Botany - Photosynthesis in Higher Plants Question with Solution | TestHub

Plastocyanin is a copper-containing protein involved in electron-transfer. In photosynthesis, plastocyanin functions as an electron transfer agent between cytochrome f of the cytochrome b₆f complex from photosystem II and P₇₀₀from photosystem I. Cytochrome b₆f complex and P₇₀₀are both membrane-bound proteins with exposed residues on the lumen-side of the thylakoid membrane of chloroplasts. Cytochrome f acts as an electron donor while P₇₀₀accepts electrons from reduced plastocyanin.