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Biliverdin
From Wikipedia, the free encyclopedia
| Biliverdin | |
|---|---|
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| Identifiers | |
| CAS number | [] |
| PubChem | |
| MeSH | |
| Properties | |
| Molecular formula | C33H34N4O6 |
| Molar mass | 582.646 |
| Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) Infobox disclaimer and references |
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Biliverdin is a green pigment formed as a byproduct of hemoglobin breakdown. It consists of four linearly connected pyrrole rings (a tetrapyrrole). Biliverdin is formed when the heme group in hemoglobin is cleaved at its α-methine bridge. The resulting water-soluble biliverdin (C33H34N4O6) is then reduced to the water-insoluble toxic bilirubin (C33H36N4O6) , a yellow pigment, by the enzyme biliverdin reductase. The changing color of a bruise from deep purple to yellow over time is a graphical indicator of this reaction.
Biliverdin is also present in the bile juice which is secreted by the liver and also imparts colour to the bile juice.
| Major Families of Biochemicals | ||
| Peptides | Amino acids | Nucleic acids | Carbohydrates | Lipids | Terpenes | Carotenoids | Tetrapyrroles | Enzyme cofactors | Steroids | Flavonoids | Alkaloids | Polyketides | Glycosides | ||
| Analogues of nucleic acids: | Types of Tetrapyrroles | Analogues of nucleic acids: |
| Bilanes: | Bilirubin | Biliverdin | Urobilinogen | Urobilin | |
|---|---|---|
| Chlorophylls: | Protochlorophyllide | Chlorophyllide | |
| Corrinoids: | Cyanocobalamin | |
| Phycobilins: | Phycoerythrobilin | Phycocyanobilin | Phycourobilin | Phycoviolobilin | |
| Porphyrins: | Coproporphyrinogen | Protoporphyrin | Uroporphyrinogen | |
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