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Ecdysteroids regulate the synthesis of RNA polymerase molecules in fat body cells ofCalliphora larvae (1983)

Schenkel, Heide ; Scheller, Klaus

Springer

Development genes and evolution 192 (1983), S. 152-158

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ISSN: 1432-041X

Keywords: Calliphora ; Fat body ; RNA polymerase ; Ecdysteroids

Source: Springer Online Journal Archives 1860-2000

Topics: Biology

Notes: Summary In vivo labelling of RNA polymerases I and II with S35-methionine shows that ecdysterone causes a de novo synthesis of both enzymes in nuclei of fat body cells inCalliphora 3rd instar larvae. Binding experiments with H3-α-amanitin demonstrate that the concentration of RNA polymerase II molecules increases two- to threefold within 3 h after ecdysterone treatment. The enhanced polymerase concentration coincides with an enhanced enzymatic activity and an increase in RNA synthesis in response to ecdysteroids.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF00848684

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