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Macromolecular assemblies supporting transcription-translation coupling.

Michael W Webster1,2,3,4, Albert Weixlbaumer1,2,3,4

  • 1Department of Integrated Structural Biology, Institut de Gé né tique et de Biologie Molé culaire et Cellulaire (IGBMC), Illkirch Cedex, France.

Transcription
|September 27, 2021
PubMed
Summary
This summary is machine-generated.

Transcription-translation coupling in prokaryotes links RNA synthesis and decoding. Recent structural and biochemical studies reveal the molecular mechanisms and cellular roles of these coordinated processes.

Keywords:
Cryo-EMExpressome; NusG; NusATranscription-translation coupling

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Area of Science:

  • Molecular Biology
  • Gene Expression Regulation
  • Structural Biology

Background:

  • Transcription-translation coupling is a key regulatory mechanism in prokaryotes.
  • Previous knowledge indicated that translation influences transcription and vice versa.

Purpose of the Study:

  • To review recent advances in understanding the molecular basis of transcription-translation coupling.
  • To discuss the cellular implications of these findings.

Main Methods:

  • Structural characterization of RNA polymerase-ribosome complexes (expressomes) at near-atomic resolution.
  • Direct visualization of expressomes within cells.
  • Biochemical and biophysical analyses of transcription-translation systems and their components.

Main Results:

  • Near-atomic resolution structures of expressomes reveal their various states.
  • Direct cellular imaging provides in vivo insights into coupling.
  • Biochemical data elucidate the mechanistic underpinnings of coupled transcription and translation.

Conclusions:

  • Recent structural and biochemical data have significantly advanced our understanding of transcription-translation coupling.
  • These insights are crucial for comprehending the role of coupling in cellular processes.