Urobiliverdin, a New Bile Pigment Deriving from Uroporphyrin
نویسندگان
چکیده
5-Aminolevulinic acid is incubated with a crude enzyme extract from Rhodopseudomonas spheroides, mutant R 26. The formed porphyrins (main product: uroporphyrin III) are isolated. Incorporation o f iron, ring-splitting by coupled oxydation and subsequent iron removal leads to a mixture o f pigments, from which urobiliverdin, a new bile pigment with eight carboxylic acid side chains, is isolated. It is characterized by its chromatographic behaviour, chromic acid degra dation and UV-vis spectroscopy.
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