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Phycoerythrobilin is a red phycobilin, i.e. an open tetrapyrolle chromophore found in cyanobacteria and in the chloroplasts of red algae, glaucophytes and some cryptomonads. Phycoerythrobilin is present in the phycobiliprotein phycoerythrin, of which it is the terminal acceptor of energy. The amount of phycoerythrobilin in phycoerythrins varies a lot, depending on the considered organism. In some Rhodophytes and oceanic cyanobacteria, phycoerythrobilin is also present in the phycocyanin, then termed R-Phycocyanin. Like all phycobilins, phycoerythrobilin is covalently linked to these phycobiliproteins by a thioether bond.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Phycoerythrobilin". A list of authors is available in Wikipedia.|