viestijämolekyylejä
Viestijämolekyylit, also known as signaling molecules or messenger molecules, are chemical substances used by cells to communicate with each other. These molecules play a crucial role in coordinating cellular activities, enabling multicellular organisms to function as integrated units. They can be proteins, peptides, amino acids, steroids, or even gases. The process typically involves a signaling molecule being released by a sender cell and then binding to specific receptors on a target cell. This binding event triggers a cascade of events within the target cell, ultimately leading to a specific response.
There are various types of signaling molecules, categorized by their mode of action. Endocrine signals travel