noun
- A small copper-containing protein found in plant chloroplasts that functions as an electron carrier in the light-dependent reactions of photosynthesis.
Usage: technical; biology; biochemistry
Examples
- Plastocyanin transfers electrons between photosystem II and photosystem I during photosynthesis.
- The copper atom in plastocyanin is essential for its role as an electron carrier.
- Scientists study plastocyanin to better understand the mechanisms of photosynthetic energy conversion.
- Plastocyanin is one of the key proteins involved in the thylakoid membrane electron transport chain.