transducin

Transducin is a protein found in the cells of the retina responsible for vision in low light. When light hits the eye, it triggers a chemical change in a visual pigment called rhodopsin. This change activates transducin, which then signals a series of events leading to the electrical signals sent to the brain. Essentially, transducin acts as a messenger inside eye cells, translating the presence of light into a form that the brain can interpret as vision. It plays a key role in our ability to see in dim lighting conditions.