Charging and supercharging of proteins for mass spectrometry: recent insights into the mechanisms of electrospray ionization

L Konermann, H Metwally, Q Duez, I Peters - Analyst, 2019 - pubs.rsc.org
Electrospray ionization (ESI) is an essential technique for transferring proteins from solution
into the gas phase for mass spectrometry and ion mobility spectrometry. The mechanisms …

[HTML][HTML] Top-down proteomics for the analysis of proteolytic events-Methods, applications and perspectives

A Tholey, A Becker - Biochimica et Biophysica Acta (BBA)-Molecular Cell …, 2017 - Elsevier
Mass spectrometry based proteomics is an indispensable tool for almost all research areas
relevant for the understanding of proteolytic processing, ranging from the identification of …

Chemical additives enable native mass spectrometry measurement of membrane protein oligomeric state within intact nanodiscs

JE Keener, DE Zambrano, G Zhang… - Journal of the …, 2018 - ACS Publications
Membrane proteins play critical biochemical roles but remain challenging to study. Recently,
native or nondenaturing mass spectrometry (MS) has made great strides in characterizing …

Investigation of charge-state-dependent compaction of protein ions with native ion mobility–mass spectrometry and theory

AD Rolland, LS Biberic, JS Prell - Journal of the American Society …, 2022 - ACS Publications
The precise relationship between native gas-phase protein ion structure, charge,
desolvation, and activation remains elusive. Much evidence supports the Charge Residue …

Advances in ionization for mass spectrometry

PM Peacock, WJ Zhang, S Trimpin - Analytical chemistry, 2017 - ACS Publications
Integral to advances in mass spectrometry (MS) are developments in ionization technology,
which is constantly evolving because of advances in fundamental understanding …

Ultrafast (1 μs) mixing and fast protein folding in nanodrops monitored by mass spectrometry

DN Mortensen, ER Williams - Journal of the American Chemical …, 2016 - ACS Publications
The use of theta-glass emitters and mass spectrometry to monitor reactions that occur as fast
as one μs is demonstrated. Acidified aqueous solutions containing unfolded proteins are …

Grotthuss molecular dynamics simulations for modeling proton hopping in electrosprayed water droplets

L Konermann, S Kim - Journal of Chemical Theory and …, 2022 - ACS Publications
Excess protons in water exhibit unique transport properties because they can rapidly hop
along H-bonded water wires. Considerable progress has been made in unraveling this …

A modified drift tube ion mobility-mass spectrometer for charge-multiplexed collision-induced unfolding

DD Vallejo, DA Polasky, RT Kurulugama… - Analytical …, 2019 - ACS Publications
Collision-induced unfolding (CIU) of protein ions and their noncovalent complexes offers
relatively rapid access to a rich portfolio of biophysical information, without the need to tag or …

How to run molecular dynamics simulations on electrospray droplets and gas phase proteins: Basic guidelines and selected applications

L Konermann, H Metwally, RG McAllister, V Popa - Methods, 2018 - Elsevier
The ability to transfer intact proteins and protein complexes into the gas phase by
electrospray ionization (ESI) has opened up numerous mass spectrometry (MS)-based …

Extended protein ions are formed by the chain ejection model in chemical supercharging electrospray ionization

MT Donor, SA Ewing, MA Zenaidee… - Analytical …, 2017 - ACS Publications
Supercharging electrospray ionization can be a powerful tool for increasing charge states in
mass spectra and generating unfolded ion structures, yet key details of its mechanism …