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Membrane protein expression and analysis in yeast
Katrien Claes1, Mouna Guerfal1, Nico Callewaert1
1Unit of Medical Biotechnology, Department of Medical Protein Research, VIB-UGhent, Ghent, Belgium; Inflammation Research Center, VIB-UGhent, Ghent, Belgium; Department of Biochemistry and Microbiology, Laboratory for Protein Biochemistry and Biomolecular Engineering, Ghent University, Ghent, Belgium.
This protocol details yeast expression of membrane proteins using Yarrowia lipolytica and Pichia pastoris. It covers protein analysis via SDS-PAGE, Western blotting, and radioligand binding assays for functional assessment.
Area of Science:
- Biochemistry
- Molecular Biology
- Yeast Genetics
Background:
- Membrane proteins are crucial for cellular functions but challenging to study.
- Yeast expression systems offer a powerful platform for producing these proteins.
Purpose of the Study:
- To provide a comprehensive protocol for expressing and analyzing membrane proteins in yeast.
- To enable quantification of functional membrane proteins using radioligand binding assays.
Main Methods:
- Generation of yeast strains (Yarrowia lipolytica, Pichia pastoris) for membrane protein expression.
- Isolation and preparation of membrane protein samples from yeast.
- Analysis of protein expression levels using SDS-PAGE and Western blotting.
- Quantification of functional membrane proteins via radioligand binding assays.
Main Results:
- Demonstration of successful membrane protein expression in yeast.
- Validation of SDS-PAGE and Western blotting for expression level assessment.
- Establishment of a radioligand binding assay for quantifying functional proteins.
Conclusions:
- This protocol provides a robust framework for membrane protein research in yeast.
- The methods described facilitate the study of membrane protein expression, analysis, and function.
