Mass Photometry of Membrane Proteins by Olerinyova, A, Sonn-Segev, A, Gault, J, Eichmann, C, Schimpf, J, Kopf, A H, Rudden, L S P, Ashkinadze, D, Bomba, R, Frey, L, Greenwald, J, Degiacomi, M T, Steinhilper, R, Killian, J A, Friedrich, T, Riek, R, Struwe, W B, Kukura, P