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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Allen, Mary Ann Hillier, LaDeana W. Waterston, Robert H. Blumenthal, Thomas |
| Description | Country affiliation: United States Author Affiliation: Allen MA ( Department of Molecular, Cellular, and Developmental Biology, University of Colorado at Boulder, Colorado 80309, USA.) |
| Abstract | Trans-splicing of one of two short leader RNAs, SL1 or SL2, occurs at the 5' ends of pre-mRNAs of many C. elegans genes. We have exploited RNA-sequencing data from the modENCODE project to analyze the transcriptome of C. elegans for patterns of trans-splicing. Transcripts of â¼70% of genes are trans-spliced, similar to earlier estimates based on analysis of far fewer genes. The mRNAs of most trans-spliced genes are spliced to either SL1 or SL2, but most genes are not trans-spliced to both, indicating that SL1 and SL2 trans-splicing use different underlying mechanisms. SL2 trans-splicing occurs in order to separate the products of genes in operons genome wide. Shorter intercistronic distance is associated with greater use of SL2. Finally, increased use of SL1 trans-splicing to downstream operon genes can indicate the presence of an extra promoter in the intercistronic region, creating what has been termed a 'hybrid' operon. Within hybrid operons the presence of the two promoters results in the use of the two SL classes: Transcription that originates at the promoter upstream of another gene creates a polycistronic pre-mRNA that receives SL2, whereas transcription that originates at the internal promoter creates transcripts that receive SL1. Overall, our data demonstrate that >17% of all C. elegans genes are in operons. |
| File Format | HTM / HTML |
| ISSN | 10889051 |
| e-ISSN | 15495469 |
| DOI | 10.1101/gr.113811.110 |
| Journal | Genome Research |
| Issue Number | 2 |
| Volume Number | 21 |
| Language | English |
| Publisher | Cold Spring Harbor Laboratory Press |
| Publisher Date | 2011-02-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Discipline Genetics Discipline Genomics Caenorhabditis Elegans Genetics Trans-splicing Animals Dna, Intergenic Gene Deletion Molecular Sequence Annotation Operon Promoter Regions, Genetic Rna Precursors Metabolism Rna Splice Sites Rna, Messenger Rna, Spliced Leader Research Support, N.i.h., Extramural |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Genetics (clinical) |
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