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Potentiation of RNA polymerase II transcription by Gal4-VP16 during but not after DNA replication and chromatin assembly.

Open access
Kamakaka, R T, Bulger, M, Kadonaga, J T·1993·Genes & Development

Abstract

Purified, reconstituted chromatin templates containing regular, physiological nucleosome spacing were transcribed in vitro by RNA polymerase II along with the Gal4-VP16 activator. When Gal4-VP16 was prebound to DNA before reconstitution of either H1-deficient or H1-containing chromatin, the resulting templates were transcribed with a similar efficiency. Under such conditions, we observed long-range (1000 bp) activation of transcription in vitro with H1-containing chromatin, but not naked DNA templates. When Gal4-VP16 was added to preassembled chromatin, the H1-deficient chromatin was transcriptionally active, whereas the H1-containing chromatin, which possessed properties similar to native chromatin, was transcriptionally inert. We then mimicked DNA replication and chromatin assembly at a replication fork and found that Gal4-VP16 could potentiate transcription during, but not after, replication and assembly of histone H1-containing chromatin. These experiments provide biochemical data that support a DNA replication-dependent mechanism for reconfiguration of chromatin structure and activation of transcription by Gal4-VP16.

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Metadata

Authors
Kamakaka, R. T., Bulger, M., & Kadonaga, J. T.
Venue
Genes & Development
Published
1993-09
Volume
7
Issue
9
Pages
1779-1795
ISSN
  • 0890-9369 (ISSN-L)
  • 1549-5477
OpenAlex
W1990958396
Cited by
188
References
0
Type
posted content
Language
en
Open access
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CoChat. (2026). Citation check: Potentiation of RNA polymerase II transcription by Gal4-VP16 during but not after DNA replication and chromatin assembly. https://app.cochat.ai/papers/10.1101/gad.7.9.1779
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Kamakaka, R. T., Bulger, M., & Kadonaga, J. T. (1993). Potentiation of RNA polymerase II transcription by Gal4-VP16 during but not after DNA replication and chromatin assembly. Genes & Development. https://doi.org/10.1101/gad.7.9.1779

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