Issue 1, 2020

Parallelized identification of on- and off-target protein interactions

Abstract

Genetic selection combined with next-generation sequencing enables the simultaneous interrogation of the functionality and stability of large numbers of naturally occurring, engineered, or computationally designed protein variants in parallel. We display hundreds of engineered proteins on the surface of yeast cells, select for binding to a set of target molecules by flow cytometry, and sequence the starting pool as well as selected pools to obtain enrichment values for each displayed protein with each target. We show that this high-throughput workflow of multiplex genetic selections followed by large-scale sequencing and comparative analysis allows not only the determination of relative affinities, but also the monitoring of specificity profiles for hundreds to thousands of protein–protein and protein–small molecule interactions in parallel. The approach not only identifies new interactions of designed proteins, but also detects unintended and undesirable off-target interactions. This provides a general framework for screening of engineered protein binders, which often have no negative selection or design step as part of their development pipelines. Hence, this method will be generally useful in the development of protein-based therapeutics.

Graphical abstract: Parallelized identification of on- and off-target protein interactions

Supplementary files

Article information

Article type
Paper
Submitted
07 九月 2019
Accepted
26 十一月 2019
First published
26 十一月 2019

Mol. Syst. Des. Eng., 2020,5, 349-357

Author version available

Parallelized identification of on- and off-target protein interactions

J. Dou, I. Goreshnik, C. Bryan, D. Baker and E. Strauch, Mol. Syst. Des. Eng., 2020, 5, 349 DOI: 10.1039/C9ME00118B

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements