Conformational dynamics and asymmetry in multimodal inhibition of membrane-bound pyrophosphatases

Abstract Membrane-bound pyrophosphatases (mPPases) are homodimeric proteins that hydrolyse pyrophosphate and pump H+/Na+ across membranes. They are crucial for the virulence of protist pathogens, making them attractive drug targets. In this study, we investigate the inhibitory effects of seven distinct bisphosphonates against Thermotoga maritima mPPase to explore their mode of action and assist in future small molecule inhibitor development. We solved two structures of mPPase bound to the inhibitors in the enzyme active sites and probed the conformational dynamics of mPPase under multiple inhibitors and functionally relevant conditions by double electron-electron resonance (DEER) spectroscopy. We found that mPPase adopts distinct conformational equilibria in solution in the presence of different inhibitors, including states consistent with asymmetric binding in the active site (closed-open), but a symmetric apo-like conformation on the periplasmic side (open-open). Combined with solid-s..., , # Data from: Conformational dynamics and asymmetry in multimodal inhibition of membrane-bound pyrophosphatases Dataset DOI: [10.5061/dryad.m905qfvfj](https://doi.org/10.5061/dryad.m905qfvfj) ## Description of the data and file structure README: **Conformational dynamics and asymmetry in multimodal inhibition of membrane-bound pyrophosphatases** Description of the data and file structure These data are the source data for TmPPase activity in the presence of various compounds, TmPPase electrometric measurement, and primary data of TmPPase for all measurement variations. The files are structured according to the table below: | Figure | Panel | ID | Metadata | Raw data ...,