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Title: Anatomy of Protein Electrospray Ionization Mass Spectra by Superconducting Tunnel Junction Mass and Energy Spectrometry

Journal Article · · Analytical Chemistry

Cryogenic superconducting tunnel junction (STJ) detectors have the advantage of single-particle sensitivity, high quantum efficiency, low noise, and the ability to detect the time and relative impact energy of deposited ions. This makes them attractive for use in mass spectrometry (MS) and as a form of energy spectrometry. STJ cryodetectors have been coupled to time-offlight (TOF) mass spectrometers equipped with a matrix-assisted laser desorption ionization (MALDI) source and to an electrospray ionization (ESI) TOF mass spectrometer. Here, a lab-made linear ion trap (LIT) mass spectrometer system was coupled to an ESI source and a 16-channel Nb-STJ array with improved readout electronics. The goal was to investigate fundamentals of ESI-generated protein ions by further exploiting the advantage of resolving these ions in a third dimension of the relative energy deposited into the STJs. The proteins equine cytochrome c, bovine carbonic anhydrase, bovine serum albumin, and murine immunoglobulin G were studied using this ESI-LIT-STJ-MS instrument. Multiply charged monomers, multimers, and fragments from metastable ions were resolved from monomer peaks by differences in ion deposition energy even when these ions have the same mass-to-charge ratio as the corresponding monomer. The determination of fragment mass from metastable decomposition is accomplished without knowing the charge state of the fragment. The average charge state of the multimers is reduced with each addition of a protein which is a direct reflection of the surface area available for charging. Multiply charged in-source fragments have also been observed and distinguished in the mass spectrum of carbonic anhydrase by using the differences in the energy deposited in the STJs.

Research Organization:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Organization:
USDOE National Nuclear Security Administration (NNSA); National Science Foundation (NSF)
Grant/Contract Number:
AC52-07NA27344; CHE-1611146; DBI-0454980
OSTI ID:
1871777
Report Number(s):
LLNL-JRNL-829451; 1045392; TRN: US2306800
Journal Information:
Analytical Chemistry, Vol. 94, Issue 13; ISSN 0003-2700
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English

References (34)

Ion detection efficiency in SIMS: journal October 2000
Application of ion-impact energy measurement to electrospray ionization mass spectrometry of proteins and protein mixtures journal July 2001
Kinetic-energy-sensitive mass spectrometry for separation of different ions with the same m / z value journal December 2008
Tandem mass specatrometry of carbonic anhydrase (29 kDa) journal January 1995
Influence of the wavelength in high-irradiance ultraviolet laser desorption mass spectrometry of organic molecules journal December 1985
High density processing electronics for superconducting tunnel junction x-ray detector arrays
  • Warburton, W. K.; Harris, J. T.; Friedrich, S.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 784 https://doi.org/10.1016/j.nima.2015.02.004
journal June 2015
Superconducting particle detectors journal July 1996
Low-Temperature Particle Detectors journal December 1996
Investigating ion-surface collisions with a niobium superconducting tunnel junction detector in a time-of-flight mass spectrometer journal April 2000
Biopolymer mass spectrometer with cryogenic particle detectors journal February 1996
Reproducible preparation of nanospray tips for capillary electrophoresis coupled to mass spectrometry using 3D printed grinding device: Liquid Phase Separations journal December 2015
Frequency scan for the analysis of high mass ions generated by matrix-assisted laser desorption/ionization in a Paul trap journal September 1999
Tandem mass spectrometry of very large molecules: serum albumin sequence information from multiply charged ions formed by electrospray ionization journal November 1991
Cryogenic particle detectors journal March 1996
Cryogen-free cryostat for large-scale arrays of superconducting tunnel junction ion detectors in time-of-flight mass spectrometry
  • Kushino, A.; Ohkubo, M.; Chen, Y. E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 559, Issue 2 https://doi.org/10.1016/j.nima.2005.12.206
journal April 2006
Thermal conduction measurement of miniature coaxial cables between 0.3 and 4.5K for the wiring of superconducting detectors journal September 2005
Mass Spectrometry of Au 10 (4- tert- butylbenzenethiolate) 10 Nanoclusters Using Superconducting Tunnel Junction Cryodetection Reveals Distinct Metastable Fragmentation journal February 2022
High-efficiency Detection of 66 000 Da Protein Molecules Using a Cryogenic Detector in a Matrix-assisted Laser Desorption/Ionization Time-of-flight Mass Spectrometer journal December 1996
Characterization of ZnO Nanoparticles using Superconducting Tunnel Junction Cryodetection Mass Spectrometry journal April 2017
The analysis of polystyrene and polystyrene aggregates into the mega dalton mass range by cryodetection MALDI TOF MS journal February 2008
Characterization of Mega-Dalton-Sized Nanoparticles by Superconducting Tunnel Junction Cryodetection Mass Spectrometry journal February 2018
Tunneling into Superconductors at Temperatures below 1°K journal May 1962
The ion detection efficiency of microchannel plates (MCPs) journal April 2002
Electrospray ionization for mass spectrometry of large biomolecules journal October 1989
Direct mass analysis of neutral molecules by superconductivity journal January 2011
Detection of single macromolecules using a cryogenic particle detector coupled to a biopolymer mass spectrometer journal June 1996
Using a superconducting tunnel junction detector to measure the secondary electron emission efficiency for a microchannel plate detector bombarded by large molecular ions journal January 2000
Energy-sensitive cryogenic detectors for high-mass biomolecule mass spectrometry journal January 1999
Analysis of Megadalton Ions Using Cryodetection MALDI Time-of-Flight Mass Spectrometry journal July 2005
High-resolution tandem mass spectrometry of carbonic anhydrase journal February 1994
Determination of Iron Content and Dispersity of Intact Ferritin by Superconducting Tunnel Junction Cryodetection Mass Spectrometry journal August 2015
Characterization of Cytochrome c Variants with High-Resolution FTICR Mass Spectrometry: Correlation of Fragmentation and Structure journal July 1995
Simultaneous measurement of flight time and energy of large matrix-assisted laser desorption ionization ions with a superconducting tunnel junction detector journal October 1997
Ion Mobility and Collision-Induced Dissociation Analysis of Carbonic Anhydrase 2 journal October 2010

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