✦ LIBER ✦

Properties of a pigment system consisting of carotenoids and reaction centre pigments in chromatophores of Rhodospirillum rubrum

✍ Scribed by J. C. Goedheer

Book ID: 104614718
Publisher: Springer
Year: 1984
Tongue: English
Weight: 527 KB
Volume: 5
Category: Article
ISSN: 0166-8595
DOI: 10.1007/bf00018376

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✦ Synopsis

A pigment system containing carotenoids and oxidised reaction centre pigments is present in chromatophores of Rhodospirillum rubrum and this pigment system may cause fluorescence quenching when a still unidentified chromatophore component is in its oxidised state. Besides by its action spectrum, this pigment system is characterised by the time course and levelof light saturation of the effect. The quenching of bacteriochlorophyll fluorescence is abolished when the permeability of the chromatophore membranes is affected. The quenching effect is correlated with a reversible absorption decrease of B 880. A possible function for this pigment system is discussed.

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