Introduction to cell signaling -- Principles and mechanisms of protein interactions -- Signaling enzymes and their allosteric regulation -- Role of post-translational modifications in signaling -- Subcellular localization of signaling molecules -- Second messengers: small signaling mediators -- Membranes, lipids, and enzymes that modify them -- Information transfer across the membrane -- Regulated protein degradation -- Modular architecture and evolution of signaling proteins -- Information processing by signaling devices and networks -- How cells make decisions -- Methods for studying signaling proteins and networks