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The human dystrophin gene requires 16 hours to be transcribed and is cotranscriptionally spliced

Nature Genetics volume 9, pages 184–190 (1995)Cite this article

Abstract

The largest known gene is the human dystrophin gene, which has 79 exons spanning at least 2,300 kilobases (kb). Transcript accumulation was monitored from four regions of the gene following induction of expression in muscle cell cultures. Quantitative reverse transcription–polymerase chain reaction (RT–PCR) results indicate that approximately 12 h are required for transcription of 1,770 kb (at an average elongation rate of 2.4 kb min−1), extrapolating to a transcription time of 16 h for the complete gene. Accumulation profiles for spliced and total transcript demonstrated that transcripts are spliced at the 5′ end before transcription is complete providing strong evidence for cotranscriptional splicing. The rate of transcript accumulation was reduced at the 3′ end of the gene relative to the 5′ end, perhaps due to premature termination of transcription complexes.

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Authors and Affiliations

  1. Department of Genetics and Research Institute, Hospital for Sick Children, Toronto, Ontario, M5G 1X8, Canada

    Christine N. Tennyson, Henry J. Klamut & Ronald G. Worton

  2. Department of Molecular and Medical Genetics, University of Toronto, Toronto, Ontario, M5G 1X8, Canada

    Christine N. Tennyson & Ronald G. Worton

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  2. Henry J. Klamut
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  3. Ronald G. Worton
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Tennyson, C., Klamut, H. & Worton, R. The human dystrophin gene requires 16 hours to be transcribed and is cotranscriptionally spliced. Nat Genet 9, 184–190 (1995). https://doi.org/10.1038/ng0295-184

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