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Campbell MT, Chen D, Glish GL. Identifying the D-Pentoses Using Water Adduction to Lithium Cationized Molecule. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:1420-1424. [PMID: 28411310 DOI: 10.1007/s13361-017-1656-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 03/07/2017] [Accepted: 03/08/2017] [Indexed: 06/07/2023]
Abstract
A method has been developed that is capable of distinguishing an exhaustive list of underivatized D-pentoses with only a mass spectrometer. Electrospray ionization (ESI) of a solution containing a pentose and a lithium salt yields [Pentose + Li]+. These lithiated pentoses adduct water in a quadrupole ion trap. The reaction rate of water adduction is unique for several of the pentose isomers. Additionally, there are multiple potential gas-phase lithiation sites to form [Pentose + Li]+. A mixture of ions with at least one reactive (water adducting) and at least one unreactive (non-adducting) lithiation site is formed for each pentose. The water adduction reaction rate along with the unreactive fraction of lithiated pentose can be used to completely discriminate all D-pentoses. Graphical Abstract ᅟ.
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Affiliation(s)
- Matthew T Campbell
- Department of Chemistry, Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - Dazhe Chen
- Department of Chemistry, Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA
| | - Gary L Glish
- Department of Chemistry, Caudill Laboratories, The University of North Carolina at Chapel Hill, Chapel Hill, NC, 27599-3290, USA.
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52
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Gray CJ, Schindler B, Migas LG, Pičmanová M, Allouche AR, Green AP, Mandal S, Motawia MS, Sánchez-Pérez R, Bjarnholt N, Møller BL, Rijs AM, Barran PE, Compagnon I, Eyers CE, Flitsch SL. Bottom-Up Elucidation of Glycosidic Bond Stereochemistry. Anal Chem 2017; 89:4540-4549. [PMID: 28350444 DOI: 10.1021/acs.analchem.6b04998] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The lack of robust, high-throughput, and sensitive analytical strategies that can conclusively map the structure of glycans has significantly hampered progress in fundamental and applied aspects of glycoscience. Resolution of the anomeric α/β glycan linkage within oligosaccharides remains a particular challenge. Here, we show that "memory" of anomeric configuration is retained following gas-phase glycosidic bond fragmentation during tandem mass spectrometry (MS2). These findings allow for integration of MS2 with ion mobility spectrometry (IM-MS2) and lead to a strategy to distinguish α- and β-linkages within natural underivatized carbohydrates. We have applied this fragment-based hyphenated MS technology to oligosaccharide standards and to de novo sequencing of purified plant metabolite glycoconjugates, showing that the anomeric signature is also observable in fragments derived from larger glycans. The discovery of the unexpected anomeric memory effect is further supported by IR-MS action spectroscopy and ab initio calculations. Quantum mechanical calculations provide candidate geometries for the distinct anomeric fragment ions, in turn shedding light on gas-phase dissociation mechanisms of glycosidic linkages.
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Affiliation(s)
- Christopher J Gray
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
| | - Baptiste Schindler
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Lukasz G Migas
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
| | - Martina Pičmanová
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences and Center for Synthetic Biology, University of Copenhagen , 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Abdul R Allouche
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France
| | - Anthony P Green
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
| | - Santanu Mandal
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
| | - Mohammed S Motawia
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences and Center for Synthetic Biology, University of Copenhagen , 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Raquel Sánchez-Pérez
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences and Center for Synthetic Biology, University of Copenhagen , 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Nanna Bjarnholt
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences and Center for Synthetic Biology, University of Copenhagen , 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Birger L Møller
- Plant Biochemistry Laboratory, Department of Plant and Environmental Sciences and Center for Synthetic Biology, University of Copenhagen , 40 Thorvaldsensvej, DK-1871 Frederiksberg C, Copenhagen, Denmark
| | - Anouk M Rijs
- Radboud University , Institute for Molecules and Materials, FELIX Laboratory, Toernooiveld 7c, 6525ED Nijmegen, The Netherlands
| | - Perdita E Barran
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom.,Michael Barber Centre for Collaborative Mass Spectrometry, Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
| | - Isabelle Compagnon
- Institut Lumière Matière, UMR5306 Université Lyon 1-CNRS, Université de Lyon 69622 Villeurbanne Cedex, France.,Institut Universitaire de France IUF , 103 Boulevard St. Michel, 75005 Paris, France
| | - Claire E Eyers
- Department of Biochemistry, Institute of Integrative Biology, University of Liverpool , Crown Street, Liverpool, L69 7ZB, United Kingdom
| | - Sabine L Flitsch
- School of Chemistry & Manchester Institute of Biotechnology, The University of Manchester , 131 Princess Street, Manchester, M1 7DN, United Kingdom
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53
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Bythell BJ, Abutokaikah MT, Wagoner AR, Guan S, Rabus JM. Cationized Carbohydrate Gas-Phase Fragmentation Chemistry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2017; 28:688-703. [PMID: 27896699 DOI: 10.1007/s13361-016-1530-x] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 10/13/2016] [Accepted: 10/14/2016] [Indexed: 05/04/2023]
Abstract
We investigate the fragmentation chemistry of cationized carbohydrates using a combination of tandem mass spectrometry, regioselective labeling, and computational methods. Our model system is D-lactose. Barriers to the fundamental glyosidic bond cleavage reactions, neutral loss pathways, and structurally informative cross-ring cleavages are investigated. The most energetically favorable conformations of cationized D-lactose were found to be similar. In agreement with the literature, larger group I cations result in structures with increased cation coordination number which require greater collision energy to dissociate. In contrast with earlier proposals, the B n -Y m fragmentation pathways of both protonated and sodium-cationized analytes proceed via protonation of the glycosidic oxygen with concerted glycosidic bond cleavage. Additionally, for the sodiated congeners our calculations support sodiated 1,6-anhydrogalactose B n ion structures, unlike the preceding literature. This affects the subsequent propensity of formation and prediction of B n /Y m branching ratio. The nature of the anomeric center (α/β) affects the relative energies of these processes, but not the overall ranking. Low-energy cross-ring cleavages are observed for the metal-cationized analytes with a retro-aldol mechanism producing the 0,2 A 2 ion from the sodiated forms. Theory and experiment support the importance of consecutive fragmentation processes, particularly for the protonated congeners at higher collision energies. Graphical Abstract ᅟ.
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Affiliation(s)
- Benjamin J Bythell
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA.
| | - Maha T Abutokaikah
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Ashley R Wagoner
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Shanshan Guan
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
| | - Jordan M Rabus
- Department of Chemistry and Biochemistry, University of Missouri, St. Louis, MO, 63121, USA
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54
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Boschmans J, Lemière F, Sobott F. Analyzing complex mixtures of drug-like molecules: Ion mobility as an adjunct to existing liquid chromatography-(tandem) mass spectrometry methods. J Chromatogr A 2017; 1490:80-88. [DOI: 10.1016/j.chroma.2017.02.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 01/24/2017] [Accepted: 02/09/2017] [Indexed: 12/17/2022]
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55
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Greisch JF, Chmela J, Harding ME, Wunderlich D, Schäfer B, Ruben M, Klopper W, Schooss D, Kappes MM. Correlation of the structural information obtained for europium-chelate ensembles from gas-phase photoluminescence and ion-mobility spectroscopy with density-functional computations and ligand-field theory. Phys Chem Chem Phys 2017; 19:6105-6112. [PMID: 28191564 DOI: 10.1039/c6cp04656h] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a combined investigation of europium(iii)9-oxo-phenalen-1-one (PLN) coordination complexes, [Eu(PLN)4AE]+ with AE = Mg, Ca, and Sr, using gas-phase photoluminescence, trapped ion-mobility spectrometry and density-functional computations. In order to sort out the structural impact of the alkali earth dications on the photoluminescence spectra, the experimental data are compared to the predicted ligand-field splittings as well as to the collision cross-sections for different isomers of [Eu(PLN)4AE]+. The best fitting interpretation is that one isomer family predominantly contributes to the recorded luminescence. The present work demonstrates the complexity of the coordination patterns of multicenter lanthanoid chelates involved in dynamical equilibria and the pertinence of using isolation techniques to elucidate their photophysical properties.
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Affiliation(s)
- Jean-François Greisch
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Jiří Chmela
- Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Michael E Harding
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Dirk Wunderlich
- Bruker Daltonik GmbH, Fahrenheitstraße 4, 28359 Bremen, Germany.
| | - Bernhard Schäfer
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany.
| | - Mario Ruben
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. and Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), CNRS-Université de Strasbourg, Rue du Loess 23, BP 43, 67034 Strasbourg Cedex 2, France
| | - Wim Klopper
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. and Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Detlef Schooss
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. and Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
| | - Manfred M Kappes
- Institute of Nanotechnology, Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany. and Institute of Physical Chemistry, Karlsruhe Institute of Technology (KIT), Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany
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56
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Affiliation(s)
- Zhixun Luo
- State
Key Laboratory for Structural Chemistry of Unstable and Stable Species,
Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - A. W. Castleman
- Departments
of Chemistry and Physics, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Shiv N. Khanna
- Department
of Physics, Virginia Commonwealth University, Richmond, Virginia 23284, United States
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57
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Harvey DJ, Scarff CA, Edgeworth M, Pagel K, Thalassinos K, Struwe WB, Crispin M, Scrivens JH. Travelling-wave ion mobility mass spectrometry and negative ion fragmentation of hybrid and complex N-glycans. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:1064-1079. [PMID: 27477117 PMCID: PMC5150983 DOI: 10.1002/jms.3828] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 07/22/2016] [Accepted: 07/27/2016] [Indexed: 05/20/2023]
Abstract
Nitrogen collisional cross sections (CCSs) of hybrid and complex glycans released from the glycoproteins IgG, gp120 (from human immunodeficiency virus), ovalbumin, α1-acid glycoprotein and thyroglobulin were measured with a travelling-wave ion mobility mass spectrometer using dextran as the calibrant. The utility of this instrument for isomer separation was also investigated. Some isomers, such as Man3 GlcNAc3 from chicken ovalbumin and Man3 GlcNAc3 Fuc1 from thyroglobulin could be partially resolved and identified by their negative ion fragmentation spectra obtained by collision-induced decomposition (CID). Several other larger glycans, however, although existing as isomers, produced only asymmetric rather than separated arrival time distributions (ATDs). Nevertheless, in these cases, isomers could often be detected by plotting extracted fragment ATDs of diagnostic fragment ions from the negative ion CID spectra obtained in the transfer cell of the Waters Synapt mass spectrometer. Coincidence in the drift times of all fragment ions with an asymmetric ATD profile in this work, and in the related earlier paper on high-mannose glycans, usually suggested that separations were because of conformers or anomers, whereas symmetrical ATDs of fragments showing differences in drift times indicated isomer separation. Although some significant differences in CCSs were found for the smaller isomeric glycans, the differences found for the larger compounds were usually too small to be analytically useful. Possible correlations between CCSs and structural types were also investigated, and it was found that complex glycans tended to have slightly smaller CCSs than high-mannose glycans of comparable molecular weight. In addition, biantennary glycans containing a core fucose and/or a bisecting GlcNAc residue fell on different mobility-m/z trend lines to those glycans not so substituted with both of these substituents contributing to larger CCSs. Copyright © 2016 John Wiley & Sons, Ltd.
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Affiliation(s)
- David J Harvey
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK.
| | - Charlotte A Scarff
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
- Current address, Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Matthew Edgeworth
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
- MedImmune, Sir Aaron Klug Building, Granta Park, Cambridge, CB21 6GH, UK
| | - Kevin Pagel
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse. 3, 14159, Berlin, Germany
| | - Konstantinos Thalassinos
- Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London, London, WC1E 7HX, UK
| | - Weston B Struwe
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Max Crispin
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - James H Scrivens
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
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58
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Gray C, Thomas B, Upton R, Migas L, Eyers C, Barran P, Flitsch S. Applications of ion mobility mass spectrometry for high throughput, high resolution glycan analysis. Biochim Biophys Acta Gen Subj 2016; 1860:1688-709. [DOI: 10.1016/j.bbagen.2016.02.003] [Citation(s) in RCA: 108] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2015] [Revised: 02/01/2016] [Accepted: 02/02/2016] [Indexed: 12/21/2022]
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59
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Jeanne Dit Fouque K, Lavanant H, Zirah S, Steinmetz V, Rebuffat S, Maître P, Afonso C. IRMPD Spectroscopy: Evidence of Hydrogen Bonding in the Gas Phase Conformations of Lasso Peptides and their Branched-Cyclic Topoisomers. J Phys Chem A 2016; 120:3810-6. [DOI: 10.1021/acs.jpca.6b04496] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Kevin Jeanne Dit Fouque
- Normandie Univ, COBRA, UMR 6014, FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 Rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - Hélène Lavanant
- Normandie Univ, COBRA, UMR 6014, FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 Rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - Séverine Zirah
- Muséum national d’Histoire naturelle, Sorbonne Universités, Centre national de la Recherche scientifique, Laboratoire Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS-MNHN, CP 54, 57 rue Cuvier, 75005 Paris, France
| | - Vincent Steinmetz
- Laboratoire de Chimie Physique, Université Paris Sud, UMR 8000 CNRS, Faculté des Sciences, Bât. 349, 91405 Orsay Cedex, France
| | - Sylvie Rebuffat
- Muséum national d’Histoire naturelle, Sorbonne Universités, Centre national de la Recherche scientifique, Laboratoire Molécules de Communication et Adaptation des Microorganismes, UMR 7245 CNRS-MNHN, CP 54, 57 rue Cuvier, 75005 Paris, France
| | - Philippe Maître
- Laboratoire de Chimie Physique, Université Paris Sud, UMR 8000 CNRS, Faculté des Sciences, Bât. 349, 91405 Orsay Cedex, France
| | - Carlos Afonso
- Normandie Univ, COBRA, UMR 6014, FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 Rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
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60
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Harvey DJ, Abrahams JL. Fragmentation and ion mobility properties of negative ions from N-linked carbohydrates: Part 7. Reduced glycans. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2016; 30:627-634. [PMID: 26842584 DOI: 10.1002/rcm.7467] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Revised: 11/21/2015] [Accepted: 11/22/2015] [Indexed: 06/05/2023]
Abstract
RATIONALE Negative ion collision-induced dissociation (CID) spectra of released N-glycans provide very informative structural information relating to branching patterns and location of residues such as fucose. For some structural studies, particularly those involving chromatography, glycans are often reduced to avoid production of multiple peaks from α- and β-anomers. We examined the effect of reduction on the production of diagnostic fragment ions and on the ion mobility properties of N-glycans. METHODS Released N-glycans from the glycoproteins bovine fetuin, ribonuclease B, chicken ovalbumin, and porcine thyroglobulin were reduced with sodium cyanoborohydride and both negative ion CID spectra and ion mobility properties of their phosphate adducts were examined with a Waters Synapt G2Si travelling-wave ion mobility mass spectrometer with electrospray sample introduction. Estimated collisional cross sections were measured with dextran as the calibrant, RESULTS Fragment ions were similar to those from the unreduced glycans with the exception that the prominent (2,4) A cleavage ion from the reducing terminus was replaced by a prominent [M-H3 PO4](-) ion. Other ions arising from the chitobiose core were of lower relative abundance than those from the unreduced glycans. Estimated collisional cross sections were similar to those of the unreduced compounds but with symmetrical arrival time distribution (ATD) profiles, unlike those of the unreduced glycans whose peaks often contained prominent asymmetry. This observation showed that this asymmetry was due to anomer separation. CONCLUSIONS Reduction of the reducing terminal GlcNAc residue resulted in fewer diagnostic ions from the chitobiose core but fragmentation of the remainder of the molecules generally paralleled that of the unreduced glycans. Thus, most structural information, with the exception of the linkage position of fucose on the core GlcNAc, was available. ATD peaks were symmetrical with the result that cross sections were more appropriate for data-base searching than those from the non-reduced compounds where asymmetry produced lower precision in the measurement.
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Affiliation(s)
- David J Harvey
- Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Jodie L Abrahams
- Department of Chemistry and Biomolecular Sciences, Macquarie University, NSW 2109, Australia
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61
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Harvey DJ, Scarff CA, Edgeworth M, Struwe WB, Pagel K, Thalassinos K, Crispin M, Scrivens J. Travelling-wave ion mobility and negative ion fragmentation of high-mannose N-glycans. JOURNAL OF MASS SPECTROMETRY : JMS 2016; 51:219-35. [PMID: 26956389 PMCID: PMC4821469 DOI: 10.1002/jms.3738] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Revised: 12/01/2015] [Accepted: 12/02/2015] [Indexed: 05/02/2023]
Abstract
The isomeric structure of high-mannose N-glycans can significantly impact biological recognition events. Here, the utility of travelling-wave ion mobility mass spectrometry for isomer separation of high-mannose N-glycans is investigated. Negative ion fragmentation using collision-induced dissociation gave more informative spectra than positive ion spectra with mass-different fragment ions characterizing many of the isomers. Isomer separation by ion mobility in both ionization modes was generally limited, with the arrival time distributions (ATD) often showing little sign of isomers. However, isomers could be partially resolved by plotting extracted fragment ATDs of the diagnostic fragment ions from the negative ion spectra, and the fragmentation spectra of the isomers could be extracted by using ions from limited areas of the ATD peak. In some cases, asymmetric ATDs were observed, but no isomers could be detected by fragmentation. In these cases, it was assumed that conformers or anomers were being separated. Collision cross sections of the isomers in positive and negative fragmentation mode were estimated from travelling-wave ion mobility mass spectrometry data using dextran glycans as calibrant. More complete collision cross section data were achieved in negative ion mode by utilizing the diagnostic fragment ions. Examples of isomer separations are shown for N-glycans released from the well-characterized glycoproteins chicken ovalbumin, porcine thyroglobulin and gp120 from the human immunodeficiency virus. In addition to the cross-sectional data, details of the negative ion collision-induced dissociation spectra of all resolved isomers are discussed.
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Affiliation(s)
- David J. Harvey
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
| | - Charlotte A. Scarff
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
- Current address, Astbury Centre for Structural Molecular Biology, School of Molecular and Cellular Biology, University of Leeds, Leeds, LS2 9JT, UK
| | - Matthew Edgeworth
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
| | - Weston B. Struwe
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
- Chemistry Research Laboratory, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Kevin Pagel
- Institute of Chemistry and Biochemistry, Freie Universität Berlin, Takustrasse. 3, 14159 Berlin, Germany
- Fritz Haber Institute of the Max Planck Society, Faradayweg 4-6, 14195 Berlin, Germany
| | - Konstantinos Thalassinos
- Institute of Structural and Molecular Biology, Division of Biosciences, University College London, London WC1E 6BT, UK
- Institute of Structural and Molecular Biology, Department of Biological Sciences, Birkbeck College, University of London, London, UK
| | - Max Crispin
- Oxford Glycobiology Institute, Department of Biochemistry, University of Oxford, South Parks Road, Oxford, OX1 3QU, UK
| | - Jim Scrivens
- Department of Biological Sciences, University of Warwick, Coventry, CV47AL, UK
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62
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Corinti D, Mannina L, Chiavarino B, Steinmetz V, Fornarini S, Crestoni ME. IRMPD signature of protonated pantothenic acid, an ubiquitous nutrient. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.01.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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63
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Markworth PB, Adamson BD, Coughlan NJA, Goerigk L, Bieske EJ. Photoisomerization action spectroscopy: flicking the protonated merocyanine–spiropyran switch in the gas phase. Phys Chem Chem Phys 2015; 17:25676-88. [DOI: 10.1039/c5cp01567g] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Molecular ions drifting through buffer gas are exposed to tunable laser light causing a detectable change in their collision cross section and arrival time at the ion detector. The effect can be exploited to obtain action electronic spectra for selected molecular isomers in the gas phase.
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Affiliation(s)
| | - Brian D. Adamson
- School of Chemistry
- The University of Melbourne
- Melbourne
- Australia
| | | | - Lars Goerigk
- School of Chemistry
- The University of Melbourne
- Melbourne
- Australia
| | - Evan J. Bieske
- School of Chemistry
- The University of Melbourne
- Melbourne
- Australia
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64
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Zehnacker A. Optical spectroscopy coupled with mass spectrometry methods. Phys Chem Chem Phys 2015; 17:25672-5. [DOI: 10.1039/c5cp90155c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This themed issue reports on recent progress in the fast developing field of spectroscopy of ions by means of mass spectrometry coupled with optical spectroscopy. It focuses on both the experimental and theoretical aspects of this topic.
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Affiliation(s)
- Anne Zehnacker
- CNRS
- Institut des Sciences Moléculaires d’Orsay (ISMO/UMR8214) and Univ. Paris Sud
- Orsay
- France
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