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Related Concept Videos

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Using TTchem-seq for profiling nascent transcription and measuring transcript elongation.

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Transient transcriptome sequencing (TT-seq) with chemical fragmentation (TTchem-seq) and CDK9 inhibition (DRB/TTchem-seq) allows in vivo measurement of RNA polymerase II elongation rates. This method provides high-resolution transcription profiles genome-wide.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biochemistry

Background:

  • Genome-wide transcription dynamics are crucial for understanding gene regulation.
  • High-throughput sequencing methods enable the study of nascent RNA.
  • 4-thiouridine (4SU) labeling captures newly synthesized RNA for sequencing.

Purpose of the Study:

  • To detail protocols for TTchem-seq and DRB/TTchem-seq.
  • To enable high-resolution genome-wide transcription profiling.
  • To measure in vivo RNA polymerase II (RNAPII) elongation rates.

Main Methods:

  • Chemical RNA fragmentation for transient transcriptome sequencing (TTchem-seq).
  • Combination with 5,6-dichlorobenzimidazole 1-β-D-ribofuranoside (DRB) to inhibit CDK9.
  • High-throughput sequencing and computational analysis of labeled RNA.

Main Results:

  • TTchem-seq provides high-resolution transcription profiles.
  • DRB/TTchem-seq successfully measures RNAPII elongation rates in vivo.
  • Detailed protocols are provided for experimental execution and data analysis.

Conclusions:

  • TTchem-seq and DRB/TTchem-seq are powerful techniques for studying transcription dynamics.
  • These methods offer precise measurement of RNAPII elongation rates.
  • The protocols facilitate genome-wide analysis of gene expression and regulation.