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Coordinating the party: assembly factors and ribogenesis.

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  • 1Howard Hughes Medical Institute, Yale University, New Haven, CT 06520, USA; Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520, USA; Department of Chemistry, Yale University, New Haven, CT 06520, USA.

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Hydroxyl-radical footprinting mapped RNA structures within whole cells. This revealed the function of assembly factors in ribosomal subunit assembly and intermediate structural states.

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Area of Science:

  • Molecular Biology
  • Structural Biology
  • Biochemistry

Background:

  • Ribosome biogenesis is a complex process involving numerous assembly factors.
  • Understanding the dynamic structural changes during ribosome assembly is crucial for cell biology.

Purpose of the Study:

  • To investigate the role of assembly factors in the late stages of ribosomal subunit assembly.
  • To visualize the structural features of intermediate states during this process.

Main Methods:

  • Utilized hydroxyl-radical footprinting, a technique for mapping RNA structures in vivo.
  • Applied this method to analyze RNA structures within whole cells.

Main Results:

  • Determined the specific roles of various assembly factors during final ribosomal subunit assembly stages.
  • Visualized distinct structural features present in intermediate assembly states.

Conclusions:

  • Hydroxyl-radical footprinting is effective for studying RNA structures in whole cells.
  • Assembly factors play critical roles in guiding the structural transitions of ribosomal subunits.