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ECB-ART-32381
Biochim Biophys Acta 1987 Jun 17;9132:111-6. doi: 10.1016/0167-4838(87)90318-9.
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Resonance Raman study of reconstituted carotenoproteins incorporating astaxanthin and 15,15''-didehydroastaxanthin.

Merlin JC , Thomas EW , Shone CC , Britton G .


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Two reconstituted carotenoproteins have been studied by resonance Raman spectroscopy. They were prepared from the apoprotein of the Asterias rubens carotenoprotein, asteriarubin and either astaxanthin or 15,15''-didehydroastaxanthin. Spectral properties of dehydrocarotenoids are first discussed. The spectral properties of the complexes are compared to those of the free carotenoids and of other carotenoproteins containing astaxanthin, and possible protein-carotenoid interactions are discussed. Greater delocalisation of the pi-electron system in the central part of the polyene chain, and the role of lateral methyl groups in binding is emphasised.

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