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Microbial diversity of semi-arid soil in the Colombian Caribbean

ABSTRACT: Microbial diversity of semi-arid soil in the Colombian Caribbean Raw sequence reads

PROVIDER: PRJNA817243 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR19681044.fastq.gz	Fastqsanger.gz
	SRR19681045.fastq.gz	Fastqsanger.gz
	SRR19681046.fastq.gz	Fastqsanger.gz
	SRR19681047.fastq.gz	Fastqsanger.gz
	SRR19681048.fastq.gz	Fastqsanger.gz

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Project description:Every known SWI/SNF chromatin-remodeling complex incorporates an ARID DNA binding domain-containing subunit. Despite being a ubiquitous component of these complexes, physiological roles for this domain remain undefined. We screened an N-ethyl-N-nitrosurea (ENU) mutagenized library for ARID domain point mutations and generated an Arid1a/Baf250a hypomorphic allele. The mutant ARID1a (V1068G) protein is stably expressed at wild-type levels, and it is capable of assembling into a SWI/SNF complex with in vitro mononucleosome disruption activity. However, its capacity to bind DNA is lost. Consistent with defective DNA binding, mutant protein occupancy at known SWI/SNF target genes is decreased. Loss of DNA binding is associated with concurrent changes in SWI/SNF target gene expression. Mutant embryos manifest heart defects, fail to establish proper yolk sac vasculature, and exhibit hemorrhaging. As a result of these phenotypes, mutant embryos fail to establish proper circulation, culminating in ischemic arrest in utero between days 9.5 and 11.5. These data support a role for ARID1a-containing, BAF-A complexes in heart and extraembryonic vascular development, and indicate the ARID domain of ARID1a is essential in this regard. Hence, intrinsic ARID subunit-DNA interactions are required for normal SWI/SNF function in vivo. Four-condition experiment, wild-type vs Baf250a/Arid1a^V1068G/V1068G yolk sacs isolated at E8.5 and E9.5. Biological replicates: 3 per condition.

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ARID-DNA interactions are required for promoter occupancy by SWI/SNF

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