51
|
Bartkowiak G, Popenda Ł, Jurga S, Schroeder G. Synthesis and NMR and mass spectrometric study of ammonioacetohydrazones of formylphenylboronic acids as novel ionic prospective sugar receptors. NEW J CHEM 2015. [DOI: 10.1039/c4nj02103g] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
We report sugar receptors in which the sensitivity of detection through MALDI mass spectrometry is enhanced due to the introduction of an ionic group to the receptor molecule.
Collapse
Affiliation(s)
- Grażyna Bartkowiak
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- NanoBioMedical Centre
| | - Łukasz Popenda
- NanoBioMedical Centre
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
| | - Stefan Jurga
- NanoBioMedical Centre
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- Faculty of Physics
| | - Grzegorz Schroeder
- Faculty of Chemistry
- Adam Mickiewicz University in Poznań
- 61-614 Poznań
- Poland
- NanoBioMedical Centre
| |
Collapse
|
52
|
Huang Y, Mao Y, Zong C, Lin C, Boons GJ, Zaia J. Discovery of a heparan sulfate 3-O-sulfation specific peeling reaction. Anal Chem 2014; 87:592-600. [PMID: 25486437 PMCID: PMC4287833 DOI: 10.1021/ac503248k] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
![]()
Heparan sulfate (HS) 3-O-sulfation determines
the binding specificity of HS/heparin for antithrombin III and plays
a key role in herpes simplex virus (HSV) infection. However, the low
natural abundance of HS 3-O-sulfation poses a serious
challenge for functional studies other than the two cases mentioned
above. By contrast, multiple distinct isoforms of 3-O-sulfotranserases exist in mammals (up to seven isoenzymes). Here
we describe a novel peeling reaction that specifically degrades HS
chains with 3-O-sulfated glucosamine at the reducing-end.
When HS/heparin is enzymatically depolymerized for compositional analysis,
3-O-sulfated glucosamine at the reducing ends appears
to be susceptible to degradation under mildly basic conditions. We
propose a 3-O-desulfation initiated peeling reaction
mechanism based on the intermediate and side-reaction products observed.
Our discovery calls for the re-evaluation of the natural abundance
and functions of HS 3-O-sulfation by taking into
consideration the negative impact of this novel peeling reaction.
Collapse
Affiliation(s)
- Yu Huang
- Department of Biochemistry, Boston University Medical Campus , 670 Albany Street, Boston, Massachusetts 02118, United States
| | | | | | | | | | | |
Collapse
|
53
|
Glatz Z. On-capillary derivatisation as an approach to enhancing sensitivity in capillary electrophoresis. Electrophoresis 2014; 36:744-63. [DOI: 10.1002/elps.201400449] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2014] [Revised: 10/09/2014] [Accepted: 10/11/2014] [Indexed: 12/23/2022]
Affiliation(s)
- Zdeněk Glatz
- Department of Biochemistry; Faculty of Science and CEITEC; Masaryk University; Brno Czech Republic
| |
Collapse
|
54
|
Schieferdecker S, König S, Weigel C, Dahse HM, Werz O, Nett M. Structure and biosynthetic assembly of gulmirecins, macrolide antibiotics from the predatory bacterium Pyxidicoccus fallax. Chemistry 2014; 20:15933-40. [PMID: 25287056 DOI: 10.1002/chem.201404291] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Indexed: 01/28/2023]
Abstract
The gulmirecins constitute a new class of glycosylated macrolides that were isolated from the predatory bacterium Pyxidicoccus fallax HKI 727. Their structures were solved by a combination of NMR spectroscopic experiments and chemical derivatization. Analysis of the annotated gulmirecin gene cluster complemented the configurational assignment and provided insights into the stereochemical course of the biosynthetic assembly. The gulmirecins exhibit strong activity against staphylococci, including methicillin-resistant Staphylococcus aureus, but no cytotoxic effects on human cells.
Collapse
Affiliation(s)
- Sebastian Schieferdecker
- Junior Research Group, "Secondary Metabolism of Predatory Bacteria", Leibniz Institute for Natural Product Research and Infection Biology, Hans-Knöll-Institute, Adolf-Reichwein-Str. 23, 07745 Jena (Germany), Fax: (+49) 3641-5320811
| | | | | | | | | | | |
Collapse
|
55
|
Fernández de la Ossa MÁ, Ortega-Ojeda F, García-Ruiz C. Analysis and differentiation of paper samples by capillary electrophoresis and multivariate analysis. Electrophoresis 2014; 35:3264-71. [DOI: 10.1002/elps.201300603] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 05/27/2014] [Accepted: 06/21/2014] [Indexed: 11/09/2022]
Affiliation(s)
- Ma Ángeles Fernández de la Ossa
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Multipurpose Building of Chemistry; University of Alcalá; Alcalá de Henares Spain
- University Institute of Research in Police Sciences (IUICP); University of Alcalá; Alcalá de Henares Spain
| | - Fernando Ortega-Ojeda
- University Institute of Research in Police Sciences (IUICP); University of Alcalá; Alcalá de Henares Spain
| | - Carmen García-Ruiz
- Department of Analytical Chemistry, Physical Chemistry and Chemical Engineering, Multipurpose Building of Chemistry; University of Alcalá; Alcalá de Henares Spain
- University Institute of Research in Police Sciences (IUICP); University of Alcalá; Alcalá de Henares Spain
| |
Collapse
|
56
|
AKABANE M, YAMAMOTO A, AIZAWA SI, TAGA A, KODAMA S. Simultaneous Enantioseparation of Monosaccharides Derivatized with L-Tryptophan by Reversed Phase HPLC. ANAL SCI 2014; 30:739-43. [DOI: 10.2116/analsci.30.739] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
| | - Atsushi YAMAMOTO
- Department of Biological Chemistry, College of Bioscience and Biotechnology, Chubu University
| | - Sen-ichi AIZAWA
- Graduate School of Science and Engineering, University of Toyama
| | | | | |
Collapse
|
57
|
He Y, Hou W, Thompson M, Holovics H, Hobson T, Jones MT. Size exclusion chromatography of polysaccharides with reverse phase liquid chromatography. J Chromatogr A 2014; 1323:97-103. [DOI: 10.1016/j.chroma.2013.11.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 11/16/2022]
|
58
|
Characterization of saccharide using high fluorescent 5-(((2-(carbohydrazino)methyl)thio)acetyl)-aminofluorescein tag by Capillary-HPLC-LIF and MALDI-TOF-MS. Talanta 2013; 117:229-34. [DOI: 10.1016/j.talanta.2013.09.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2013] [Revised: 09/02/2013] [Accepted: 09/03/2013] [Indexed: 11/19/2022]
|
59
|
Paszkiewicz M, Tokarska-Pietrzak E, Gołębiowski M, Kunikowska D, Stepnowski P. Plasmid- and chromosomal genes-encoded two separate O-polysaccharide chains of Salmonella Uccle (O:3,54) – Structural elucidation. J Struct Biol 2013; 184:367-74. [DOI: 10.1016/j.jsb.2013.08.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2013] [Revised: 08/09/2013] [Accepted: 08/10/2013] [Indexed: 10/26/2022]
|
60
|
Huang JH, Bakx EJ, Gruppen H, Schols HA. Characterisation of 3-aminoquinoline-derivatised isomeric oligogalacturonic acid by travelling-wave ion mobility mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:2279-85. [PMID: 24019194 DOI: 10.1002/rcm.6692] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2013] [Revised: 07/17/2013] [Accepted: 07/18/2013] [Indexed: 05/16/2023]
Abstract
RATIONALE Mass spectrometry has become a useful technique for elucidating the chemical structures of oligosaccharides. The combined use of chromatography and mass spectrometry for the separation and identification of oligosaccharides has shown much progress in recent years. However, no powerful method has yet been developed to quickly identify isomeric oligosaccharides in complex mixtures. METHODS A rapid travelling-wave ion mobility mass spectrometry (TWIMS-MS) method was developed for the identification of various isomeric oligogalacturonic acids in mixtures and determined their structures, using 3-aminoquinoline (3-AQ) as a labelling agent. RESULTS TWIMS successfully distinguished isomeric oligogalacturonic acids of various degrees of polymerisation (DPs) and levels of methyl-esterification. After derivatisation by 3-AQ, isomeric oligosaccharides of galacturonic acid, with the DP ranging from 2 to 9 and the number of methyl esters ranging from 1 to 5, were identified by 3-AQ-TWIMS-MS. The isomeric oligosaccharides with varying sites of methyl ester substitution were identified by the post-fragmentation mode of TWIMS using 3-AQ labelling to obtain simplified mass spectra. CONCLUSIONS Using the 3-AQ-TWIMS-MS method, the precise distribution of methyl esters within the pectin molecule and isomeric oligogalacturonic acids after enzyme degradation was determined. Simplified product ion mass spectra and precise analysis of the isomers were achieved by labelling 3-AQ at the reducing end of the oligosaccharides. Series of methyl-esterified galacturonic acid oligomers have predictable drift times, depending on the precise position of the methyl ester.
Collapse
Affiliation(s)
- Jie-Hong Huang
- Laboratory of Food Chemistry, Wageningen University, P.O. Box 17, 6700 AA, Wageningen, The Netherlands
| | | | | | | |
Collapse
|
61
|
Monge ME, Pérez JJ, Dwivedi P, Zhou M, McCarty NA, Stecenko AA, Fernández FM. Ion mobility and liquid chromatography/mass spectrometry strategies for exhaled breath condensate glucose quantitation in cystic fibrosis studies. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:2263-2271. [PMID: 24019192 DOI: 10.1002/rcm.6683] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2013] [Revised: 07/08/2013] [Accepted: 07/09/2013] [Indexed: 06/02/2023]
Abstract
RATIONALE Cystic fibrosis related diabetes (CFRD) is an important complication of cystic fibrosis (CF) because it causes acceleration in the decline in lung function. Monitoring concentrations of key metabolites such as glucose in airway lining fluid is necessary for improving our understanding of the biochemical mechanisms linking diabetes and CF. Targeted-metabolomic strategies for glucose quantitation in exhaled breath condensate (EBC) from healthy individuals are presented. METHODS Three different electrospray ionization mass spectrometry (ESI-MS)-based methods were developed for EBC sample interrogation and glucose quantitation without derivatization. Two methods utilized ultra-high-performance liquid chromatography (UHPLC) coupled to either time-of-flight (TOF) MS or triple quadrupole (QqQ) tandem MS (MS/MS). A third approach involved direct-infusion traveling wave ion mobility spectrometry (TWIMS) with TOF-MS detection. UHPLC/QqQ-MS/MS was used for urea quantitation as the EBC dilution marker. Matrix effects were mitigated using isotopically labeled glucose and urea as internal standards. RESULTS All the developed methods allowed glucose and urea quantitation in EBC with high accuracy and precision. The UHPLC/TOF-MS and UHPLC/QqQ-MS/MS methods provided similar analytical figures of merit. UHPLC/QqQ-MS/MS provided the highest sensitivity and the lowest limit of detection (LOD) of 1.5 nM in EBC for both glucose and urea. The TWIMS-TOF-MS-based method provided the highest sample throughput capability; however, the glucose LOD was ~3-fold higher than with the two chromatographic methods. CONCLUSIONS Mass spectrometric methods for the quantitative analysis of trace EBC glucose levels are reported and compared for the first time. The analytical figures of merit demonstrate the applicability of these methods to metabolite analysis of airway samples for CF and CFRD research.
Collapse
Affiliation(s)
- María Eugenia Monge
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA, 30332, USA
| | | | | | | | | | | | | |
Collapse
|
62
|
Huang Y, Dodds ED. Ion mobility studies of carbohydrates as group I adducts: isomer specific collisional cross section dependence on metal ion radius. Anal Chem 2013; 85:9728-35. [PMID: 24033309 DOI: 10.1021/ac402133f] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Carbohydrates play numerous critical roles in biological systems. Characterization of oligosaccharide structures is essential to a complete understanding of their functions in biological processes; nevertheless, their structural determination remains challenging in part due to isomerism. Ion mobility spectrometry provides the means to resolve gas phase ions on the basis of their shape-to-charge ratios, thus providing significant potential for separation and differentiation of carbohydrate isomers. Here, we report on the determination of collisional cross sections for four groups of isomeric carbohydrates (including five isomeric disaccharides, four isomeric trisaccharides, two isomeric pentasaccharides, and two isomeric hexasaccharides) as their group I metal ion adducts (i.e., [M + Li](+), [M + Na](+), [M + K](+), [M + Rb](+), and [M + Cs](+)). In all, 65 collisional cross sections were measured, the great majority of which have not been previously reported. As anticipated, the collisional cross sections of the carbohydrate metal ion adducts generally increase with increasing metal ion radius; however, the collisional cross sections were found to scale with the group I cation size in isomer specific manners. Such measurements are of substantial analytical value, as they illustrate how the selection of charge carrier influences carbohydrate ion mobility determinations. For example, certain pairs of isomeric carbohydrates assume unique collisional cross sections upon binding one metal ion, but not another. On the whole, these data suggest a role for the charge carrier as a probe of carbohydrate structure and thus have significant implications for the continued development and application of ion mobility spectrometry for the distinction and resolution of isomeric carbohydrates.
Collapse
Affiliation(s)
- Yuting Huang
- Department of Chemistry, University of Nebraska-Lincoln , Lincoln, Nebraska 68588-0304, United States
| | | |
Collapse
|
63
|
Lattová E, Perreault H. The usefulness of hydrazine derivatives for mass spectrometric analysis of carbohydrates. MASS SPECTROMETRY REVIEWS 2013; 32:366-385. [PMID: 23345114 DOI: 10.1002/mas.21367] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Revised: 10/12/2012] [Accepted: 10/12/2012] [Indexed: 06/01/2023]
Abstract
Over the last years, extensive studies have evaluated glycans from different biological samples and validated the importance of glycosylation as one of the most important post-translational modifications of proteins. Although a number of new methods for carbohydrate analysis have been published and there has been significant progress in their identification, the development of new approaches to study these biomolecules and understand their role in living systems are still vivid challenges that intrigue glycobiologists. In the last decade, the success in analyses of oligosaccharides has been driven mainly by the development of innovative, highly sensitive mass spectrometry techniques. For enhanced mass spectrometry detection, carbohydrate molecules are often derivatized. Besides, the type of labeling can influence the fragmentation pattern and make the structural analysis less complicated. In this regard, in 2003 we introduced the low scale, simple non-reductive tagging of glycans employing phenylhydrazine (PHN) as the derivatizing reagent. PHN-labeled glycans showed increased detection and as reported previously they can be analyzed by HPLC, ESI, or MALDI immediately after derivatization. Under tandem mass spectrometry conditions, PHN-derivatives produced useful data for the structural elucidation of oligosaccharides. This approach of analysis has helped to reveal new isomeric structures for glycans of known/unknown composition and has been successfully applied for the profiling of N-glycans obtained from serum samples and cancer cells. The efficacy of this labeling has also been evaluated for different substituted hydrazine reagents. This review summarizes all types of reducing-end labeling based on hydrazone-linkage that have been used for mass spectrometric analyses of oligosaccharides. This review is also aimed at correcting some past misconceptions or interpretations reported in the literature.
Collapse
Affiliation(s)
- Erika Lattová
- Chemistry Department, University of Manitoba, 144 Dysart Road, Winnipeg, MB, Canada R3T 2N2.
| | | |
Collapse
|
64
|
Kottler R, Mank M, Hennig R, Müller-Werner B, Stahl B, Reichl U, Rapp E. Development of a high-throughput glycoanalysis method for the characterization of oligosaccharides in human milk utilizing multiplexed capillary gel electrophoresis with laser-induced fluorescence detection. Electrophoresis 2013; 34:2323-36. [PMID: 23716415 DOI: 10.1002/elps.201300016] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2013] [Revised: 04/17/2013] [Accepted: 04/19/2013] [Indexed: 12/29/2022]
Abstract
During the last decade, enormous progress regarding knowledge about composition and properties of human milk (HM) has been made. Besides nutrition, the three macro-nutrients: proteins, lipids, and carbohydrates combine a large variety of properties and functions. Especially, complex oligosaccharides emerge as important dietary factors during early life with multiple functions. The characterization of these HM oligosaccharides (HMOS) within the total carbohydrate fraction is prerequisite to understand the relationship between milk composition and biological effects. Therefore, extended studies of large donor cohorts and thus, new high-throughput glycoanalytical methods are needed. The developed method comprises sample preparation, as well as analysis of HMOS by multiplexed CGE with LIF detection (xCGE-LIF). Via a respective database the generated "fingerprints" (normalized electropherograms) could be used for structural elucidation of HMOS. The method was tested on HM samples from five different donors, partly sampled as a series of lactation time points. HMOS could be easily identified and quantified. Consequently, secretor and Lewis status of the donors could be determined, milk typing could be performed and quantitative changes could be monitored along lactation time course. The developed xCGE-LIF based "real" high-throughput HMOS analysis method enables qualitative and quantitative high-performance profiling of the total carbohydrate fraction composition of large sets of samples.
Collapse
Affiliation(s)
- Robert Kottler
- Max Planck Institute for Dynamics of Complex Technical Systems, Magdeburg, Germany
| | | | | | | | | | | | | |
Collapse
|
65
|
Determination of Aldoses, Deoxy-aldoses and Uronic Acids Content in a Pectin-Rich Extract by RP-HPLC-FLD after p-AMBA Derivatization. Chromatographia 2013. [DOI: 10.1007/s10337-013-2510-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
66
|
Gao J, Thomas DA, Sohn CH, Beauchamp JL. Biomimetic Reagents for the Selective Free Radical and Acid–Base Chemistry of Glycans: Application to Glycan Structure Determination by Mass Spectrometry. J Am Chem Soc 2013; 135:10684-92. [DOI: 10.1021/ja402810t] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Jinshan Gao
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - Daniel A. Thomas
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - Chang Ho Sohn
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| | - J. L. Beauchamp
- Arthur Amos Noyes Laboratory of
Chemical Physics, California Institute of Technology, Pasadena, California
91125, United States
| |
Collapse
|
67
|
Critical investigation of the substituent distribution in the polymer chains of hydroxypropyl methylcelluloses by (LC-)ESI-MS. Anal Bioanal Chem 2013; 405:9021-32. [PMID: 23774831 DOI: 10.1007/s00216-013-7065-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2013] [Revised: 05/10/2013] [Accepted: 05/13/2013] [Indexed: 10/26/2022]
Abstract
Three hydroxypropyl methylcellulose samples (HPMC1-3, DS(Me) = 1.45, 1.29, and 1.36; MS(HP) = 0.28, 0.46, and 0.84) were analyzed with respect to their methyl and hydroxypropyl substitution pattern in the polymer chains. Ionization yield of HPMC oligomers in electrospray ionization ion trap mass spectrometry (ESI-IT-MS) is strongly influenced by the hydroxypropyl pattern. Therefore, a sample derivatization procedure, as well as suitable measurement conditions that enable relative quantification were elaborated. Analysis was performed by negative ESI-IT-MS after per(deutero)methylation, partial depolymerization, and reductive amination with m-aminobenzoic acid. Measurement parameters like solvent, trap drive, and voltages of the ion transportation unit were studied with regard to the suitability for quantitative evaluation. Using direct infusion of the samples, strong influence of trap drive and octopole settings was observed. Optimized measurement conditions were used for the determination of the HP pattern of the permethylated samples by direct infusion. The methyl pattern was determined from the perdeuteromethylated samples by high-performance liquid chromatography-electrospray tandem mass spectrometry. For HPMC1, substituents were both found to fit the random distribution model. The other two samples showed pronounced heterogeneity which could be interpreted in more detail by extracting methyl subpatterns depending on the number of HP groups.
Collapse
|
68
|
Han J, Tschernutter V, Yang J, Eckle T, Borchers CH. Analysis of selected sugars and sugar phosphates in mouse heart tissue by reductive amination and liquid chromatography-electrospray ionization mass spectrometry. Anal Chem 2013; 85:5965-73. [PMID: 23682691 PMCID: PMC3989532 DOI: 10.1021/ac400769g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Sensitive and reliable analysis of sugars and sugar phosphates in tissues and cells is essential for many biological and cell engineering studies. However, the successful analysis of these endogenous compounds in biological samples by liquid chromatography/electrospray ionization mass spectrometry (LC/ESI-MS) is often difficult because of their poor chromatographic retention properties in reversed-phase LC, the complex biological matrices, and the ionization suppression in ESI. This situation is further complicated by the existence of their multiple structural isomers in vivo. This work describes the combination of reductive amination using 3-amino-9-ethylcarbazole, with a new LC approach using a pentafluorophenyl core-shell ultrahigh performance (UP) LC column and methylphosphonic acid as an efficient tail-sweeping reagent for improved chromatographic separation. This new method was used for selected detection and accurate quantitation of the major free and phosphorylated reducing sugars in mouse heart tissue. Among the detected compounds, accurate quantitation of glyceraldehyde, ribose, glucose, glycerylaldehyde-3-phosphate, ribose-5-phosphate, glucose-6-phosphate, and mannose-6-phosphate was achieved by UPLC/multiple-reaction monitoring (MRM)-MS, with analytical accuracies ranging from 87.4% to 109.4% and CVs of ≤8.5% (n = 6). To demonstrate isotope-resolved metabolic profiling, we used UPLC/quadrupole time-of-flight (QTOF)-MS to analyze the isotope distribution patterns of C3 to C6 free and phosphorylated reducing sugars in heart tissues from (13)C-labeled wild type and knockout mice. In conclusion, the preanalytical derivatization-LC/ESI-MS method has resulted in selective determination of free and phosphorylated reducing sugars without the interferences from their nonreducing structural isomers in mouse heart tissue, with analytical sensitivities in the femtomole to low picomole range.
Collapse
Affiliation(s)
- Jun Han
- University of Victoria - Genome BC Proteomics Centre, University of Victoria, Vancouver Island Technology Park, 3101-4464 Markham Street, Victoria, British Columbia V8Z 7X8, Canada
| | - Vera Tschernutter
- University of Victoria - Genome BC Proteomics Centre, University of Victoria, Vancouver Island Technology Park, 3101-4464 Markham Street, Victoria, British Columbia V8Z 7X8, Canada
| | - Juncong Yang
- University of Victoria - Genome BC Proteomics Centre, University of Victoria, Vancouver Island Technology Park, 3101-4464 Markham Street, Victoria, British Columbia V8Z 7X8, Canada
| | - Tobias Eckle
- Mucosal Inflammation Program, Department of Anesthesiology, University of Colorado, Denver, Colorado, United States
| | - Christoph H. Borchers
- University of Victoria - Genome BC Proteomics Centre, University of Victoria, Vancouver Island Technology Park, 3101-4464 Markham Street, Victoria, British Columbia V8Z 7X8, Canada
- Department of Biochemistry and Microbiology, University of Victoria, Petch Building Room 207, 3800 Finnerty Road, Victoria, British Columbia V8P 5C2, Canada
| |
Collapse
|
69
|
Analysis of monosaccharides and oligosaccharides in the pulp and paper industry by use of capillary zone electrophoresis: a review. Anal Bioanal Chem 2013; 405:5773-84. [PMID: 23715674 DOI: 10.1007/s00216-013-7031-x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 03/14/2013] [Accepted: 04/26/2013] [Indexed: 10/26/2022]
Abstract
Carbohydrate analysis is an important source of the information required for understanding and control of pulp and paper processes. The behavior of cellulose and hemicelluloses in the process, carbohydrate-lignin interactions, and the enzymatic treatment of fibers are examples of situations for which reliable, fast, qualitative, and quantitative methods are required. New uses of lignocellulosic material have further increased the need for carbohydrate analysis. This review collates and summarizes the most important findings and approaches in the analysis of wood-based carbohydrates by use of capillary zone electrophoresis and provides an analysis of the effect of different conditions on the separation, showing the advantages and limitations of the methods used. It provides guidelines for achieving higher quality and improved separation efficiency in carbohydrate analysis.
Collapse
|
70
|
Rakete S, Glomb MA. A novel approach for the quantitation of carbohydrates in mash, wort, and beer with RP-HPLC using 1-naphthylamine for precolumn derivatization. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:3828-3833. [PMID: 23578308 DOI: 10.1021/jf400463r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
A novel universal method for the determination of reducing mono-, di-, and oligosaccharides in complex matrices on RP-HPLC using 1-naphthylamine for precolumn derivatization with sodium cyanoborhydride was established to study changes in the carbohydrate profile during beer brewing. Fluorescence and mass spectrometric detection enabled very sensitive analyses of beer-relevant carbohydrates. Mass spectrometry additionally allowed the identification of the molecular weight and thereby the degree of polymerization of unknown carbohydrates. Thus, carbohydrates with up to 16 glucose units were detected. Comparison demonstrated that the novel method was superior to fluorophore-assisted carbohydrate electrophoresis (FACE). The results proved the HPLC method clearly to be more powerful in regard to sensitivity and resolution. Analogous to FACE, this method was designated fluorophore-assisted carbohydrate HPLC (FAC-HPLC).
Collapse
Affiliation(s)
- Stefan Rakete
- Institute of Chemistry, Food Chemistry, Martin-Luther-University Halle-Wittenberg , Kurt-Mothes-Straße 2, 06120 Halle/Saale, Germany
| | | |
Collapse
|
71
|
Wu CL, Wang CC, Lai YH, Lee H, Lin JD, Lee YT, Wang YS. Selective Enhancement of Carbohydrate Ion Abundances by Diamond Nanoparticles for Mass Spectrometric Analysis. Anal Chem 2013; 85:3836-41. [DOI: 10.1021/ac3036469] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chieh-Lin Wu
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Chia-Chen Wang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
- Institute of Biochemistry and
Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan,
ROC
| | - Yin-Hung Lai
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Hsun Lee
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Jia-Der Lin
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Yuan Tseh Lee
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
| | - Yi-Sheng Wang
- Genomics Research Center, Academia Sinica, Taipei 115, Taiwan, ROC
- Institute of Biochemistry and
Molecular Biology, National Yang-Ming University, Taipei 112, Taiwan,
ROC
| |
Collapse
|
72
|
Przybylski C, Bonnet V. Discrimination of cyclic and linear oligosaccharides by tandem mass spectrometry using collision-induced dissociation (CID), pulsed-Q-dissociation (PQD) and the higher-energy C-trap dissociation modes. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2013; 27:75-87. [PMID: 23239319 DOI: 10.1002/rcm.6422] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 09/02/2012] [Accepted: 09/28/2012] [Indexed: 06/01/2023]
Abstract
RATIONALE Carbohydrates have essential functions in living organisms and cells, but, due to the presence of numerous linkage combinations, substituent sites and possible conformations, they are the class of biomolecules which exhibits the huge structural diversity found in nature. Thereby, due to such diversity and poor ionization, their structural deciphering by mass spectrometry is still a very challenging task. METHODS Here, we studied a series of linear and cyclic neutral oligosaccharides using electrospray with collision-induced dissociation (CID), pulsed-Q-dissociation (PQD) and the higher-energy C-trap dissociation (HCD) feature of a linear ion trap Orbitrap hybrid mass spectrometer (LTQ-Orbitrap). The collision energy necessary to obtain 50% fragmentation (CE(50) values) in CID, PQD and HCD was used to correlate both size and structures. RESULTS The default settings for activation time and/or activation Q are the most appropriate, except for HCD, where 100 ms instead of 30 ms gave more intense fragment ions. PQD exhibits a 2-8-fold lower sensitivity than CID. HCD provides signals closer or slightly superior by 1.5-fold than PQD, and offers a more balanced ion distribution through the spectrum. Furthermore, HCD offers the possibility to make fine adjustments of the energy via the eV scale to further increase the yield of low-mass fragments. CONCLUSIONS The complementarity of CID, PQD and HCD was clearly demonstrated by obtaining structural information on hexa-, hepta- and octasaccharides. Together, these results clearly indicate the usefulness of the CID/HCD pair for further structural deciphering, and analysis of more complex structures such as multi-antennary carbohydrates or glycoconjuguates alone or in mixture.
Collapse
Affiliation(s)
- Cédric Przybylski
- Université d'Evry-Val-d'Essonne, Laboratoire Analyse et Modélisation pour la Biologie et l'Environnement, CNRS UMR 8587, F-91025, Evry, France.
| | | |
Collapse
|
73
|
Abstract
Capillary electrophoresis is a common technique used for glycosaminoglycan-derived disaccharide analysis because of its high resolving power, high separation efficiency, high sensitivity, short analysis time, and straightforward operation. CE coupled to laser-induced fluorescence (LIF) detection shows an approximately 100 times higher sensitivity than traditional UV detection at 232 nm. 2-Aminoacridone (AMAC) is a widely used fluorophore for labeling unsaturated disaccharides by deductive amination, which is one of the most important method of derivatization of disaccharides for CE-LIF detection. Outlined in this chapter is a protocol of analyzing glycosaminoglycan-derived disaccharides by CE-LIF with AMAC derivatization.
Collapse
|
74
|
Walker SH, Carlisle BC, Muddiman DC. Systematic comparison of reverse phase and hydrophilic interaction liquid chromatography platforms for the analysis of N-linked glycans. Anal Chem 2012; 84:8198-206. [PMID: 22954204 PMCID: PMC3689152 DOI: 10.1021/ac3012494] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Due to the hydrophilic nature of glycans, reverse phase chromatography has not been widely used as a glycomic separation technique coupled to mass spectrometry. Other approaches such as hydrophilic interaction chromatography and porous graphitized carbon chromatography are often employed, though these strategies frequently suffer from decreased chromatographic resolution, long equilibration times, indefinite retention, and column bleed. Herein, it is shown that, through an efficient hydrazone formation derivatization of N-linked glycans (~4 h of additional sample preparation time which is carried out in parallel), numerous experimental and practical advantages are gained when analyzing the glycans by online reverse phase chromatography. These benefits include an increased number of glycans detected, increased peak capacity of the separation, and the ability to analyze glycans on the identical liquid chromatography-mass spectrometry platform commonly used for proteomic analyses. The data presented show that separation of derivatized N-linked glycans by reverse phase chromatography significantly out-performs traditional separation of native or derivatized glycans by hydrophilic interaction chromatography. Furthermore, the movement to a more ubiquitous separation technique will afford numerous research groups the opportunity to analyze both proteomic and glycomic samples on the same platform with minimal time and physical change between experiments, increasing the efficiency of "multiomic" biological approaches.
Collapse
Affiliation(s)
- S. Hunter Walker
- W.M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695
| | - Brandon C. Carlisle
- W.M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695
| | - David C. Muddiman
- W.M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695
| |
Collapse
|
75
|
Ozohanics O, Turiák L, Puerta A, Vékey K, Drahos L. High-performance liquid chromatography coupled to mass spectrometry methodology for analyzing site-specific N-glycosylation patterns. J Chromatogr A 2012; 1259:200-12. [DOI: 10.1016/j.chroma.2012.05.031] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2012] [Revised: 05/07/2012] [Accepted: 05/09/2012] [Indexed: 10/28/2022]
|
76
|
de la Ossa MÁF, Torre M, García-Ruiz C. Determination of nitrocellulose by capillary electrophoresis with laser-induced fluorescence detection. Anal Chim Acta 2012; 745:149-55. [DOI: 10.1016/j.aca.2012.07.032] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Revised: 07/14/2012] [Accepted: 07/20/2012] [Indexed: 11/29/2022]
|
77
|
Lavanant H, Loutelier-Bourhis C. Use of procaine and procainamide as derivatizing co-matrices for the analysis of oligosaccharides by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:1311-1319. [PMID: 22555924 DOI: 10.1002/rcm.6223] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
RATIONALE Analysis of oligosaccharides by matrix-assisted laser desorption/ionization (MALDI) mass spectrometry often yields only alkali metal cation adducts, which results in lower fragmentation yields and difficulty to retrieve sequence information. Derivatization by reductive amination may be used to promote Y-type glycosidic cleavages. However, this involves time-consuming preparations and purifications with sample loss. Here, procaine and procainamide were used directly as co-matrices with 2,5-dihydroxybenzoic acid (DHB). METHODS Acidified 10 g/L procaine hydrochloride or procainamide hydrochloride solutions in water/acetonitrile were added to the oligosaccharide solution one minute before preparing our MALDI targets using DHB with the dried-droplet method. This simple protocol resulted in deposits of very fine homogeneous crystals. RESULTS Positive ion mass spectra, easily acquired in an automated mode, presented a high percentage of oligosaccharides derivatized as Schiff base or glycosylamine notably detected as protonated molecules [M + H](+). The high abundance of procaine or procainamide on the target did not impede the ionization process, improved the signal-to-noise ratio and eliminated the need to search for 'sweet spots'. Fragmentation of the protonated precursor ions of the derivatives largely favored Y-type glycosidic cleavages. CONCLUSIONS This easy and fast sample preparation, involving low toxicity and easily accessible chemicals, allowed the selection of protonated molecules as precursor ions for post-source decay analyses. This opened the possibility of simplifying sequence retrieval in routine oligosaccharide analyses.
Collapse
Affiliation(s)
- Hélène Lavanant
- Université de Rouen, UMR CNRS 6014, COBRA, FR3038, rue Tesnière, 76821 Mont St Aignan, Cedex, France.
| | | |
Collapse
|
78
|
Microanalysis of oligosaccharide HS203 in beagle dog plasma by postcolumn fluorescence derivatization method. Carbohydr Polym 2012; 89:661-6. [DOI: 10.1016/j.carbpol.2012.03.069] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Accepted: 03/23/2012] [Indexed: 12/22/2022]
|
79
|
High-Performance Anion-Exchange Chromatography Coupled with Pulsed Electrochemical Detection as a Powerful Tool to Evaluate Carbohydrates of Food Interest: Principles and Applications. ACTA ACUST UNITED AC 2012. [DOI: 10.1155/2012/487564] [Citation(s) in RCA: 102] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Specific HPLC approaches are essential for carbohydrate characterization in food products. Carbohydrates are weak acids with pKa values in the range 12–14 and, consequently, at high pH can be transformed into oxyanions, and can be readily separated using highly efficient anion-exchange columns. Electrochemical detection in HPLC has been proven to be a powerful analytical technique for the determination of compounds containing electroactive groups; pulsed amperometric detection of carbohydrates is favourably performed by taking advantage of their electrocatalytic oxidation mechanism at a gold working electrode in a basic media. High-performance Anion Exchange Chromatography (HPAEC) at high pH coupled with pulsed electrochemical detection (PED) is one of the most useful techniques for carbohydrate determination either for routine monitoring or research application. This technique has been of a great impact on the analysis of oligo- and polysaccharides. The compatibility of electrochemical detection with gradient elution, coupled with the high selectivity of the anion-exchange stationary phases, allows mixtures of simple sugars, oligo- and polysaccharides to be separated with high resolution in a single run. A few reviews have been written on HPAEC-PED of carbohydrates of food interest in the last years. In this paper the recent developments in this field are examined.
Collapse
|
80
|
Johannesen SA, Beeren SR, Blank D, Yang BY, Geyer R, Hindsgaul O. Glycan analysis via derivatization with a fluorogenic pyrylium dye. Carbohydr Res 2012; 352:94-100. [DOI: 10.1016/j.carres.2012.02.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Revised: 02/13/2012] [Accepted: 02/15/2012] [Indexed: 10/28/2022]
|
81
|
Liang CW, Chang PJ, Lin YJ, Lee YT, Ni CK. High ion yields of carbohydrates from frozen solution by UV-MALDI. Anal Chem 2012; 84:3493-9. [PMID: 22443117 DOI: 10.1021/ac3000896] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
An aqueous acetonitrile solution containing oligosaccharides (maltopentaose and polysaccharides) and a matrix (2,5-dihydroxybenzoic acid) was frozen at 100 K for mass analysis using ultraviolet matrix-assisted laser desorption/ionization (UV-MALDI). Compared with conventional UV-MALDI (i.e., using a dry analyte/matrix mixture), a frozen solution generates more oligosaccharide ions and less fragments from postsource decay. Furthermore, the ion signal is long-lasting, and the analyte distribution features enhanced homogeneity. The ion generation efficiency for this procedure is 20-30 times greater than that for a conventional dried mixture. Interestingly, the percentages for maltopentaose fragmentation from postsource decay for the frozen samples are close to zero (<2%), as compared with the 17% and 40% values found for dried samples at low and high laser fluences, respectively. Comparisons with other UV matrixes (α-cyano-4-hydroxycinnamic acid and sinapinic acid) and ionic liquids (2,5-dihydroxybenzoic acid + pyridine and α-cyano-4-hydroxycinnamic acid + butylamine) were investigated, and possible mechanisms are discussed.
Collapse
Affiliation(s)
- Chi-Wei Liang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, Taiwan
| | | | | | | | | |
Collapse
|
82
|
Development and validation of an HPLC-DAD method for quantification of bornesitol in extracts from Hancornia speciosa leaves after derivatization with p-toluenesulfonyl chloride. J Chromatogr B Analyt Technol Biomed Life Sci 2012; 887-888:133-7. [DOI: 10.1016/j.jchromb.2012.01.009] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Revised: 01/09/2012] [Accepted: 01/14/2012] [Indexed: 11/19/2022]
|
83
|
Domann P, Spencer DIR, Harvey DJ. Production and fragmentation of negative ions from neutral N-linked carbohydrates ionized by matrix-assisted laser desorption/ionization. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2012; 26:469-479. [PMID: 22279023 DOI: 10.1002/rcm.5322] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Although negative ion fragmentation mass spectra of neutral N-linked carbohydrates (those attached to Asn in glycoproteins) provide much more structural information than spectra recorded in positive ion mode, neutral carbohydrates are reluctant to form negative ions by matrix-assisted laser desorption/ionization (MALDI) unless ionized from specific matrices such as nor-harmane or adducted with anions such as chloride. This paper reports the results of experiments to optimize negative ion formation from adducts of N-linked glycans with respect to ion abundance and fragment ion production. The best results were obtained with 2,4,6-trihydroxyacetophenone (THAP) as the matrix with added ammonium nitrate as the salt providing the anion. This approach is demonstrated to be applicable for a wide range of N-linked glycan structures. Phosphate adducts, analogous to those that are usually encountered in electrospray spectra from N-glycans released by protein N-glycosidase F, were produced by addition of ammonium phosphate to the matrix but in relatively low yield allowing competitive ionization of endogenous anionic compounds leading to complex spectra. Fragmentation of the nitrate adducts, which were formed in higher yield, generally paralleled that seen by collision-induced dissociation following ionization by electrospray, with the first stage of the dissociation being the elimination of the nitrate with a proton from one of the hydroxyl groups of the sugar. The spectra of the resulting [M-H](-) species displayed very specific fragment ions, mainly cross-ring and C-type glycosidic cleavage products, that revealed more structural (linkage and branching) information of the compounds than the mainly glycosidic cleavage products that dominated the positive ion spectra.
Collapse
Affiliation(s)
- Paula Domann
- LGC Ltd., Queens Road, Teddington, Middlesex, TW11 0LY, UK
| | | | | |
Collapse
|
84
|
Simultaneous determination of substituent patterns in partially acid hydrolyzed O-Me/O-Me-d3-cellulose and quantification of the obtained oligomers by HPLC-ESI-MS. Carbohydr Res 2012; 348:55-63. [PMID: 22172659 DOI: 10.1016/j.carres.2011.11.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2011] [Accepted: 11/14/2011] [Indexed: 11/21/2022]
|
85
|
Enjalbert Q, Racaud A, Lemoine J, Redon S, Ayhan MM, Andraud C, Chambert S, Bretonnière Y, Loison C, Antoine R, Dugourd P. Optical Properties of a Visible Push–Pull Chromophore Covalently Bound to Carbohydrates: Solution and Gas-Phase Spectroscopy Combined to Theoretical Investigations. J Phys Chem B 2012; 116:841-51. [DOI: 10.1021/jp2099015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Quentin Enjalbert
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR5579, CNRS, Université Lyon 1, France
- Laboratoire de Sciences Analytiques, UMR5180, CNRS, Université Lyon 1, France
| | - Amandine Racaud
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR5579, CNRS, Université Lyon 1, France
- Laboratoire de Sciences Analytiques, UMR5180, CNRS, Université Lyon 1, France
| | - Jérôme Lemoine
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Sciences Analytiques, UMR5180, CNRS, Université Lyon 1, France
| | - Sébastien Redon
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Chimie Organique et Bioorganique, INSA de Lyon, Lyon, France
- Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, UMR5246, CNRS, Université Lyon 1, INSA de Lyon, CPE-Lyon, Lyon, France
| | - Mehmet Menaf Ayhan
- Université de Lyon, F-69622, Lyon, France
- Laboratoire de Chimie de l’ENS Lyon, UMR5182, CNRS, ENS Lyon, 46 allée d’Italie, F-69364 Lyon, France
| | - Chantal Andraud
- Université de Lyon, F-69622, Lyon, France
- Laboratoire de Chimie de l’ENS Lyon, UMR5182, CNRS, ENS Lyon, 46 allée d’Italie, F-69364 Lyon, France
| | - Stéphane Chambert
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Chimie Organique et Bioorganique, INSA de Lyon, Lyon, France
- Institut de Chimie et de Biochimie Moléculaires et Supramoléculaires, UMR5246, CNRS, Université Lyon 1, INSA de Lyon, CPE-Lyon, Lyon, France
| | - Yann Bretonnière
- Université de Lyon, F-69622, Lyon, France
- Laboratoire de Chimie de l’ENS Lyon, UMR5182, CNRS, ENS Lyon, 46 allée d’Italie, F-69364 Lyon, France
| | - Claire Loison
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR5579, CNRS, Université Lyon 1, France
| | - Rodolphe Antoine
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR5579, CNRS, Université Lyon 1, France
| | - Philippe Dugourd
- Université de Lyon, F-69622, Lyon, France
- Université Lyon 1, 43, Bld du 11 Novembre 1918, F-69622 Villeurbanne, France
- Laboratoire de Spectrométrie Ionique et Moléculaire, UMR5579, CNRS, Université Lyon 1, France
| |
Collapse
|
86
|
Abstract
LC with atmospheric pressure ionization MS is essential to a large number of quantitative bioanalyses for a variety of compounds, especially nonvolatile or highly polar compounds. However, in many instances, weak ionization, poor LC retention and instability of certain analytes hinder the development of the LC–MS/MS method. Chemical derivatization has been used for different classes of analytes to improve their ionization efficiency, chromatographic separation and chemical stability. This work presents an overview of chemical derivatization methods that have been applied to the quantitative LC–MS/MS analyses of nine classes of molecules, including aldehydes, amino acids, bisphosphonate drugs, carbohydrates, carboxylic acids, nucleosides and their associated analogs, steroids, thiol-containing compounds and vitamin D metabolites, in biological matrices.
Collapse
|
87
|
Zhou W, Håkansson K. Structural Characterization of Carbohydrates by Fourier Transform Tandem Mass Spectrometry. CURR PROTEOMICS 2011; 8:297-308. [PMID: 22389641 PMCID: PMC3289259 DOI: 10.2174/157016411798220826] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Fourier transform tandem mass spectrometry (MS/MS) provides high mass accuracy, high sensitivity, and analytical versatility and has therefore emerged as an indispensable tool for structural elucidation of biomolecules. Glycosylation is one of the most common posttranslational modifications, occurring in ~50% of proteins. However, due to the structural diversity of carbohydrates, arising from non-template driven biosynthesis, achievement of detailed structural insight is highly challenging. This review briefly discusses carbohydrate sample preparation and ionization methods, and highlights recent developments in alternative high-resolution MS/MS strategies, including infrared multiphoton dissociation (IRMPD), electron capture dissociation (ECD), and electron detachment dissociation (EDD), for carbohydrates with a focus on glycans and proteoglycans from mammalian glycoproteins.
Collapse
Affiliation(s)
- Wen Zhou
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| | - Kristina Håkansson
- Department of Chemistry, University of Michigan, Ann Arbor, Michigan, USA
| |
Collapse
|
88
|
Zhou W, Håkansson K. Electron detachment dissociation of fluorescently labeled sialylated oligosaccharides. Electrophoresis 2011; 32:3526-35. [PMID: 22120881 DOI: 10.1002/elps.201100327] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2011] [Revised: 08/11/2011] [Accepted: 09/05/2011] [Indexed: 01/07/2023]
Abstract
We explored the application of electron detachment dissociation (EDD) and infrared multiphoton dissociation (IRMPD) tandem mass spectrometry to fluorescently labeled sialylated oligosaccharides. Standard sialylated oligosaccharides and a sialylated N-linked glycan released from human transferrin were investigated. EDD yielded extensive glycosidic cleavages and cross-ring cleavages in all cases studied, consistently providing complementary structural information compared with infrared multiphoton dissociation. Neutral losses and satellite ions such as C-2H ions were also observed following EDD. In addition, we examined the influence of different fluorescent labels. The acidic label 2-aminobenzoic acid (2-AA) enhanced signal abundance in negative-ion mode. However, few cross-ring fragments were observed for 2-AA-labeled oligosaccharides. The neutral label 2-aminobenzamide (2-AB) resulted in more cross-ring cleavages compared with 2-AA-labeled species, but not as extensive fragmentation as for native oligosaccharides, likely resulting from altered negative charge locations from introduction of the fluorescent tag.
Collapse
Affiliation(s)
- Wen Zhou
- Department of Chemistry, University of Michigan, Ann Arbor, MI 48109-1055, USA
| | | |
Collapse
|
89
|
Min JZ, Suzuki Y, Tomiyasu Y, Jin D, Higashi T, Lee YI, Toyo'oka T. Development of novel active acceptors possessing a positively charged structure for the transglycosylation reaction with Endo-M and their application to oligosaccharide analysis. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2011; 25:2911-2922. [PMID: 21913270 DOI: 10.1002/rcm.5190] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
With Boc-Asn-GlcNAc as a basic structure, four permanently positively charged kinds of new acceptors (GP-Boc-Asn-GlcNAc, GT-Boc-Asn-GlcNAc, HMP-Boc-Asn-GlcNAc, MPDPZ-Boc-Asn-GlcNAc) and five kinds of similar structure acceptors (2-PA-Boc-Asn-GlcNAc, 3-PA-Boc-Asn-GlcNAc, 4-PA-Boc-Asn-GlcNAc, HP-Boc-Asn-GlcNAc, PDPZ-Boc-Asn-GlcNAc) were synthesized as acceptors for the resolution of oligosaccharides in glycopeptides. The synthesized acceptors enzymatically reacted with Disialo-Asn (donor) in the presence of Endo-M. The reaction yields of each transglycosylation product were not obvious, because we do not have all the authentic Disialo-Asn-Boc-acceptors. Therefore, we used the peak area of the transglycosylation product detected by mass spectrometry and evaluated the utility of each acceptor. Among the Boc-Asn-GlcNAc acceptors, the positively charged MPDPZ derivative peak area was the highest, MPDPZ-Boc-Asn-GlcNAc with a positively charged structure showed about a 2.2 times greater sensitivity of the transglycosylation product compared to the conventional fluorescence acceptor DBD-PZ-Boc-Asn-GlcNAc. As a result, the MPDPZ-Boc-Asn-GlcNAc acceptor was suitable for the transglycosylation reaction with Endo-M. The development of a qualitative determination method for the N-linked oligosaccharides in glycoproteins was attempted by combination of the transglycosylation reaction and semi-micro high-performance liquid chromatography/electrospray ionization quadrupole time-of-flight tandem mass spectrometry (HPLC/ESI-QTOF-MS/MS). The asparaginyl-oligosaccharides in glycoproteins, liberated by treatment with Pronase E, were separated, purified and labeled with positively charged MPDPZ. The resulting derivatives were separated by a semi-micro HPLC system. The eluted N-linked oligosaccharide derivatives were then introduced into a QTOF-MS instrument and sensitively detected in the ESI(+) mode. Various fragment ions based on the carbohydrate units appeared in the MS/MS spectra. Among the peaks, m/z 782.37 corresponding to MPDPZ-Boc-Asn-GlcNAc is the most important one for identifying the asparaginyl-oligosaccharides. Disialo-Asn-Boc-MPDPZ was easily identified by the selected-ion chromatogram at m/z 782.37 by MS/MS detection. Therefore, the identification of N-linked oligosaccharides in glycoproteins seems to be possible by the proposed semi-micro HPLC separations followed by the QTOF-MS/MS detection. Furthermore, several oligosaccharides in ovalbumin and ribonuclease B were successfully identified by the proposed procedure.
Collapse
Affiliation(s)
- Jun Zhe Min
- Laboratory of Analytical and Bio-Analytical Chemistry, School of Pharmaceutical Sciences, and Global COE Program, University of Shizuoka, 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan.
| | | | | | | | | | | | | |
Collapse
|
90
|
D'Arcy-Moskwa E, Weston L, Noble GN, Raidal SL. Determination of sucrose in equine serum using liquid chromatography-mass spectrometry (LC/MS). J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:3668-71. [PMID: 22024392 DOI: 10.1016/j.jchromb.2011.09.049] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Revised: 09/24/2011] [Accepted: 09/26/2011] [Indexed: 11/17/2022]
Abstract
Mucosal integrity may be objectively assessed by determination of the absorption of exogenous substances such as sucrose. Gas chromatography-mass spectrometry (GC/MS) and liquid chromatography-mass spectrometry (LC/MS) have been reported for the accurate quantification of low concentrations of sucrose in serum. LC/MS offered the advantage of high sensitivity and mass selectivity without the need for extensive sample derivatization required for GC/MS methods. However, the high polarity and non-volatile nature of the sucrose molecule renders LC/MS techniques challenging. Previously published reports lacked sufficient detail to permit replication of methodology. Problems encountered with existing protocols included poor peak resolution and weak fragmentation of the parent molecule. This communication describes a LC/MS protocol developed to provide improved resolution and product detection.
Collapse
Affiliation(s)
- E D'Arcy-Moskwa
- School of Animal and Veterinary Sciences, Charles Sturt University, Wagga Wagga, NSW, Australia
| | | | | | | |
Collapse
|
91
|
Wang C, Fan W, Zhang P, Wang Z, Huang L. One-pot nonreductive O-glycan release and labeling with 1-phenyl-3-methyl-5-pyrazolone followed by ESI-MS analysis. Proteomics 2011; 11:4229-42. [PMID: 21956845 DOI: 10.1002/pmic.201000677] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2010] [Revised: 07/21/2011] [Accepted: 08/18/2011] [Indexed: 11/06/2022]
Abstract
A novel one-pot procedure for the nonreductive release of O-linked glycans from glycoproteins and the simultaneous derivatization of released glycans with 1-phenyl-3-methyl-5-pyrazolone (PMP) is described. Unlike the traditional reductive β-elimination, which produces alditols, this new method employs PMP/ammonia aqueous solution as the reaction medium. The O-glycans are released from glycoproteins and derivatized with PMP nonreductively, specifically, and quantitatively. Samples can be easily purified from ammonia, excess PMP, and peptide residues by evaporation, chloroform extraction, and solid-phase extraction (SPE) column fractionation for HPLC, CE, or MS analysis. The procedure has been elaborated with two purified glycoproteins, porcine stomach mucin and bovine fetuin, and successfully applied to O-glycan profiling of a challenging biological specimen, healthy human plasma. This new procedure has shown methodological significance in O-glycan analysis.
Collapse
Affiliation(s)
- Chengjian Wang
- Educational Ministry Key Laboratory of Resource Biology and Biotechnology in Western China, Life Science College, Northwest University, Xi'an, PR China
| | | | | | | | | |
Collapse
|
92
|
Zhang Y, Zhang P, Wang Z, Huang L. AN INNOVATIVE DERIVATIZATION METHOD FOR SIMULTANEOUS DETERMINATION OF URONIC ACIDS AND NEUTRAL AND AMINO SUGARS IN COEXISTING SAMPLES BY HPLC-ESI-MS/MS2. J LIQ CHROMATOGR R T 2011. [DOI: 10.1080/10826076.2011.579216] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Ying Zhang
- a Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Ping Zhang
- b Chemistry and Chemical Engineering School , Xianyang Normal University , Xianyang, China
| | - Zhongfu Wang
- a Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| | - Linjuan Huang
- a Key Laboratory of Resource Biology and Biotechnology in Western China, Ministry of Education, College of Life Science, Northwest University , Xi'an, China
| |
Collapse
|
93
|
Prifti E, Goetz S, Nepogodiev SA, Field RA. Synthesis of fluorescently labelled rhamnosides: probes for the evaluation of rhamnogalacturonan II biosynthetic enzymes. Carbohydr Res 2011; 346:1617-21. [DOI: 10.1016/j.carres.2011.03.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2011] [Revised: 03/25/2011] [Accepted: 03/29/2011] [Indexed: 11/26/2022]
|
94
|
Walker SH, Lilley LM, Enamorado MF, Comins DL, Muddiman DC. Hydrophobic derivatization of N-linked glycans for increased ion abundance in electrospray ionization mass spectrometry. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2011; 22:1309-17. [PMID: 21953184 PMCID: PMC3700344 DOI: 10.1007/s13361-011-0140-x] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/03/2010] [Revised: 02/08/2011] [Accepted: 03/15/2011] [Indexed: 05/12/2023]
Abstract
A library of neutral, hydrophobic reagents was synthesized for use as derivatizing agents in order to increase the ion abundance of N-linked glycans in electrospray ionization mass spectrometry (ESI MS). The glycans are derivatized via hydrazone formation and are shown to increase the ion abundance of a glycan standard more than 4-fold. Additionally, the data show that the systematic addition of hydrophobic surface area to the reagent increases the glycan ion abundance, a property that can be further exploited in the analysis of glycans. The results of this study will direct the future synthesis of hydrophobic reagents for glycan analysis using the correlation between hydrophobicity and theoretical non-polar surface area calculation to facilitate the development of an optimum tag for glycan derivatization. The compatibility and advantages of this method are demonstrated by cleaving and derivatizing N-linked glycans from human plasma proteins. The ESI-MS signal for the tagged glycans are shown to be significantly more abundant, and the detection of negatively charged sialylated glycans is enhanced.
Collapse
Affiliation(s)
- S. Hunter Walker
- W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Laura M. Lilley
- Department of Chemistry, Warren Wilson College, Asheville, North Carolina 28815, USA
| | - Monica F. Enamorado
- W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - Daniel L. Comins
- W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| | - David C. Muddiman
- W. M. Keck FT-ICR Mass Spectrometry Laboratory, Department of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, USA
| |
Collapse
|
95
|
Chen Q, Wei W, Lin JM. Homogeneous detection of concanavalin A using pyrene-conjugated maltose assembled graphene based on fluorescence resonance energy transfer. Biosens Bioelectron 2011; 26:4497-502. [DOI: 10.1016/j.bios.2011.05.009] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2011] [Revised: 04/21/2011] [Accepted: 05/04/2011] [Indexed: 10/18/2022]
|
96
|
Gupta R, Baldock SJ, Fielden PR, Grieve BD. Capillary zone electrophoresis for the analysis of glycoforms of cellobiohydrolase. J Chromatogr A 2011; 1218:5362-8. [PMID: 21726866 DOI: 10.1016/j.chroma.2011.06.036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2011] [Revised: 06/08/2011] [Accepted: 06/09/2011] [Indexed: 02/01/2023]
Abstract
Cellobiohydrolase (CBH) is an important enzyme for the conversion of lignocellulosic biomass to ethanol. This work separated the glycoforms of CBH possessing different numbers of neutral mannoses using capillary zone electrophoresis (CZE) in a 50 mM, pH 7.5 phosphate buffer. The method analysed CBH in an intact form using a polyacrylamide coated fused silica capillary without requiring additives or labelling of the enzyme. The migration time of the major peak was found to be 21.6±0.1 min (n=3) and the approach is suitable for testing of batch-to-batch consistency of CBH. Ease-of-use, automation and speed are the other benefits due to which the use of CZE for analysing glycoforms of CBH was concluded to be ideal.
Collapse
Affiliation(s)
- Ruchi Gupta
- School of Electrical and Electronics Engineering, The University of Manchester, Sackville Street Building, Sackville Street, Manchester M13 9PL, UK.
| | | | | | | |
Collapse
|
97
|
Marino K, Lane JA, Abrahams JL, Struwe WB, Harvey DJ, Marotta M, Hickey RM, Rudd PM. Method for milk oligosaccharide profiling by 2-aminobenzamide labeling and hydrophilic interaction chromatography. Glycobiology 2011; 21:1317-30. [DOI: 10.1093/glycob/cwr067] [Citation(s) in RCA: 116] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
|
98
|
Harvey DJ. Derivatization of carbohydrates for analysis by chromatography; electrophoresis and mass spectrometry. J Chromatogr B Analyt Technol Biomed Life Sci 2011; 879:1196-225. [DOI: 10.1016/j.jchromb.2010.11.010] [Citation(s) in RCA: 182] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2010] [Revised: 11/01/2010] [Accepted: 11/06/2010] [Indexed: 12/21/2022]
|
99
|
Chen X, Khairallah GN, O’Hair RA, Williams SJ. Fixed-charge labels for simplified reaction analysis: 5-hydroxy-1,2,3-triazoles as byproducts of a copper(I)-catalyzed click reaction. Tetrahedron Lett 2011. [DOI: 10.1016/j.tetlet.2011.03.094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
100
|
Kaneshiro K, Fukuyama Y, Iwamoto S, Sekiya S, Tanaka K. Highly Sensitive MALDI Analyses of Glycans by a New Aminoquinoline-Labeling Method Using 3-Aminoquinoline/α-Cyano-4-hydroxycinnamic Acid Liquid Matrix. Anal Chem 2011; 83:3663-7. [DOI: 10.1021/ac103203v] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Kaoru Kaneshiro
- Koichi Tanaka Mass Spectrometry Research Laboratory and Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511, Japan
| | - Yuko Fukuyama
- Koichi Tanaka Mass Spectrometry Research Laboratory and Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511, Japan
| | - Shinichi Iwamoto
- Koichi Tanaka Mass Spectrometry Research Laboratory and Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511, Japan
| | - Sadanori Sekiya
- Koichi Tanaka Mass Spectrometry Research Laboratory and Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511, Japan
| | - Koichi Tanaka
- Koichi Tanaka Mass Spectrometry Research Laboratory and Koichi Tanaka Laboratory of Advanced Science and Technology, Shimadzu Corporation, 1, Nishinokyo-Kuwabaracho Nakagyo-ku, Kyoto 604-8511, Japan
| |
Collapse
|