Publications
Journal of proteome researchApr 2025 |
24
(
4
),
2006-2016
DOI:
10.1021/acs.jproteome.4c01040

Affinity Purification Mass Spectrometry on the Orbitrap-Astral Mass Spectrometer Enables High-Throughput Protein-Protein Interaction Mapping

Serrano, Lia R; Pelin, Adrian; Arrey, Tabiwang N; Damoc, Nicolaie E; Richards, Alicia L; Zhou, Yuan; Lancaster, Noah M; Peters-Clarke, Trenton M; Pashkova, Anna; Jang, Gwendolyn M; Eckhardt, Manon; Quarmby, Scott T; Zeller, Martin; Hermanson, Daniel; Stewart, Hamish; Hock, Christian; Makarov, Alexander; Zabrouskov, Vlad; Krogan, Nevan J; Coon, Joshua J; Swaney, Danielle L
Product Used
Genes
Abstract
Classical proteomics experiments offer high-throughput protein quantification but lack direct evidence of the spatial organization of the proteome, including protein-protein interaction (PPIs) networks. While affinity purification mass spectrometry (AP-MS) is the method of choice for generating these networks, technological impediments have stymied the throughput of AP-MS sample collection and therefore constrained the rate and scale of experiments that can be performed. Here, we build on advances in mass spectrometry hardware that have rendered high-flow liquid chromatography separations a viable solution for faster throughput quantitative proteomics. We describe our methodology using the Orbitrap-Astral mass spectrometer with 7 min, high-flow separations to analyze 216 AP-MS samples in ∼29 h. We show that the ion-focusing advancements, rapid mass analysis, and sensitive ion detection facilitate narrow-bin data-independent acquisition on a chromatographically practical timescale. Further, we highlight several aspects of state-of-the-art confidence-scoring software that warrant reinvestigation given the analytical characteristics of the Orbitrap-Astral mass spectrometer through comparisons with an enrichment-based thresholding technique. With our data, we generated an interaction map between 998 human proteins and 59 viral proteins. These results hold promise in expediting the throughput of AP-MS experiments, enabling more high-powered PPI studies.
Product Used
Genes

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