DLS data: DLS_spectra.xlsx - 3 tabs; SMA_OmpF - SMALP nanodiscs incorporating OmpF membrane protein SMA_Gramicidin - SMALP nanodiscs incorporating Gramicidin DMPC-only_discs - DMPC only SMALPs CD Spectra: CD_spectra_SMA_OmPF_values.xlsx - CD data for OmpF-nanodiscs CD_Stride_crystal_comparisons.xlsx - CD predictions for crystal trimer (PDB ID: 2OMF) SEC chromatograms: SEC_DMPC_only_nanodiscs_254nm - size exclusion chromatogram for DMPC-only nanodiscs SEC_OmpF_nanodiscs_254nm - size exclusion chromatogram for OmpF-nanodiscs SANS raw data: Gramicidin: SMA-d-32-GR - Gramicidin SMALPs with deuterated-DMPC (d-DMPC), 32% deuterated-PBS (32% d-PBS) buffer SMA-d-h-GR - Gramicidin SMALPs with d-DMPC, 100% hydrogenated-PBS (h-PBS) buffer SMA-h-d-GR - Gramicidin SMALPs with hydrogenated-DMPC (h-DMPC), 100% d-PBS buffer OmpF (samples from Peak 3 from SEC column): SMA-dbact-32-OM-P3 - OmpF SMALPs with partially deuterated lipid core (d-bact), 32% d-PBS SMA-dbact-d-OM-P3 - OmpF SMALPs with partially deuterated lipid core (d-bact), 100% d-PBS SMA-dbact-h-OM-P3 - OmpF SMALPs with partially deuterated lipid core (d-bact), 100% h-PBS SANS edited data for Ab initio modelling: B11_edit.out - Gramicidin edited SANS files for ab initio modelling using DAMMIF and DAMMIN (Deuterated DMPC lipid with 32% deuterated PBS) B100_edit.out - OmpF edited SANS file for ab initio modelling using MONSA - disconnected phases and connected phases (partically deuterated bacterial lipid with 32% deuterated PBS) B101_edit.out - OmpF edited SANS file for ab initio modelling using MONSA - disconnected phases and connected phases (partically deuterated bacterial lipid with 100% hydrogenated PBS) B102_edit.out - OmpF edited SANS file for ab initio modelling using MONSA - disconnected phases and connected phases (partically deuterated bacterial lipid with 100% deuterated PBS) Ab initio modelling: Gramicidin: B11_edit-1.pdb - DAMMIN final model B11_edit.log - DAMMIN log file for B11_edit-1.pdb OmpF: Final model for interconnected phases, with separate contrasts at the same orientation; B100inter_damfilt_phase1.pdb - phase 1 B100inter_damfilt_phase2r.pdb - phase 2 in same orientation as phase 1 Final model for disconnected phases with separate contrasts at the same orientation; B100dis_damfilt_phase1.pdb - phase 1 B100dis_damfilt_phase2r.pdb - phase 2 in same orientation as phase 1 Crystal trimer formation of OmpF (Protein data bank ID: 2OMF); ompF_2OMF.pdb