Local electrostatic field induced by the carotenoid bound to the reaction center of the purple photosynthetic bacterium Rhodobacter sphaeroidesLocal electrostatic field induced by the carotenoid bound to the reaction center of the purple photosynthetic bacterium Rhodobacter sphaeroides

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From: Journal of Physical Chemistry B(Vol. 109, Issue 2)
Publisher: American Chemical Society
Document Type: Article
Length: 72 words

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Abstract :

The effect of carotenoid (Car) on the electrostatic environment of the RCs of the purple bacterium Rhodobacter (Rb.) sphaeroides was investigated, by recording electroabsorption (EA) spectra in the region of the reaction center (RC) Q(sub y) absorption bands of bacteriochlorophyll (Bchl) and bacteriopheophytin. Although there were no differences observed between the absorption and EA spectra of R26.1-RC and R26.1-RC+Car at 79K, significant differences were detected between their EA spectra at 293 K.

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Gale Document Number: GALE|A132903949