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Screening Peptide-Binding Partners for GenX via Phage Display.
Kameron Burton1,2, Samaneh Ghadami2, Kristen Dellinger2
1Department of Chemistry, North Carolina Agricultural and Technical State University, Greensboro, NC 27411, USA.
International Journal of Molecular Sciences
|March 13, 2024
Summary
Researchers developed a new method using phage display to find peptides that bind to GenX, a toxic chemical. This discovery helps identify human proteins interacting with GenX, aiding in understanding its biological impacts and designing remediation devices.
Area of Science:
- Environmental Chemistry
- Biochemistry
- Molecular Biology
Background:
- Per- and poly-fluoroalkyl substances (PFAS), including GenX, are persistent, toxic synthetic compounds requiring effective environmental remediation.
- Current remediation methods for PFAS are costly and limited by compound diversity.
- The interaction of GenX with human proteins remains largely unexplored.
Purpose of the Study:
- To develop a platform for screening short peptides that specifically bind to GenX.
- To identify human proteins that interact with GenX.
- To understand the molecular basis of GenX-protein interactions for potential bioengineering applications.
Main Methods:
- Phage display was employed to screen for peptides with specific binding affinity to GenX.
- Nuclear Magnetic Resonance (NMR) was used to measure binding affinities of identified peptides.
- Bioinformatic tools, including docking and molecular dynamics simulations, predicted binding sites between GenX and a human protein.
Main Results:
- Two peptides demonstrating specific binding to GenX were identified.
- Amino acid contributions to peptide-GenX binding were elucidated, and binding affinities were quantified.
- Ankyrin-repeat-domain-containing protein 36B was identified as a human protein with sequence homology to a GenX-binding peptide, with predicted binding interactions.
Conclusions:
- A novel platform for screening chemical-binding peptides was established.
- The study identified potential biological targets of GenX, offering insights into its toxicity mechanisms.
- Findings contribute to the development of bioengineered devices for GenX detection and remediation.
