Lesson plan
Transducin
(rainbow colored) embedded in a lipid bilayer (heads red and tails blue) with Transducin below it. G t α is colored red, G t β blue, and G t γ yellow. There is a bound GDP molecule in the G t α-subunit and a bound retinal (black) in the rhodopsin. The N-terminus of rhodopsin is red and the C-terminus blue. Anchoring of transducin to the membrane has been drawn in black. Transducin (G t ) is a protein complex naturally expressed in vertebrate retina rods and cones and it is very important in vertebrate phototransduction. It is a type of heterotrimeric G-protein with different α subunits in rod and cone photoreceptors. Light leads to conformational changes in the G protein–coupled receptor rhodopsin, which in turn leads to the activation of transducin. Transducin activates phosphodiesterase, which results in the breakdown of cyclic guanosine monophosphate (cGMP). The intensity of the flash response is directly proportional to the number of transducin activated.
Article summary
(rainbow colored) embedded in a lipid bilayer (heads red and tails blue) with Transducin below it. G t α is colored red, G t β blue, and G t γ yellow. There is a bound GDP molecule in the G t α-subunit and a bound retinal (black) in the rhodopsin. The N-terminus of rhodopsin is red and the C-terminus blue. Anchoring of transducin to the membrane has been drawn in black. Transducin (G t ) is a protein complex naturally expressed in vertebrate retina rods and cones and it is very important in vertebrate phototransduction. It is a type of heterotrimeric G-protein with different α subunits in rod and cone photoreceptors. Light leads to conformational changes in the G protein–coupled receptor rhodopsin, which in turn leads to the activation of transducin. Transducin activates phosphodiesterase, which results in the breakdown of cyclic guanosine monophosphate (cGMP). The intensity of the flash response is directly proportional to the number of transducin activated.
Key claims
No claims recorded.
Discussion questions
- Summarise the article in your own words. Which single claim would you verify first, and why?
- Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
- If two sources disagreed about one of these facts, what would you need in order to trust one over the other?
Bibliography
No sources recorded.
Key claims and bibliography are generated from the same tracked claims and sources as the article page.