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The MultiBac Protein Complex Production Platform at the EMBL
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Production of Multi-subunit Membrane Protein Complexes.

Burak V Kabasakal1,2, Qiyang Jiang3, Christiane Schaffitzel4

  • 1School of Biochemistry, University of Bristol, Bristol, UK.

Methods in Molecular Biology (Clifton, N.J.)
|December 10, 2020
PubMed
Summary

Producing membrane proteins for study is challenging. This protocol details bacterial expression and isolation of the holo-translocon, aiding future membrane protein complex research.

Keywords:
Complex purificationEndogenous hostExpression in bacteriaMembrane protein complexTranslocon

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Area of Science:

  • Biochemistry and structural biology
  • Membrane protein research
  • Biotechnology

Background:

  • Membrane proteins are crucial for medicine and biotechnology.
  • Production challenges hinder membrane protein structure-function studies.
  • Limited translocation and integration impede protein folding and quantity.

Purpose of the Study:

  • To present a protocol for producing membrane protein complexes.
  • To facilitate structural and functional studies of membrane proteins.
  • To provide a starting point for other membrane protein complex production.

Main Methods:

  • Bacterial expression system for membrane proteins.
  • Protocol for isolation of membrane protein complexes.
  • Optimization of expression, detergents, and purification tags.

Main Results:

  • Successful expression of a seven-subunit membrane protein complex.
  • Isolation protocol for the bacterial holo-translocon.
  • Demonstration of a viable method for membrane protein production.

Conclusions:

  • The presented protocol enables production of membrane protein complexes.
  • Bacterial expression and isolation are key for structural studies.
  • This work supports further research into membrane protein function.