The role of Mediator and Little Elongation Complex in transcription termination

Hidehisa Takahashi, Amol Ranjan, Shiyuan Chen, Hidefumi Suzuki, Mio Shibata, Tomonori Hirose, Hiroko Hirose, Kazunori Sasaki, Ryota Abe, Kai Chen, Yanfeng He, Ying Zhang, Ichigaku Takigawa, Tadasuke Tsukiyama, Masashi Watanabe, Satoshi Fujii, Midori Iida, Junichi Yamamoto, Yuki Yamaguchi, Yutaka SuzukiMasaki Matsumoto, Keiichi I. Nakayama, Michael P. Washburn, Anita Saraf, Laurence Florens, Shigeo Sato, Chieri Tomomori-Sato, Ronald C. Conaway, Joan W. Conaway, Shigetsugu Hatakeyama

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Mediator is a coregulatory complex that regulates transcription of Pol II-dependent genes. Previously, we showed that human Mediator subunit MED26 plays a role in the recruitment of Super Elongation Complex (SEC) or Little Elongation Complex (LEC) to regulate the expression of certain genes. MED26 plays a role in recruiting SEC to protein-coding genes including c-myc and LEC to small nuclear RNA (snRNA) genes. However, how MED26 engages SEC or LEC to regulate distinct genes is unclear. Here, we provide evidence that MED26 recruits LEC to modulate transcription termination of non-polyadenylated transcripts including snRNAs and mRNAs encoding replication-dependent histone (RDH) at Cajal bodies. Our findings indicate that LEC recruited by MED26 promotes efficient transcription termination by Pol II through interaction with CBC-ARS2 and NELF/DSIF, and promotes 3′ end processing by enhancing recruitment of Integrator or Heat Labile Factor to snRNA or RDH genes, respectively.

Original languageEnglish
Article number1063
JournalNature communications
Volume11
Issue number1
DOIs
Publication statusPublished - Dec 1 2020

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Physics and Astronomy(all)

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  • Cite this

    Takahashi, H., Ranjan, A., Chen, S., Suzuki, H., Shibata, M., Hirose, T., Hirose, H., Sasaki, K., Abe, R., Chen, K., He, Y., Zhang, Y., Takigawa, I., Tsukiyama, T., Watanabe, M., Fujii, S., Iida, M., Yamamoto, J., Yamaguchi, Y., ... Hatakeyama, S. (2020). The role of Mediator and Little Elongation Complex in transcription termination. Nature communications, 11(1), [1063]. https://doi.org/10.1038/s41467-020-14849-1