Published July 5, 2021 | Version v6
Journal article Open

Enhanced Protein Isoform Characterization Through Long-Read Proteogenomics - Jurkat Samples and Reference Data

  • 1. University of Wisconsin - Madison
  • 2. University of Virginia
  • 3. Lifebit Biotech Ltd.
  • 4. University of Zurich
  • 5. University of Florida
  • 6. Science and Technology Consulting LLC

Description

 

The detection of physiologically relevant protein isoforms encoded by the human genome is critical to biomedicine.  Mass spectrometry (MS)-based proteomics is the preeminent method for protein detection, but isoform-resolved proteomic analysis relies on accurate reference databases that match the sample; neither a subset nor a superset database is ideal.  Long-read RNA sequencing (e.g. PacBio, Oxford Nanopore) provide full-length transcript sequencing, which can be used to predict full-length proteins.  Here, we describe a long-read proteogenomics approach for integrating matched long-read RNA-seq and MS-based proteomics data to enhance isoform characterization.  We introduce a classification scheme for protein isoforms, discovery novel protein isoforms, and present the first protein inference algorithm for the direct incorporation of long-read transcriptome data in protein inference to enable detection of protein isoforms that are intractable to MS detection.  We have released an open-source Nextflow pipeline that integrates long-read RNA-sequencing in a proteomic workflow for isoform-resolved analysis.

Companion Repositories:

  1. Long-Read-Proteogenomics Workflow GitHub Repository Release
  2. Long-Read-Proteogenomics Analysis GitHub Repository Release

Companion Datasets

  1. TEST Data for Long-Read-Proteogenomics Workflow GitHub Actions
  2. Long-Read-Proteogenomics Workflow Results using Jurkat Sample data

This Repository contains the  Jurkat Samples and Reference Data

Files

jurkat_classification.txt

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