Structure, mechanism and crystallographic fragment screening of the SARS-CoV-2 NSP13 helicase oleh Joseph A. Newman, Alice Douangamath, Setayesh Yadzani, Yuliana Yosaatmadja, Antony Aimon, José Brandão-Neto, Louise Dunnett, Tyler Gorrie-stone, Rachael Skyner, Daren Fearon, Matthieu Schapira, Frank von Delft, Opher Gileadi