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Structural insights into the function of Elongator.

Udit Dalwadi1, Calvin K Yip2

  • 1Department of Biochemistry and Molecular Biology, The University of British Columbia, Vancouver, BC, V6T 1Z3, Canada.

Cellular and Molecular Life Sciences : CMLS
|January 15, 2018
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Summary
This summary is machine-generated.

Elongator, a protein complex involved in transcription and tRNA modification, has its functions and subunit regulation poorly understood. Recent structural studies offer new insights into this essential cellular machinery.

Keywords:
Electron microscopyElongatorFamilial dysautonomiaTranscriptionX-ray crystallographytRNA modification

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Area of Science:

  • Molecular Biology
  • Biochemistry
  • Cell Biology

Background:

  • Elongator is a conserved protein complex essential for transcription regulation, alpha-tubulin acetylation, and tRNA modification.
  • Defects in Elongator are linked to human diseases like familial dysautonomia.
  • Elongator comprises six subunits (Elp1-6) organized into two subcomplexes, Elp1/2/3 and Elp4/5/6.

Purpose of the Study:

  • To provide an overview of Elongator's proposed functions.
  • To elucidate the molecular mechanisms underlying Elongator's diverse activities.
  • To highlight insights from recent structural studies on Elongator.

Main Methods:

  • Literature review of Elongator functions.
  • Analysis of recent structural studies on the Elongator complex.
  • Integration of biochemical and genetic data.

Main Results:

  • Elp3 is identified as the catalytic subunit with radical S-adenosyl-L-methionine and histone acetyltransferase domains.
  • The Elp4/5/6 subcomplex exhibits ATP-modulated tRNA binding activity.
  • Structural studies provide a mechanistic basis for Elongator's multifunctional nature.

Conclusions:

  • Understanding Elongator's structure-function relationship is crucial for deciphering its roles in cellular processes.
  • Elongator's complex subunit organization and interactions are key to its diverse functions.
  • Further structural and functional studies will continue to unravel the intricacies of Elongator.