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Title: Best practices and benchmarks for intact protein analysis for top-down mass spectrometry

Journal Article · · Nature Methods
ORCiD logo [1];  [1];  [2];  [2]; ORCiD logo [2];  [3]; ORCiD logo [4]; ORCiD logo [5]; ORCiD logo [6]; ORCiD logo [3];  [7];  [7];  [1];  [1];  [8]; ORCiD logo [4]; ORCiD logo [9];  [1]; ORCiD logo [7]; ORCiD logo [10] more »; ORCiD logo [11];  [12];  [3]; ORCiD logo [13]; ORCiD logo [12]; ORCiD logo [3]; ORCiD logo [2]; ORCiD logo [1] « less
  1. Northeastern Univ., Boston, MA (United States)
  2. Northeastern Univ., Evanston, IL (United States)
  3. Univ. of Wisconsin-Madison, Madison, WI (United States)
  4. Discovery Attribute Sciences, Thousand Oaks, CA (United States)
  5. Northeastern Univ., Boston, MA (United States); Alnylam Pharmaceuticals, Cambridge, MA (United States)
  6. Northeastern Univ., Boston, MA (United States); Biogen, Cambridge, MA (United States)
  7. Univ. of California, Los Angeles, CA (United States)
  8. Bruker Daltonics, Billerica, MA (United States)
  9. Northeastern Univ., Burlington, MA (United States)
  10. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
  11. Institut Pasteur, Paris (France)
  12. Eastwoods Consulting, Boylston, MA (United States)
  13. Spectroswiss, Lausanne (Switzerland)

One gene can give rise to many functionally distinct proteoforms, each of which has a characteristic molecular mass. Many laboratories, however, forgo the challenging mass analysis of intact proteins. Instead, these researchers resort to well-established methods for proteolytic digests. In this work, the Consortium for Top-Down Proteomics (CTDP) addresses the unmet need for robust protocols for obtaining intact protein mass spectra. We quantify and rationalize the signal suppression associated with common interfering substances. A decision tree, based upon sample composition and experimental goals, guides researchers to a given protocol. Cross-platform analytical benchmarks are provided to allow users to gauge their proficiency and to promote method standardization. This work should permit users at any experience level to obtain high-quality intact mass spectra of native and denatured proteins from mixtures of varying complexity, including intact antibodies and membrane proteins.

Research Organization:
Pacific Northwest National Laboratory (PNNL), Richland, WA (United States)
Sponsoring Organization:
USDOE
Grant/Contract Number:
AC05-76RL01830
OSTI ID:
1567191
Report Number(s):
PNNL-SA-141748
Journal Information:
Nature Methods, Vol. 16, Issue 7; ISSN 1548-7091
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 181 works
Citation information provided by
Web of Science

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Cited By (10)

Proteomics of Long‐Lived Mammals journal March 2020
High-throughput quantitative top-down proteomics journal January 2020
Monitoring glycation levels of a bispecific monoclonal antibody at subunit level by ultrahigh-resolution MALDI FT-ICR mass spectrometry journal December 2019
FLASHDeconv: Ultrafast, High-Quality Feature Deconvolution for Top-Down Proteomics journal February 2020
Quantifying the heterogeneity of macromolecular machines by mass photometry journal April 2020
Proteomic Approaches to Study SARS-CoV-2 Biology and COVID-19 Pathology journal January 2021
Monitoring glycation levels of a bispecific monoclonal antibody at subunit level by ultrahigh-resolution MALDI FT-ICR mass spectrometry journal December 2019
Top-Down Proteomics of Medicinal Cannabis journal September 2019
Analyzing ribosome remodeling in health and disease text January 2020
Imaging Isomers on a Biological Surface: A Review journal December 2019

Figures / Tables (6)