Phycoerythrobilin

Phycoerythrobilin

Identifiers
CAS Registry Number	18097-67-1 Y
MeSH	phycoerythrobilin
PubChem	6443764
Properties
Chemical formula	C33H38N4O6
Molar mass	586.678 g/mol
Except where noted otherwise, data is given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
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Infobox references

Phycoerythrobilin is a red phycobilin, i.e. an open tetrapyrrole 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.

References

• Chapman, David J.; Cole, W. J.; Siegelman, Harold W. (1967). "Structure of phycoerythrobilin". Journal of the American Chemical Society 89 (23): 5976–5977. doi:10.1021/ja00999a058. ISSN 0002-7863. 

External links

• Chemical Structure of phycoerythrobilin