1. Proteins that contain a colored, non-protein component (chromophore) bound to the protein structure, giving them characteristic colors and enabling light absorption or electron transfer.
Usage: plural form; used in biochemistry and molecular biology; the singular form is chromoprotein

Examples

• Hemoglobin and myoglobin are chromoproteins that contain heme groups responsible for their red color.
• Chlorophyll-binding proteins are chromoproteins essential for photosynthesis in plants.
• The study of chromoproteins helps scientists understand how organisms capture and use light energy.
• Cytochrome c is a chromoprotein involved in cellular respiration and electron transport.
• Many chromoproteins exhibit distinctive absorption spectra due to their bound prosthetic groups.
• Researchers isolated several novel chromoproteins from deep-sea organisms.
• The color of chromoproteins often indicates their biological function and activity state.