Ion-Ion and Ion-Molecule Reactions at the Surface of Proteins Produced by Nanospray. Information on the Number of Acidic Residues and Control of the Number of Ionized Acidic and Basic Residues
Verkerk, Udo H., Kebarle, Paul
Published in Journal of the American Society for Mass Spectrometry (01.08.2005)
Published in Journal of the American Society for Mass Spectrometry (01.08.2005)
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Journal Article
Structure of the Observable Histidine Radical Cation in the Gas Phase: A Captodative α-Radical Ion
Steill, Jeffrey, Zhao, Junfang, Siu, Chi-Kit, Ke, Yuyong, Verkerk, Udo H, Oomens, Jos, Dunbar, Robert C, Hopkinson, Alan C, Siu, K.W. Michael
Published in Angewandte Chemie (International ed.) (01.01.2008)
Published in Angewandte Chemie (International ed.) (01.01.2008)
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Journal Article
Cations Derived from Fentanyls Generated by Atmospheric Pressure Photoionization in the Presence of Ammonia: An IMS-MS Study
Lau, Justin Kai-Chi, Romanov, Vladimir, Lukow, Stefan, Hopkinson, Alan C, Verkerk, Udo H
Published in Journal of the American Society for Mass Spectrometry (07.07.2021)
Published in Journal of the American Society for Mass Spectrometry (07.07.2021)
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Journal Article
Features of the ESI mechanism that affect the observation of multiply charged noncovalent protein complexes and the determination of the association constant by the titration method
Peschke, Michael, Verkerk, Udo H., Kebarle, Paul
Published in Journal of the American Society for Mass Spectrometry (01.10.2004)
Published in Journal of the American Society for Mass Spectrometry (01.10.2004)
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Journal Article
Selective Syntheses of Partially Etherified Derivatives of Tetrakis(2-hydroxyphenyl)ethene. An Alternative to the Calix[4]arene Ligand System
Fujita, Megumi, Qi, Guizhong, Verkerk, Udo H, Dzwiniel, Trevor L, McDonald, Robert, Stryker, Jeffrey M
Published in Organic letters (05.08.2004)
Published in Organic letters (05.08.2004)
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Journal Article
Metal Ion Complexes with HisGly: Comparison with PhePhe and PheGly
Dunbar, Robert C, Oomens, Jos, Berden, Giel, Lau, Justin Kai-Chi, Verkerk, Udo H, Hopkinson, Alan C, Siu, K. W. Michael
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (27.06.2013)
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (27.06.2013)
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Journal Article
Conformation Switching in Gas-Phase Complexes of Histidine with Alkaline Earth Ions
Dunbar, Robert C, Hopkinson, Alan C, Oomens, Jos, Siu, Chi-Kit, Siu, K. W. Michael, Steill, Jeffrey D, Verkerk, Udo H, Zhao, Junfang
Published in The journal of physical chemistry. B (30.07.2009)
Published in The journal of physical chemistry. B (30.07.2009)
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Journal Article
Structures of an Ions Derived from Protonated Pentaglycine and Pentaalanine: Results from IRMPD Spectroscopy and DFT Calculations
Zhao, Junfang, Lau, Justin Kai-Chi, Grzetic, Josipa, Verkerk, Udo H., Oomens, Jos, Siu, K. W. Michael, Hopkinson, Alan C.
Published in Journal of the American Society for Mass Spectrometry (01.12.2013)
Published in Journal of the American Society for Mass Spectrometry (01.12.2013)
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Journal Article
Structure and Reactivity of the Distonic and Aromatic Radical Cations of Tryptophan
Piatkivskyi, Andrii, Osburn, Sandra, Jaderberg, Kendall, Grzetic, Josipa, Steill, Jeffrey D., Oomens, Jos, Zhao, Junfang, Lau, Justin Kai-Chi, Verkerk, Udo H., Hopkinson, Alan C., Siu, K. W. Michael, Ryzhov, Victor
Published in Journal of the American Society for Mass Spectrometry (01.04.2013)
Published in Journal of the American Society for Mass Spectrometry (01.04.2013)
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Journal Article
Hydration Energies in the Gas Phase of Select (MX)mM+ Ions, Where M+ = Na+, K+, Rb+, Cs+, NH4+ and X- = F-, Cl-, Br-, I-, NO2-, NO3-. Observed Magic Numbers of (MX)mM+ Ions and Their Possible Significance
BLADES, Arthur T., PESCHKE, Michael, VERKERK, Udo H., KEBARLE, Paul
Published in Journal of the American Chemical Society (29.09.2004)
Published in Journal of the American Chemical Society (29.09.2004)
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Journal Article
Structure of the [M + H – H2O]+ Ion from Tetraglycine: A Revisit by Means of Density Functional Theory and Isotope Labeling
Verkerk, Udo H, Zhao, Junfang, Van Stipdonk, Michael J, Bythell, Benjamin J, Oomens, Jos, Hopkinson, Alan C, Siu, K.W. Michael
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (23.06.2011)
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (23.06.2011)
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Journal Article
a2 Ion Derived from Triglycine: An N1-Protonated 4-Imidazolidinone
Verkerk, Udo H, Siu, Chi-Kit, Steill, Jeffrey D, El Aribi, Houssain, Zhao, Junfang, Rodriquez, Christopher F, Oomens, Jos, Hopkinson, Alan C, Siu, K. W. Michael
Published in The journal of physical chemistry letters (04.03.2010)
Published in The journal of physical chemistry letters (04.03.2010)
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Journal Article
Bond Dissociation Energies of Solvated Silver(I)−Amide Complexes: Competitive Threshold Collision-Induced Dissociations and Calculations
Romanov, Vladimir, Siu, Chi-Kit, Verkerk, Udo H, Hopkinson, Alan C, Siu, K. W. Michael
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (08.07.2010)
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (08.07.2010)
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Journal Article
Infrared Multiple-Photon Dissociation Spectroscopy of Tripositive Ions: Lanthanum–Tryptophan Complexes
Verkerk, Udo H, Zhao, Junfang, Saminathan, Irine S, Lau, Justin Kai-Chi, Oomens, Jos, Hopkinson, Alan C, Siu, K.W. Michael
Published in Inorganic chemistry (16.04.2012)
Published in Inorganic chemistry (16.04.2012)
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Journal Article
Fragmentations of protonated cyclic-glycylglycine and cyclic-alanylalanine
Shek, P.Y. Iris, Lau, Justin Kai-Chi, Zhao, Junfang, Grzetic, Josipa, Verkerk, Udo H., Oomens, Jos, Hopkinson, Alan C., Siu, K.W. Michael
Published in International journal of mass spectrometry (15.04.2012)
Published in International journal of mass spectrometry (15.04.2012)
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Journal Article
Binding Energies of the Silver Ion to Alcohols and Amides: A Theoretical and Experimental Study
Romanov, Vladimir, Siu, Chi-Kit, Verkerk, Udo H, Aribi, Houssain El, Hopkinson, Alan C, Siu, K. W. Michael
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (30.10.2008)
Published in The journal of physical chemistry. A, Molecules, spectroscopy, kinetics, environment, & general theory (30.10.2008)
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Journal Article
Infrared Irradiation in the Collision Cell of a Hybrid Tandem Quadrupole/Time-of-Flight Mass Spectrometer for Declustering and Cleaning of Nanoelectrosprayed Protein Complex Ions
El-Faramawy, Ayman, Guo, Yuzhu, Verkerk, Udo H, Thomson, Bruce A, Siu, K.W. Michael
Published in Analytical chemistry (Washington) (01.12.2010)
Published in Analytical chemistry (Washington) (01.12.2010)
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Journal Article
Erratum to: Structure and Reactivity of the Distonic and Aromatic Radical Cations of Tryptophan
Piatkivskyi, Andrii, Osburn, Sandra, Jaderberg, Kendall, Grzetic, Josipa, Steill, Jeffrey D., Oomens, Jos, Zhao, Junfang, Lau, Justin Kai-Chi, Verkerk, Udo H., Hopkinson, Alan C., Siu, K. W. Michael, Ryzhov, Victor
Published in Journal of the American Society for Mass Spectrometry (01.10.2013)
Published in Journal of the American Society for Mass Spectrometry (01.10.2013)
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Journal Article