This conference is dedicated to the mass spectrometry of membrane proteins using a broad range of approaches. This includes applications to structure, biophysics, expression levels, cellular localization, interactions, and function. In addition, we also propose some talks covering complementary analytical techniques, such as X-ray crystallography, NMR, and cryoEM. We envisage this meeting will be topical for the pharmaceutical industry, since many of the current industrial therapeutic targets are membrane proteins.