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Nanopore Platforms for Protein Analysis


EMSL Project ID
60470

Abstract

Nanopore-based protein sensing has the potential to revolutionize the field of proteomics by providing single-molecule protein sequencing at amino acid level resolution. However, even if nanopore-based proteomics were currently capable of de novo protein sequencing, a protein’s amino acid sequence alone cannot inform other important aspects about the proteome such as protein function, abundance, or post-translational modifications. Protein function, specifically, is a critical component to consider because protein function largely determines phenotype. There is currently a need for a high-throughput protein functional assay that could reduce the bottlenecks and inaccuracy in genome annotation to enable more accurate genome to phenotype predictions. We propose to integrate activity-based probes (ABPs) with a nanopore-based sequencing platform to directly detect both protein binding and function. Furthermore, we will develop a strategy that uses reporter oligonucleotides to barcode each ABP, allowing us to detect many protein functions simultaneously, a significant improvement in throughput over conventional ABP protein function assays. By using a nanopore platform to create this functional assay, we anticipate that this proposed work could integrate with nanopore-based native protein sequencing once it becomes available to enable the direct correlation between protein sequence and function.

Project Details

Start Date
2022-10-01
End Date
N/A
Status
Active

Team

Principal Investigator

Jayde Aufrecht
Institution
Environmental Molecular Sciences Laboratory

Team Members

Sankarganesh Krishnamoorthy
Institution
Environmental Molecular Sciences Laboratory

Robert Egbert
Institution
Pacific Northwest National Laboratory

Mary Lipton
Institution
Environmental Molecular Sciences Laboratory

David Wunschel
Institution
Pacific Northwest National Laboratory