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Zur Uroporphyrinogen-Bildung. Studien mit dem 1 - Aminomethyl-3,8,13,18-tetra( 2-carboxyäthyl)-2,7,12,17-tetracarboxymethylbilinogen by Hans-O. DAUNER; Gerhard GUNZER; Ingrid HEGER; Gerhard MÜLLER is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

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The preparation of the aminomethyl-bilinogen which results from formal "head to tail" condensation of porphobilinogen is described. The chemical cyclocondensation of this compound at pH 7.4 yields uroporphyrinogen I. Enzymatic studies with enzyme preparations from Propionibacterium shermanii, which synthesize uroporphyrinogens from porphobilinogen, show that the rate of cyclisation is increased by these enzymes and indicate that the bilinogen also might be used for uroporphyrinogen III formation. This is also suggested by studies on the formation of cobyrinic acid from [4-14C]5-aminolevulinate via uroporphyrinogen III in the presence of the aminomethylbilinogen by cell-free extracts from Clostridium tetanomorphum.

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Author

Hans-O. DAUNER; Gerhard GUNZER; Ingrid HEGER; Gerhard MÜLLER

Publisher

Walter de Gruyter GmbH

Published

1976

Language

DE

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)