Biliverdin

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Template:Chembox E number
Biliverdin
Identifiers
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MeSH Biliverdin
Properties
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

Biliverdin is a green pigment formed as a byproduct of heme 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 converted to bilirubin (C33H36N4O6) by biliverdin reductase in macrophages of the reticuloendothelial system. 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 color to the bile juice.

The green-blooded skinks of the genus Prasinohaema possess such high (and would otherwise be toxic) levels of biliverdin in their blood that their tissues are colored a bright green.

External links

Tetrapyrroles


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de:Biliverdin lt:Biliverdinas


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