Automating data analysis for hydrogen/deuterium exchange mass spectrometry using data-independent acquisition methodology
Journal Article
·
· Nature Communications
- Univ. of Calgary, AB (Canada)
- Trajan Scientific & Medical, Raleigh, NC (United States)
- Thermo Fisher Scientific, San Jose, CA (United States)
- Harvard Medical School, Boston, MA (United States)
- Univ. of Texas, Houston, TX (United States). MD Anderson Cancer Center; Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
We present a hydrogen/deuterium exchange workflow coupled to tandem mass spectrometry (HX-MS2) that supports the acquisition of peptide fragment ions alongside their peptide precursors. The approach enables true auto-curation of HX data by mining a rich set of deuterated fragments, generated by collisional-induced dissociation (CID), to simultaneously confirm the peptide ID and authenticate MS1-based deuteration calculations. The high redundancy provided by the fragments supports a confidence assessment of deuterium calculations using a combinatorial strategy. The approach requires data-independent acquisition (DIA) methods that are available on most MS platforms, making the switch to HX-MS2 straightforward. Importantly, we find that HX-DIA enables a proteomics-grade approach and wide-spread applications. Considerable time is saved through auto-curation and complex samples can now be characterized and at higher throughput. We illustrate these advantages in a drug binding analysis of the ultra-large protein kinase DNA-PKcs, isolated directly from mammalian cells.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Canada Discovery Grants; National Institutes of Health (NIH); USDOE
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 2470753
- Journal Information:
- Nature Communications, Journal Name: Nature Communications Journal Issue: 1 Vol. 15; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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