Photosystem II (IMAGE)

DOE/Lawrence Berkeley National Laboratory

Photosystem II

Caption

Photosytem II utilizes a water-splitting manganese-calcium enzyme that when energized by sunlight catalyzes a four photon-step cycle of oxidation states (S0-to-S3). When S3 absorbs a photon, molecular oxygen (O2) is released and So is generated. S4 is a transient state on the way to So.

Credit

SLAC Linear Accelerator Center

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