-like_protease_1_SUB1_from_different_Plasmodium_species_in_complex_with_peptidyl-difluorostatones_and_characterization_of_potent_pan-SUB1_inhibitors/12607946 %2 https://crick.figshare.com/ndownloader/files/23652326 %K Difluorostatone-based inhibitors %K Homology modeling %K Malaria %K Molecular docking %K Pharmacophore modeling %K Subtilisin-like protease %K Amino Acid Sequence %K Antimalarials %K Binding Sites %K Computer Simulation %K Enzyme Inhibitors %K Ligands %K Models, Molecular %K Molecular Conformation %K Molecular Docking Simulation %K Molecular Dynamics Simulation %K Molecular Sequence Data %K Plasmodium %K Protein Binding %K Protozoan Proteins %K Quantitative Structure-Activity Relationship %K Sequence Alignment %K Subtilisins %K Blackman FC001043 %K 0307 Theoretical and Computational Chemistry %K 0601 Biochemistry and Cell Biology %K 0803 Computer Software %K Biophysics %K Medicinal & Biomolecular Chemistry %X Plasmodium falciparum subtilisin-like protease 1 (SUB1) is a novel target for the development of innovative antimalarials. We recently described the first potent difluorostatone-based inhibitors of the enzyme ((4S)-(N-((N-acetyl-l-lysyl)-l-isoleucyl-l-threonyl-l-alanyl)-2,2-difluoro-3-oxo-4-aminopentanoyl)glycine (1) and (4S)-(N-((N-acetyl-l-isoleucyl)-l-threonyl-l-alanylamino)-2,2-difluoro-3-oxo-4-aminopentanoyl)glycine (2)). As a continuation of our efforts towards the definition of the molecular determinants of enzyme-inhibitor interaction, we herein propose the first comprehensive computational investigation of the SUB1 catalytic core from six different Plasmodium species, using homology modeling and molecular docking approaches. Investigation of the differences in the binding sites as well as the interactions of our inhibitors 1,2 with all SUB1 orthologues, allowed us to highlight the structurally relevant regions of the enzyme that could be targeted for developing pan-SUB1 inhibitors. According to our in silico predictions, compounds 1,2 have been demonstrated to be potent inhibitors of SUB1 from all three major clinically relevant Plasmodium species (P. falciparum, P. vivax, and P. knowlesi). We next derived multiple structure-based pharmacophore models that were combined in an inclusive pan-SUB1 pharmacophore (SUB1-PHA). This latter was validated by applying in silico methods, showing that it may be useful for the future development of potent antimalarial agents. %I The Francis Crick Institute