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Role of Transcriptional Read-Through in PRE Activity in Drosophila melanogaster
Maintenance of the individual patterns of gene expression in different cell types is required for the differentiation and development of multicellular organisms. Expression of many genes is controlled by Polycomb (PcG) and Trithorax (TrxG) group proteins that act through association with chromatin....
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| Published in: | Actanaturae 2016-04, Vol.8 (2), p.79-86 |
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| Main Authors: | , , , , |
| Format: | Article |
| Language: | English |
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| container_end_page | 86 |
| container_issue | 2 |
| container_start_page | 79 |
| container_title | Actanaturae |
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| creator | Elizar'ev, P V Lomaev, D V Chetverina, D A Georgiev, P G Erokhin, M M |
| description | Maintenance of the individual patterns of gene expression in different cell types is required for the differentiation and development of multicellular organisms. Expression of many genes is controlled by Polycomb (PcG) and Trithorax (TrxG) group proteins that act through association with chromatin. PcG/TrxG are assembled on the DNA sequences termed PREs (Polycomb Response Elements), the activity of which can be modulated and switched from repression to activation. In this study, we analyzed the influence of transcriptional read-through on PRE activity switch mediated by the yeast activator GAL4. We show that a transcription terminator inserted between the promoter and PRE doesn't prevent switching of PRE activity from repression to activation. We demonstrate that, independently of PRE orientation, high levels of transcription fail to dislodge PcG/TrxG proteins from PRE in the absence of a terminator. Thus, transcription is not the main factor required for PRE activity switch. |
| doi_str_mv | 10.32607/20758251-2016-8-2-79-86 |
| format | article |
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| title | Role of Transcriptional Read-Through in PRE Activity in Drosophila melanogaster |
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