Cited by 71Mass Spectrometry Techniques and ApplicationsAdvanced Proteomics Techniques and ApplicationsProtein Structure and Dynamics

Native Top-Down Mass Spectrometry and Ion Mobility MS for Characterizing the Cobalt and Manganese Metal Binding of α-Synuclein Protein

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Wongkongkathep, Piriya, Han, Jong Yoon, Choi, Tae Su, Yin, Sheng, Kim, Hugh I., Loo, Joseph A.·2018·Journal of the American Society for Mass Spectrometry

Abstract

Structural characterization of intrinsically disordered proteins (IDPs) has been a major challenge in the field of protein science due to limited capabilities to obtain full-length high-resolution structures. Native ESI-MS with top-down MS was utilized to obtain structural features of protein-ligand binding for the Parkinson’s disease-related protein, α-synuclein (αSyn), which is natively unstructured. Binding of heavy metals has been implicated in the accelerated formation of αSyn aggregation. Using high-resolution Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry, native top-down MS with various fragmentation methods, including electron capture dissociation (ECD), collisional activated dissociation (CAD), and multistage tandem MS (MS 3 ), deduced the binding sites of cobalt and manganese to the C-terminal region of the protein. Ion mobility MS (IM-MS) revealed a collapse toward compacted states of αSyn upon metal binding. The combination of native top-down MS and IM-MS provides structural information of protein-ligand interactions for intrinsically disordered proteins.

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  • Native MS provides information on protein complex subunit stoichiometry, metal binding, protein interaction partners, and lipid binding.

    “Valuable information regarding protein complex subunit stoichiometry [42], metal-binding [43,44], protein interaction partners [45], and lipid binding [46] can be achieved using native MS.”

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  1. [51]Aaron S, Vladimir NU: α-Synuclein and metals In Protein Folding and Metal Ions; CRC Press, pp 169– 191 (2010)

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Authors
Wongkongkathep, P., Han, J. Y., Choi, T. S., Yin, S., Kim, H. I., & Loo, J. A.
Affiliations
  • Chulalongkorn University (TH)
  • Korea University (KR)
  • University of California, Los Angeles (US)
Corresponding author
Loo, Joseph A.
Venue
Journal of the American Society for Mass Spectrometry
Published
2018-06-27
Volume
29
Issue
9
Pages
1870-1880
ISSN
1044-0305 (ISSN-L)
OpenAlex
W2809702123
Cited by
71
References
83
Citations by year
2026: 6 · 2025: 5 · 2024: 2 · 2023: 15 · 2022: 8 · 2021: 7 · 2020: 12 · 2019: 13 · 2018: 3
FWCI
3.78
Type
journal article
Language
en
Open access
Locations
  • Journal of the American Society for Mass Spectrometry (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • eScholarship (California Digital Library) (submittedVersion)
Funders
  • National Institute of General Medical Sciences (R01GM103479)
  • U.S. Department of Energy
Topics
  • Physical Sciences › Chemistry › Spectroscopy › Mass Spectrometry Techniques and Applications
  • Physical Sciences › Chemistry › Spectroscopy › Advanced Proteomics Techniques and Applications
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Protein Structure and Dynamics
Keywords
alpha-synuclein, intrinsically disordered proteins, cobalt binding, manganese binding, metal binding sites, protein-ligand interactions, protein aggregation, Parkinson's disease, protein conformational change, native top-down mass spectrometry, ion mobility mass spectrometry, electron capture dissociation
MeSH terms
Cobalt, Manganese, Models, Molecular, Spectrometry, Mass, Electrospray Ionization, alpha-Synuclein, Tandem Mass Spectrometry, Intrinsically Disordered Proteins

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