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2006•Angewandte Chemie International EditionRequires access

Cationic State of Accessory Chlorophyll and Electron Transfer through Pheophytin to Plastoquinone in Photosystem II

Hiroshi Ishikita, Jacek Biesiadka, Bernhard Loll, Wolfram Saenger, Ernst‐Walter Knapp

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Abstract

It must be charged: The redox potential difference between pheophytin (PheoD1) and primary plastoquinone in the electron transfer in photosystem II from accessory chlorophyll on the D1 branch (ChlD1) is consistent with the free-energy difference estimated from kinetic studies only when computed for the cationic state . YD=symmetry related redox-inactive tyrosine, YZ=redox-active tyrosine.

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What this paper is about

It must be charged: The redox potential difference between pheophytin (PheoD1) and primary plastoquinone in the electron transfer in photosystem II from accessory chlorophyll on the D1 branch (ChlD1) is consistent with the free-energy difference estimated from kinetic studies only when computed for the cationic state . YD=symmetry related redox-inactive tyrosine, YZ=redox-active tyrosine.

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Available abstract

It must be charged: The redox potential difference between pheophytin (PheoD1) and primary plastoquinone in the electron transfer in photosystem II from accessory chlorophyll on the D1 branch (ChlD1) is consistent with the free-energy difference estimated from kinetic studies only when computed for the cationic state . YD=symmetry related redox-inactive tyrosine, YZ=redox-active tyrosine.

Key concepts: Plastoquinone, Pheophytin, Photosystem II, P680, Redox, Electron transfer, Chemistry, Photochemistry

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