Green Fluorescent Protein (GFP) emits green light due to the presence of a:

Select an option to attempt

1. A
   prosthetic fluorophore that emits green light.
2. B
   group of amino acids that are not found in other proteins.
3. C
   metal cofactor that shifts the emission to green wavelength.
4. D
   post translational modification that generates a unique fluorophore.