Action of the brain hormone on the synthesis of ’stable’ oocyte RNA in Nereidae (Annelida Polychaeta)

Publication Type:Journal Article
Year of Publication:1981
Authors:F. Caner, Bertout, M., Krembel, J., Dhainaut, A.
Journal:Comparative. Biochemistry. and. Physiology. B. Comparative. Biochemistry.

In Nereidae the experimental suppression of the brain hormone activity (brain removal) sets up a diminution of stable RNA (18-28 S rRNA, 4-5 S RNA) syntheses, during oogenesis. Quantitative analysis of RNA, carried out on oocytes maintained during 12 days after brain removal, shows a diminution in RNA with regard to the controls. Sedimentation profiles of RNA synthetized after brain removal suggest that an alteration occurs in the processing of 45 S rRNA. In Nereidae, the brain hormone controls the storage of stable oocyte RNA through an action, not at the transcription level, but on the processing of this RNA.

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