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Chromatin organization in NPP-13 knockdown C. elegans embryos

ABSTRACT: Chromatin organization in NPP-13 knockdown C. elegans embryos

PROVIDER: PRJNA217722 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR959925.fastq.gz	Fastqsanger.gz
	SRR959926.fastq.gz	Fastqsanger.gz
	SRR959927.fastq.gz	Fastqsanger.gz
	SRR959928.fastq.gz	Fastqsanger.gz
	SRR959929.fastq.gz	Fastqsanger.gz

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Chromatin organization in NPP-13 knockdown C. elegans embryos [seq]

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Chromatin organization in NPP-13 knockdown C. elegans embryos [array]

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Chromatin organization in NPP-13 knockdown C. elegans embryos [seq]

Project description:C. elegans nuclear pore protein NPP-13 associates with small RNA genes transcribed by RNA Polymerase III. To test if the nuclear pore-chromatin interactions play a role in large-scale chromatin organization, we determined nuclear membrane-genome interactions and RNA Polymerase II localization in C. elegans embryos depleted for NPP-13. Genome-wide ChIP-seq and ChIP-chip for nuclear membrane protein LEM-2, RNA Polymerase II (AMA-1) and H3K4me3 were performed in mixed-stage C. elegans embryos depleted for NPP-13. As a control, ChIP was also performed in wild-type embryos treated with empty vector.

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Chromatin organization in NPP-13 knockdown C. elegans embryos [array]

2016-08-15 | E-GEOD-49902 | biostudies-arrayexpress

Caenorhabditis elegans

Project description:Chromatin organization in NPP-13 knockdown C. elegans embryos [array]

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Caenorhabditis elegans

Project description:Chromatin organization in NPP-13 knockdown C. elegans embryos [seq]

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Integral nuclear pore proteins bind to Pol III genes and are required for Pol III transcript processing in C. elegans [array]

Project description:Nuclear pores associate with active protein-coding genes in yeast and have been implicated in transcriptional regulation. Here, we show that in addition to transcriptional regulation, key components of C. elegans nuclear pores are required for processing of a subset of small nucleolar RNAs (snoRNAs) and tRNAs transcribed by RNA Polymerase (Pol) III. Chromatin immunoprecipitation of NPP-13 and NPP-3, two integral nuclear pore components, and importin-M-CM-^_ IMB-1, provides strong evidence that this requirement is direct. All three proteins associate specifically with tRNA and snoRNA genes undergoing Pol III transcription. These pore components bind immediately downstream of the Pol III pre-initiation complex, but are not required for Pol III recruitment. Instead, NPP-13 is required for cleavage of tRNA and snoRNA precursors into mature RNAs, whereas Pol II transcript processing occurs normally. Our data suggest that integral nuclear pore proteins act to coordinate transcription and processing of Pol III transcripts in C. elegans. Genome-wide ChIP-seq and ChIP-chip were performed in mixed-stage C. elegans embryos for nuclear pore proteins NPP-13, NPP-3, IMB-1 and chromatin proteins Pol III (RPC-1), TBP-1, TFC-1 (SFC-1), TFC-4 (TAG-315), and Pol II (AMA-1). For RPC-1 and TBP-1 ChIP-seq, embryos depleted for NPP-13 were also used. Total RNAs from wild-type, NPP-13 RNAi, and IMB-1 RNAi embryos were analyzed by RNA-seq.

2013-09-05 | E-GEOD-42651 | biostudies-arrayexpress

Integral nuclear pore proteins bind to Pol III genes and are required for Pol III transcript processing in C. elegans [seq]

2013-09-05 | E-GEOD-42714 | biostudies-arrayexpress

Chromatin organization in NPP-13 knockdown C. elegans embryos

Project description:This SuperSeries is composed of the SubSeries listed below.

2016-08-15 | GSE50488 | GEO

Integral nuclear pore proteins bind to Pol III genes and are required for Pol III transcript processing in C. elegans [seq]

Project description:Nuclear pores associate with active protein-coding genes in yeast and have been implicated in transcriptional regulation. Here, we show that in addition to transcriptional regulation, key components of C. elegans nuclear pores are required for processing of a subset of small nucleolar RNAs (snoRNAs) and tRNAs transcribed by RNA Polymerase (Pol) III. Chromatin immunoprecipitation of NPP-13 and NPP-3, two integral nuclear pore components, and importin-ß IMB-1, provides strong evidence that this requirement is direct. All three proteins associate specifically with tRNA and snoRNA genes undergoing Pol III transcription. These pore components bind immediately downstream of the Pol III pre-initiation complex, but are not required for Pol III recruitment. Instead, NPP-13 is required for cleavage of tRNA and snoRNA precursors into mature RNAs, whereas Pol II transcript processing occurs normally. Our data suggest that integral nuclear pore proteins act to coordinate transcription and processing of Pol III transcripts in C. elegans.

2013-09-05 | GSE42714 | GEO

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