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Related Experiment Videos

Solution structure of dimeric Mnt repressor (1-76)

M J Burgering1, R Boelens, D E Gilbert

  • 1Bijvoet Center for Biomolecular Research, Utrecht University, The Netherlands.

Biochemistry
|December 20, 1994
PubMed
Summary
This summary is machine-generated.

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The Mnt repressor

Area of Science:

  • Structural biology
  • Molecular genetics
  • Biochemistry

Background:

  • Wild-type Mnt repressor is a tetrameric protein.
  • A C-terminal deletion mutant, Mnt (1-76), forms a dimer.

Purpose of the Study:

  • Determine the solution structure of the Mnt (1-76) dimer using NMR.
  • Investigate the structural homology between Mnt repressor and other repressors.

Main Methods:

  • Nuclear Magnetic Resonance (NMR) spectroscopy, including 2D and triple-resonance 3D techniques.
  • Nuclear Overhauser Effect (NOE) analysis for secondary structure identification.
  • Distance geometry and restrained simulated annealing for structure generation.

Main Results:

  • NMR assignments for Mnt (1-76) dimer were obtained.

Related Experiment Videos

  • The N-terminal region (residues 1-44) shares structural similarity with the Arc repressor.
  • The C-terminal helix, though less stable, was positioned through intersubunit NOEs.

    • Conclusions:

    • The Mnt (1-76) dimer structure reveals a conserved N-terminal fold similar to Arc repressor.
    • The study elucidates the structural organization of the Mnt repressor dimer.
    • NMR data provided insights into the stability and positioning of secondary structure elements.