Photosynthetic reaction center ET

The X has since been identified as an accessory BChl, situated more or less between the (BChl)2 and the BPh, but off to one side. The determination of the crystal structure of the photosynthetic reaction center 

Comment In this system, it was again experiments that stimulated theoretical treatments of the reaction center and, they in turn, stimulated further experiments. It is also an example where the simple ET theory found application in biological systems. 

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