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Updated: Aug 11, 2026

In Vitro Reconstitution of Light-harvesting Complexes of Plants and Green Algae
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Published on: October 10, 2014

Identification of the photosystem I antenna polypeptides in barley. Isolation of three pigment-binding antenna

J Knoetzel1, I Svendsen, D J Simpson

  • 1Carlsberg Laboratory, Department of Physiology, Copenhagen Valby, Denmark.

European Journal of Biochemistry
|May 15, 1992
PubMed

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Although structurally similar to photosystem II (PSII), photosystem I (PSI) is has a different electron supplier and electron acceptor.
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The Photochemical Reaction Center

Reaction centers are pigment-protein complexes that initiate energy conversion from photons to chemical entities. Therefore, photochemical reaction center is a more appropriate term that describes these complexes. The Nobel laureates Robert Emerson and William Arnold provided the first experimental evidence of photochemical reaction centers by demonstrating the participation of nearly 2,500 chlorophyll molecules for the release of just one molecule of oxygen. Despite thousands of photosynthetic...
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