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Explore the fundamental principles and mechanisms of cellular communication in this comprehensive lecture series covering 18 hours and 54 minutes of content. Begin with basic concepts of signaling necessity and types, then progress through signal nature, composition, and consequences. Master various receptor types including receptor tyrosine kinases (RTKs), G-protein coupled receptors (GPCRs), and receptor serine/threonine kinases, understanding their activation mechanisms and downstream signaling pathways. Delve into specialized signaling systems including two-component systems in bacteria and plants, JAK-STAT pathways, and phosphoinositide-dependent signaling. Examine contact-mediated signaling through Notch-Delta, Eph-Ephrin, and integrin pathways that regulate cell motility, tissue organization, and development. Learn about plant-specific signaling mechanisms including receptor-like kinases (RLKs), cytokinin signaling, ethylene responses, and photomorphogenic pathways. Investigate nuclear and cytosolic receptors, water channels, and transcription factor activity in cellular responses. Study kinase regulation, phosphorylation-dependent mechanisms, and G-protein functions in signal transduction. Understand how signaling coordinates complex biological processes from microbial lifestyle changes and quorum sensing to animal development and tissue morphogenesis, concluding with regulatory mechanisms at the receptor level and nuclear receptor signaling.
