Phycoerythrobilin

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Phycoerythrobilin
Identifiers
CAS number [18097-67-1]
PubChem 6443764
MeSH phycoerythrobilin
Properties
Molecular formula C33H38N4O6
Molar mass 586.678 g/mol
Except where noted otherwise, data are given for
materials in their standard state
(at 25 °C, 100 kPa)
Infobox disclaimer and references

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.

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Types of tetrapyrroles
Bilanes:
Chlorophylls:
Protochlorophyllide | Chlorophyllide
Corrinoids:
Phycobilins:
Phycoerythrobilin | Phycocyanobilin | Phycourobilin | Phycoviolobilin
Porphyrins:
Major families of biochemicals
Peptides | Amino acids | Nucleic acids | Carbohydrates | Nucleotide sugars | Lipids | Terpenes | Carotenoids | Tetrapyrroles | Enzyme cofactors | Steroids | Flavonoids | Alkaloids | Polyketides | Glycosides