G-protein signaling pathways

G-protein signaling pathways are a way cells communicate and respond to their environment. When a signaling molecule (like a hormone) binds to a receptor on the cell surface, it activates a nearby G-protein. This G-protein then triggers a series of internal signals, such as activating enzymes or opening channels, which lead to specific cellular responses. These pathways are crucial for processes like growth, metabolism, and immune responses. Overall, G-protein signaling provides a flexible and rapid way for cells to sense and adapt to changes around them.