Article
Biological functions of carotenoids--diversity and evolution.
BioFactors (Oxford, England) - 1 Jan 1999
Vershinin A
Abstract excerpt
Carotenoids first emerged in archaebacteria as lipids reinforcing cell membranes. To serve this function their long molecules have extremely rigid backbone due to the linear chain of usually 10 to 11 conjugated C=C bonds in transconfiguration--the length corresponding the thickness of hydrophobic...
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