1. Plural of plastocyanin; small copper-containing proteins found in plant chloroplasts that function as electron carriers in photosynthesis.
Usage: technical; biology; used in scientific and educational contexts

Examples

• Plastocyanins play a crucial role in transferring electrons during the light-dependent reactions of photosynthesis.
• The structure of plastocyanins has been extensively studied using X-ray crystallography.
• Researchers isolated plastocyanins from spinach leaves to analyze their electron-transfer properties.
• Plastocyanins contain a copper atom at their active site, which is essential for their function.
• The evolution of plastocyanins across different plant species reveals their fundamental importance in photosynthesis.