Unknown,Transcriptomics,Genomics,Proteomics

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GENCODE Batch VIII b: determining lncRNA transcript 5' and 3'-ends by RACE-PCR / 454 sequencing


ABSTRACT: As part of the ENCODE consortium the GENCODE project is producing a reference gene set through manual and automated gene prediction. In the current phase of ENCODE we have found strong evidence that many lncRNAs transcript termini are still unknown. This experiment aims to set up an experimental validation strategy to accurately determine the 5' and 3' ends of transcripts, which is based on semi-nested RACE extensions of annotated 5' and 3' ends followed by high throughput sequencing. A total of 400 highly expressed lncRNA transcript models from Gencode 7 which did not have any CAGE/PET support were selected as the test set whereas 25 transcripts with transcript start site (TSS) supported by CAGE tags and transcript termination site (TTS) supported by PET ditags formed the positive control set. Transcript ends were amplified by RACE-PCR from brain and testis RNA samples and sequenced using the Roche 454 platform. The sequencing was performed at the Centre for Genomic Regulation (CRG), Barcelona, Spain.

ORGANISM(S): Homo sapiens

SUBMITTER: Jose Gonzalez 

PROVIDER: E-MTAB-1226 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications


Within the ENCODE Consortium, GENCODE aimed to accurately annotate all protein-coding genes, pseudogenes, and noncoding transcribed loci in the human genome through manual curation and computational methods. Annotated transcript structures were assessed, and less well-supported loci were systematically, experimentally validated. Predicted exon-exon junctions were evaluated by RT-PCR amplification followed by highly multiplexed sequencing readout, a method we called RT-PCR-seq. Seventy-nine perce  ...[more]

Publication: 1/2

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