Membrane Protein Assembly in vivo. Construction of Helix-Bundle Membrane Proteins. Transmembrane ƒÒ-barrel Proteins. Length, Time and Energy Scales of Photosystems. Structural Clues to the Mechanisms of Ion Pumping in Bacteriorhodopsin. A Crystal Structure of Wolinella succinogenes Quinol: Fumarate Reductase and Its Relevance to the Superfamily of Succinate: Quinone Oxidoreductases. Structure and Function of Quinone Binding Membrane Proteins. Prokaryotic Mechanosensitive Channels. The Voltage Sensor and the Gate in Ion Channels. Rhodopsin Structure, Dynamics and Activation: A Perspective from Crystallography, Site-Directed Labeling, Sulfhydryl Reactivity and Disulfide Cross-Linking.