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Screening for H/ACA snoRNAs in Caenorhabditis elegans by GFP-FLAG-DKC-1 eCLIP.

ABSTRACT: To identify H/ACA snoRNAs, we generated a C. elegans strain overexpressing GFP-FLAG-DKC-1 and biochemically screened for GFP-FLAG-DKC-1-binding RNAs by enhanced crosslinking and immunoprecipitation (eCLIP) assay.

ORGANISM(S): Caenorhabditis elegans

PROVIDER: GSE274726 | GEO | 2025/10/24

REPOSITORIES: GEO

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Project description:ncRNA expression, including snoRNAs, across 11 tissues using polyA-neutral amplification Non-coding RNAs (ncRNAs) are an essential class of molecular species that have been difficult to monitor on high throughput platforms due to frequent lack of polyadenylation. Using a polyadenylation-neutral amplification protocol and next-generation sequencing, we explore ncRNA expression in eleven human tissues. ncRNAs 7SL, U2, 7SK, and HBII-52 are expressed at levels far exceeding mRNAs. C/D and H/ACA box snoRNAs are associated with rRNA methylation and pseudouridylation, respectively: spleen expresses both, hypothalamus expresses mainly C/D box snoRNAs, and testes show enriched expression of both H/ACA box snoRNAs and RNA telomerase TERC. Within the snoRNA 14q cluster, 14q(I-6) is expressed at much higher levels than other cluster members. More reads align to mitochondrial than nuclear tRNAs. Many lincRNAs are actively transcribed, particularly those overlapping known ncRNAs. Within the Prader-Willi syndrome loci, the snoRNA HBII-85 (group I) cluster is highly expressed in hypothalamus, greater than in other tissues and greater than group II or III. Additionally, within the disease locus we find novel transcription across a 400,000 nt span in ovaries. This genome-wide polyA-neutral expression compendium demonstrates the richness of ncRNA expression, their high expression patterns, their function-specific expression patterns, and is publicly available. ArrayExpress Release Date: 2010-07-05 Publication Title: ncRNA expression, including snoRNAs, across 11 tissues using polyA-neutral amplification Publication Author List: Matthew Biery,Heather Bouzek,Ronghua Chen,Stuart Jackson,Jason M. Johnson,Carol A. Rohl,Chris K. Raymond,David Haynor,Christopher D. Armour,John C. Castle Person Roles: submitter Person Last Name: Loewer Person First Name: Martin Person Mid Initials: Person Email: martin.loewer@tron-mainz.de Person Phone: +49 6131-720298-11 Person Address: TRON Translationale Onkologie gGmbH, Langenbeckstr. 8, D-55131 Mainz Person Affiliation: TRON

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Screening for H/ACA snoRNAs in Caenorhabditis elegans by GFP-FLAG-DKC-1 eCLIP.

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