PMID: 698240Sep 28, 1978Paper

Animal carotenoids 15. Carotenoid distribution and carotenoprotein of Asterias rubens

Biochimica Et Biophysica Acta
A ElgsaeterS Liaaen-Jensen

Abstract

A clear differentiation in localization according to functional groups in the carotenoids of the starfish, Asterias rubens, is reported. Only the free alpha-ketols, 7,8,7',8'-tetradehydroastaxanthin, 7,8-didehydroastaxanthin and astaxanthin, are present in the purified carotenoprotein. A post mortem liberated slime contained beta,beta-carotene, free and esterified alloxanthin and esterified alpha-ketols. Evidence suggesting the existence of an alloxanthin protein complex was obtained. The carotenoprotein, asteriarubin, accounts for approx. 10% of the protein extracted by low salt dialysis from the purple-blue part of the top skin of A. rubens and exhibits an absorbance maximum at 554 nm in buffer solution. Asteriarubin is a glycoprotein with an equivalent Stoke's radius corresponding to that of globular proteins of molecular weight 8--10 10(4) and contains 20 microgram carotenoid per mg asteriarubin. Sodium dodecyl sulfate polyacrylamide gel electrophoresis of purified asteriarubin disclosed two major components, one of which is a glycopeptide.

References

Jan 1, 1968·Acta Chemica Scandinavica·N A SorensenG Francis
Jan 1, 1972·Acta Chemica Scandinavica·H Kjosen, S Liaaen-Jensen
Jan 1, 1973·Journal of Supramolecular Structure·T L Steck, J Yu
Jun 1, 1970·Comparative Biochemistry and Physiology·P F ZagalskyR Daumas
Jan 1, 1970·Acta Chemica Scandinavica·G W FrancisS Liaaen-Jensen
Feb 1, 1968·Biochemistry·M Buchwald, W P Jencks
Oct 3, 1969·Science·I M Klotz, D W Darnall

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Citations

Feb 11, 2004·Organic & Biomolecular Chemistry·Geir Kildahl-AndersenSynnøve Liaaen-Jensen
May 6, 2009·Molecular Biology and Evolution·Nicholas M WadeBernard M Degnan

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