A Structure-Function Toolbox for Membrane Transporter and Channels, Volume 594, a new release in the Methods in Enzymology series, continues the legacy of this premier serial with quality chapters authored by leaders in the field. New chapters in the updated serial include Cryo-EM on membrane proteins embedded in nanodics, Solid-Supported membrane-based electrophysiology on membrane transporters and channels, Saposin-lipoprotein scaffolds for structure determination of membrane transporters and channels, Single-molecule FRET on transporters, Dynamics of channels and transporters investigated by NMR, Structure-function studies on channels and transporters, and a section on MemStar, a new GFP-based expression and purification system for transporters and channels.