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Updated: May 3, 2026

Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues
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Purification of Active Photosystem I-Light Harvesting Complex I from Plant Tissues

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在光系统I中光化学能量转换的长波长极限

Eberhard Schlodder1, Friedhelm Lendzian, Jenny Meyer

  • 1Max-Volmer-Laboratorium für Biophysikalische Chemie, Technische Universität Berlin , Strasse des 17. Juni 135, 10623 Berlin, Germany.

Journal of the American Chemical Society
|February 13, 2014
PubMed
概括

光系统I (PS I) 可以吸收超过800nm的远红光来驱动光化学,即使在长波长叶绿素吸收之外. 这通过直接激发电荷转移状态来发生,从而扩展PS I.

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相关概念视频

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Photosystem II

The multi-protein complex photosystem II (PS II) harvests photons and transfers their energy through its bound pigments to its reaction center, and ultimately to photosystem I (PSI) through the electron transport chain. The pigments responsible for caputirng the light energy in photosystems include chlorophyll a, chlorophyll b, and carotenoids.
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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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Photosystems

Photosystems are multiprotein complexes that form the functional units of photosynthesis in plants, algae, and cyanobacteria. They are found embedded in the membrane of tiny sac-like structures called thylakoids placed inside the chloroplast.
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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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