Active, Monomeric β1AR in <72h: Cell-Free GPCR Synthesis via Multiplexed Nanodisc Screening
G protein-coupled receptors (GPCRs) are targets for ~35% of approved drugs, yet they remain notoriously difficult to produce. Traditional detergent solubilization frequently strips stabilizing lipids, increases aggregation, and reduces ligand-binding competency. As a result, discovery teams waste weeks iterating conditions before obtaining structure-grade material.
This application note showcases how the eProtein Discovery™ system overcomes these bottlenecks by bypassing cellular toxicity and detergent extraction steps, enabling the co-translational insertion of membrane proteins directly into pre-assembled nanodiscs.
In this application note, you'll discover:
- A rapid 72-hour workflow: How to move from DNA to a highly pure, structure-ready β1-adrenergic receptor (β1AR) in less than 72 hours.
- Automated multiplex screening: How digital microfluidics multiplexes up to 11 GPCR constructs against 8 distinct nanodisc and cell-free conditions in just ~24 hours.
- A 3-fold increase in activity: See how rationally designed lipid panels (like DOPG and POPC/POPS mixtures) outperform generic formulations, delivering a 3-fold greater functional binding fraction.
- High-yield scale-up and polishing: Learn how to achieve up to ~100 µg/mL of purified receptor and use SEC polishing to enrich the monomeric active fraction to ~45%.
Why It Matters
The eProtein Discovery workflow compresses iterative membrane protein optimization cycles from months into days. By replacing slow, cell-based host engineering and empirical detergent trials with a rapid, automated cell-free screening workflow, discovery teams gain a reliable path to generating premium reagents for modern structural biology and early-stage drug discovery.
Contributors
Thomas Guilliam - Principal Scientist, Nuclera
Elena Rahmani - Protein Workflow Research Associate
Ruben Tomás - Sr Technical Marketing Manager
Download: Active, Monomeric β1AR in <72h: cell-free gpcr synthesis via multiplexed nanodisc screening
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