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Production of Recombinant PRMT Proteins using the Baculovirus Expression Vector System
08:57

Production of Recombinant PRMT Proteins using the Baculovirus Expression Vector System

Published on: July 17, 2021

Recombinant proteoliposomes prepared using baculovirus expression systems.

Kanta Tsumoto1, Tetsuro Yoshimura

  • 1Graduate School of Engineering, Mie University, Tsu, Mie, Japan.

Methods in Enzymology
|November 17, 2009
PubMed
Summary

This study introduces a novel method for creating proteoliposomes using baculovirus expression systems. This technique successfully reconstitutes membrane proteins like TSHR and AChRalpha, enabling functional studies.

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Last Updated: Jun 18, 2026

Production of Recombinant PRMT Proteins using the Baculovirus Expression Vector System
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Area of Science:

  • Biochemistry
  • Molecular Biology
  • Biophysics

Background:

  • Proteoliposomes are crucial for studying membrane protein function.
  • Existing methods for proteoliposome preparation can be complex.
  • Baculovirus expression systems offer a robust platform for recombinant protein production.

Purpose of the Study:

  • To develop and validate a novel method for preparing recombinant proteoliposomes.
  • To reconstitute specific transmembrane proteins, TSHR and AChRalpha, into various liposome types.
  • To demonstrate the functional integrity and visualization of reconstituted proteins.

Main Methods:

  • Utilizing a baculovirus (Autographa californica nuclear polyhedrosis virus; AcNPV) gene expression system to produce recombinant membrane proteins.
  • Collecting recombinant AcNPV budded viruses (BVs) expressing target proteins on their envelopes.
  • Fusing BV envelopes with liposomes containing acidic phospholipids via viral glycoprotein gp64 activation at low pH.
  • Reconstituting TSHR and AChRalpha into large unilamellar vesicles (LUVs), multilamellar vesicles (MLVs), and giant unilamellar vesicles (GUVs).

Main Results:

  • Enzyme-linked immunosorbent assay (ELISA) confirmed specific ligand binding for reconstituted TSHR and AChRalpha.
  • Reconstituted proteins successfully bound antibodies against them.
  • TSHRs reconstituted on proteo-GUVs were visualized using confocal laser scanning microscopy with fluorescence immunostaining.

Conclusions:

  • The novel baculovirus-based method provides an effective means for preparing functional recombinant proteoliposomes.
  • This technique facilitates the reconstitution of complex membrane protein systems.
  • The prepared proteoliposomes are suitable for functional assays and advanced imaging techniques.