Micromatabilin, the

green pigment Green pigments are the materials used to create the green colors seen in painting and the other arts. At one time, such pigments came from minerals, particularly those containing compounds of copper. Green pigments reflect the green portions of th ...

of the spider species ''

Micrommata virescens ''Micrommata virescens'', common name green huntsman spider, is a species of huntsman spiders belonging to the family Sparassidae. Distribution This species has a Palearctic distribution. It occurs naturally in Northern and Central Europe, inc ...

'', is characterized as a mixture of

biliverdin Biliverdin (from the Latin for green bile) is a green tetrapyrrolic bile pigment, and is a product of heme catabolism.Boron W, Boulpaep E. Medical Physiology: a cellular and molecular approach, 2005. 984–986. Elsevier Saunders, United States. ...

conjugates. The two isolated fractions have identical absorption bands (free base: 620–630 μm, hydrochloride: 690 μm, zinc complex: 685–690 μm). Chromic acid degradation yields imides I, II, IIIa, and IIIb. Differences in the non-hydrolytic degradation and in polarity lead to the conclusion that fraction 1 is a monoconjugate and fraction 2a diconjugate of biliverdin.

References

Biological pigments Tetrapyrroles {{biochem-stub