Watching How Plants Make Oxygen (image)
Caption
This is the structure of the oxygen evolving complex in photosystem II in a light-activated state. Water molecules are shown as blue spheres, the four manganese ions in purple, the calcium ion in green and the bridging oxygen ions in red. The blue mesh is the experimental electron density, and the blue sticks are the protein side chains holding the catalytic complex.
Credit
Johannes Messinger
Usage Restrictions
May only be published in connection to reports about the research by Messinger et al.