## SecA HDX-MS protein flexibility data This is an example dataset of HDX-MS derived protein flexibility, expressed as Linderström-Lang Gibbs free energies (ΔG/ΔΔG). The ΔG values obtained using PyHDX ([DOI: 10.1021/acs.analchem.1c02155](https://pubs.acs.org/doi/10.1021/acs.analchem.1c02155)) There are three protein states, SecA monomer, SecA dimer and SecA with C-tail deletion, each state as apo (ΔG) and ADP-bound (ΔΔG) More details on SecA dynamics can be found here: [A nexus of intrinsic dynamics underlies translocase priming](https://www.cell.com/structure/fulltext/S0969-2126(21)00113-1)