7GS6

Crystal structure of SARS-CoV-2 main protease in complex with cpd-29

Summary for 7GS6

• Entry DOI: 10.2210/pdb7gs6/pdb
• Group deposition: Fragment-based screening targeting an open form of the SARS-CoV-2 main protease binding pocket (G_1002282)
• Descriptor: 3C-like proteinase nsp5, DIMETHYL SULFOXIDE, (3S)-4,7-dichloro-3-hydroxy-1,3-dihydro-2H-indol-2-one, ... (6 entities in total)
• Functional Keywords: protease, sars-cov-2, viral protein
• Biological source: Severe acute respiratory syndrome coronavirus 2 (2019-nCoV, SARS-CoV-2)
• Total number of polymer chains: 2
• Total formula weight: 68894.37

Authors

Huang, C.-Y.,Metz, A.,Sharpe, M.,Sweeney, A. (deposition date: 2023-11-14, release date: 2024-02-14, Last modification date: 2024-11-20)

Primary citation

Huang, C.Y.,Metz, A.,Lange, R.,Artico, N.,Potot, C.,Hazemann, J.,Muller, M.,Dos Santos, M.,Chambovey, A.,Ritz, D.,Eris, D.,Meyer, S.,Bourquin, G.,Sharpe, M.,Mac Sweeney, A.
Fragment-based screening targeting an open form of the SARS-CoV-2 main protease binding pocket.
Acta Crystallogr D Struct Biol, 80:123-136, 2024

PubMed Abstract: To identify starting points for therapeutics targeting SARS-CoV-2, the Paul Scherrer Institute and Idorsia decided to collaboratively perform an X-ray crystallographic fragment screen against its main protease. Fragment-based screening was carried out using crystals with a pronounced open conformation of the substrate-binding pocket. Of 631 soaked fragments, a total of 29 hits bound either in the active site (24 hits), a remote binding pocket (three hits) or at crystal-packing interfaces (two hits). Notably, two fragments with a pose that was sterically incompatible with a more occluded crystal form were identified. Two isatin-based electrophilic fragments bound covalently to the catalytic cysteine residue. The structures also revealed a surprisingly strong influence of the crystal form on the binding pose of three published fragments used as positive controls, with implications for fragment screening by crystallography.

PubMed: 38289714
DOI: 10.1107/S2059798324000329

Experimental method

X-RAY DIFFRACTION (1.62 Å)