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Related Concept Videos

RNA-seq03:21

RNA-seq

RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Next-generation Sequencing03:00

Next-generation Sequencing

The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.

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Isoform discovery by targeted cloning, 'deep-well' pooling and parallel sequencing.

Kourosh Salehi-Ashtiani1, Xinping Yang, Adnan Derti

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Nature Methods
|June 17, 2008
PubMed
Summary

Discovering an organism's complete set of protein-coding sequences (ORFeome) is vital. A new, cost-effective method uses RT-PCR and next-generation sequencing for efficient ORFeome discovery in eukaryotes.

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Area of Science:

  • Genomics
  • Molecular Biology
  • Bioinformatics

Background:

  • Understanding an organism's complete set of protein-coding sequences (ORFeome) is crucial for systems-level biological insights.
  • Traditional methods for ORFeome characterization are often expensive and time-consuming, limiting comprehensive discovery.
  • The identification of all major protein isoforms is essential for a complete understanding of species-level biology.

Purpose of the Study:

  • To present a novel, potentially genome-wide methodology for the efficient discovery of coding isoforms.
  • To overcome the limitations of cost and labor associated with conventional ORFeome approaches.
  • To establish a versatile pipeline applicable to any eukaryotic species with a sequenced genome.

Main Methods:

  • Utilizing reverse transcriptase (RT)-PCR for initial transcript capture.
  • Employing recombinational cloning for efficient assembly of coding sequences.
  • Integrating 'deep-well' pooling with a next-generation sequencing platform for high-throughput analysis.

Main Results:

  • Demonstration of a new pipeline for capturing novel coding isoforms.
  • Significant reduction in the cost and labor required for ORFeome exploration.
  • Establishment of a scalable method for comprehensive isoform discovery.

Conclusions:

  • The developed methodology offers a powerful and efficient approach to ORFeome discovery.
  • This pipeline facilitates a more complete understanding of eukaryotic gene expression and function.
  • The approach is adaptable for broad application across diverse eukaryotic species.