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Updated: Dec 27, 2025

Green Fluorescent Protein-based Expression Screening of Membrane Proteins in Escherichia coli
Published on: January 6, 2015
Membrane Protein Production in Escherichia coli
Benjamin C McIlwain1, Ali A Kermani2
1Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA. mcilwain@umich.edu.
This study presents a protocol for overexpressing and purifying membrane proteins using Escherichia coli (E. coli). It aims to overcome bottlenecks in structural biology research by providing a basis for lab-specific protocols.
Area of Science:
- Structural Biology
- Molecular Biology
- Biochemistry
Background:
- Escherichia coli (E. coli) is a widely used organism in structural biology labs.
- E. coli serves as a production system for recombinant membrane proteins.
- Purification of homogeneous membrane protein samples from E. coli is a significant challenge.
Purpose of the Study:
- To provide a robust protocol for the overexpression and purification of membrane proteins in E. coli.
- To establish a foundation for developing customized protocols for specific membrane proteins.
- To offer detailed insights into the purification process and underlying theoretical principles.
Main Methods:
- Overexpression of membrane proteins in E. coli.
- Development of a purification protocol for membrane proteins.
- Detailed documentation of purification steps and theoretical considerations.
Main Results:
- A comprehensive protocol for membrane protein overexpression and purification in E. coli.
- Extensive notes and theoretical background on the purification process.
- A basis for researchers to adapt and optimize protocols for their specific proteins of interest.
Conclusions:
- The presented protocol facilitates the production of homogeneous membrane protein samples.
- This work addresses a key bottleneck in structural biology research involving membrane proteins.
- Researchers can utilize this protocol to develop tailored purification strategies for diverse membrane proteins.
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