G Proteins and G Protein-Coupled Receptors.- Traditional GPCR Pharmacology and Beyond.- Regulation of Intraneuronal Trafficking of G-Protein-Coupled Receptors by Neurotransmitters In Vivo.- Small GTPases and Their Role in Regulating G Protein-Coupled Receptor Signal Transduction.- Regulation of G Protein Receptor Coupling, Mood Disorders and Mechanism of Action of Antidepressants.- Dysregulation of G Protein-Coupled Receptor Signaling in Cancer.- Growth Factors.- Insulin Signaling in Normal and Diabetic Conditions.- Epidermal Growth Factor (EGF) Receptor Signaling and Cancer.- Leptin Signaling Pathway.- Signaling in Normal and Pathological Angiogenesis.- Signaling Platforms.- Spatial and Temporal Control of Cell Signaling by A-Kinase Anchoring Proteins.- Mitochondria, a Platform for Diverse Signaling Pathways.- Mitogen-Activated Protein Kinases and Their Scaffolding Proteins.- Molecular and Functional Determinants of Ca2+ Signaling Microdomains.- Nuclear Receptors / Transcription.- Eukaryotic Gene Transcription.- Estrogen Signaling Mechanisms.- Signal Transduction Pathways Involved in Glucocorticoid Actions.- Reactive Signaling Molecules.- Cellular Signaling by Reactive Oxygen Species: Biochemical Basis and Physiological Scope.- Soluble Guanylyl Cyclase: The Nitric Oxide Receptor.- Cell Cycle, Cell Death and Cancer.- Distinct Roles of the Pocket Proteins in the Control of Cell Cycle.- Activation of the p53 Tumor Suppressor and its Multiple Roles in Cell Cycle and Apoptosis.- Aging and Cancer: Caretakers and Gatekeepers.- Signal Transduction in Embryonic Stem Cells and the Rise of iPS Cells.- Erratum to.