Micromatabilin, the green pigment 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 realm, Palearctic distribution. It occurs naturally in Northern and Ce ...

'', is characterized as a mixture of

biliverdin Biliverdin (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. It is the ...

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