phycocyanobilin
Sign in to savePhycocyanobilin is a blue phycobilin, i.e., a tetrapyrrole chromophore found in cyanobacteria and in the chloroplasts of red algae, glaucophytes, and some cryptomonads. Phycocyanobilin is present only in the phycobiliproteins allophycocyanin and phycocyanin, of which it is the terminal acceptor of energy. It is covalently linked to these phycobiliproteins by a thioether bond.
Wikidata facts
- Subclass of
- heterocyclic compound
- Has part
- carbon
- Mass
- 586.279134936
Show 4 more facts
- Commons category
- Phycocyanobilin
- chemical formula
- C₃₃H₃₈N₄O₆
- canonical SMILES
- CC=C1/C(=C/C2=N/C(=C\c3[nH]c(/C=C4\NC(=O)C(CC)=C4C)c(C)c3CCC(=O)O)C(CCC(=O)O)=C2C)NC(=O)C1C
- isomeric SMILES
- CC=C1/C(=C/C2=N/C(=C\c3[nH]c(/C=C4\NC(=O)C(CC)=C4C)c(C)c3CCC(=O)O)C(CCC(=O)O)=C2C)NC(=O)C1C
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Encyclopedic overview
4 sectionsContents
- Biosynthetic Pathway
- Biological role
- Uses
- References
Phycocyanobilin is a blue phycobilin, i.e., a tetrapyrrole chromophore found in cyanobacteria and in the chloroplasts of red algae, glaucophytes, and some cryptomonads. Phycocyanobilin is present only in the phycobiliproteins allophycocyanin and phycocyanin, of which it is the terminal acceptor of energy. It is covalently linked to these phycobiliproteins by a thioether bond.
Phycocyanobilin (PCB), has the ability to bind to human serum albumin (HSA), protein found mainly in the blood of humans. This PCB-HCA complex benefits the structure of HSA, increasing the thermal stability of HSA, as well as increasing its ability to prevent against proteolytic activity of other proteins.
Excerpted from Wikipedia’s “phycocyanobilin” article, available under the CC BY-SA 4.0 licence.