Biology / Unit 4 Bio 0797 short lesson, about 20 seconds
Signal Amplification
Captions available
The idea
Signal amplification lets one bound ligand and one activated receptor-linked enzyme activate many copies of the next protein in a cascade, multiplying the original signal.
In practice
A single activated enzyme in a cascade can modify hundreds of downstream target molecules before the signal terminates.
Where people slip
Amplification happens at enzyme-catalyzed steps in the cascade — the initial ligand-receptor binding itself is one-to-one.
Your place on the trail
Every lesson rests on earlier ones and opens later ones. Tap any to jump.
Unlocks
Something wrong in this lesson? Flag it · Sources for Biology