Micromatabilin, a new biliverdin conjugate in the spider, Micromata rosea (Sparassidae)

Abstract

Micromatabilin, the green pigment of Micromata rosea, is characterized as a mixture of biliverdin 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. © 1975 Springer-Verlag.