7S90
Cryogenic Human Hsp90a-NTD bound to adenine
Summary for 7S90
| Entry DOI | 10.2210/pdb7s90/pdb |
| Descriptor | Heat shock protein HSP 90-alpha, ADENINE (3 entities in total) |
| Functional Keywords | chaperone protein, signal transduction, heat shock, chaperone, hydrolase |
| Biological source | Homo sapiens (Human) |
| Total number of polymer chains | 1 |
| Total formula weight | 26875.05 |
| Authors | Stachowski, T.R.,Vanarotti, M.,Lopez, K.,Fischer, M. (deposition date: 2021-09-20, release date: 2022-08-03, Last modification date: 2024-04-03) |
| Primary citation | Stachowski, T.R.,Vanarotti, M.,Seetharaman, J.,Lopez, K.,Fischer, M. Water Networks Repopulate Protein-Ligand Interfaces with Temperature. Angew.Chem.Int.Ed.Engl., 61:e202112919-e202112919, 2022 Cited by PubMed Abstract: High-resolution crystal structures highlight the importance of water networks in protein-ligand interactions. However, as these are typically determined at cryogenic temperature, resulting insights may be structurally precise but not biologically accurate. By collecting 10 matched room-temperature and cryogenic datasets of the biomedical target Hsp90α, we identified changes in water networks that impact protein conformations at the ligand binding interface. Water repositioning with temperature repopulates protein ensembles and ligand interactions. We introduce Flipper conformational barcodes to identify temperature-sensitive regions in electron density maps. This revealed that temperature-responsive states coincide with ligand-responsive regions and capture unique binding signatures that disappear upon cryo-cooling. Our results have implications for discovering Hsp90 selective ligands, and, more generally, for the utility of hidden protein and water conformations in drug discovery. PubMed: 35648650DOI: 10.1002/anie.202112919 PDB entries with the same primary citation |
| Experimental method | X-RAY DIFFRACTION (1.79 Å) |
Structure validation
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