Question

What is the function of Plastocyanin?

Answer 1

Plastocyanins:

1. These are important copper-containing proteins involved in electron transfer.
2. This protein is a monomer, has a molecular weight of about 10,500 Da, and is 99 amino acids in most vascular plants.
3. It is a member of the copper-binding proteins plastocyanin family.
4. During photosynthesis, plastocyanins act as an electron transport chain between cytochrome f in the cytochrome b6f complex of Photosystem II and P700 + in Photosystem I.
5. With cytochrome b6f complex both P700 + are membrane-bound proteins with exposed residues on the luminal side of the chloroplast thylakoid membrane.
6. Cytochrome f acts as an electron donor and P700 + receives electrons from reduced plastocyanins.