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David Bartel, Professor of Biology, MIT, HHMI, and Whitehead Institute
Tuesday 27 September 2022, 11:00-12:00
Regulation of mRNA translation and decay
- 👤 Speaker: David Bartel, Professor of Biology, MIT, HHMI, and Whitehead Institute
- 📅 Date & Time: Tuesday 27 September 2022, 11:00 - 12:00
- 📍 Venue: In person in the Max Perutz Lecture Theatre (CB2 0QH) and via Zoom, link: https://mrc-lmb-cam-ac-uk.zoom.us/j/99553714360?pwd=bVRGN3o1a0dsazJIMnVIemlRbjltZz09
Abstract
The Bartel lab investigates the molecular pathways that regulate gene expression by affecting the stability or translation of mRNAs. One interest is microRNAs, which are small regulatory RNAs that typically direct the destruction of their target transcripts. This talk will describe how some unusual target transcripts direct the destruction of microRNAs, and the widespread use of this phenomenon to shape metazoan microRNA levels. MicroRNAs accelerate shortening of the poly(A) tails of their mRNA targets. In most contexts, tail shortening reduces mRNA stability, but in early development, it reduces mRNA translation. Indeed, mRNA-specific modulation of tail lengths in the cytoplasm—both tail lengthening as well as tail shortening—plays a widespread role in regulating mRNA translation in oocytes and early embryos. This talk will describe how these widespread changes in cytoplasmic tail-lengths are specified.
Series This talk is part of the MRC LMB Seminar Series series.
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