AUTHOR=Díaz Mario , Nicolson Garth L. TITLE=Editorial: Hidden Secrets and Lessons From the Crystal Structures of Integral Membrane Proteins: Channels, Pumps and Receptors JOURNAL=Frontiers in Physiology VOLUME=9 YEAR=2018 URL=https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2018.01466 DOI=10.3389/fphys.2018.01466 ISSN=1664-042X