id author title date pages extension mime words sentences flesch summary cache txt cord-102151-26lumewy Cox, Robert M. Therapeutic Targeting of Measles Virus Polymerase with ERDRP-0519 Suppresses All RNA Synthesis Activity 2020-09-24 .txt text/plain 1797 92 43 Results demonstrate that unlike all other mononegavirus small molecule inhibitors identified to date, ERDRP-0519 inhibits all phosphodiester bond formation in both de novo initiation of RNA synthesis at the promoter and RNA elongation by a committed polymerase complex. Photocrosslinking and resistance profiling-informed ligand docking revealed that this unprecedented mechanism of action of ERDRP-0519 is due to simultaneous engagement of the L protein polyribonucleotidyl transferase (PRNTase)-like domain and the flexible intrusion loop by the compound, pharmacologically locking the polymerase in pre-initiation conformation. Photocrosslinking-based target site 27 mapping demonstrated that this class-defining prototype inhibitor stabilizes a pre-initiation conformation 28 of the viral polymerase complex that sterically cannot accommodate template RNA. Photocrosslinking-based target site 27 mapping demonstrated that this class-defining prototype inhibitor stabilizes a pre-initiation conformation 28 of the viral polymerase complex that sterically cannot accommodate template RNA. ./cache/cord-102151-26lumewy.txt ./txt/cord-102151-26lumewy.txt