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Boyd R. From physical chemistry to mass spectrometry to government lab manager in half a century. MASS SPECTROMETRY REVIEWS 2016; 35:272-310. [PMID: 24911188 DOI: 10.1002/mas.21433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 03/26/2014] [Indexed: 06/03/2023]
Affiliation(s)
- Robert Boyd
- Researcher Emeritus, National Research Council of Canada, 40-1425 Lamey's Mill Road, Vancouver, British Columbia, Canada, V6H 3W2
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2
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Rodenburg L, Brandsma R, Tintel C, van Thuijl J, Lugtenburg J, Cornelisse J. Synthesis and properties of nitro derivatives of 2-tert-butyl- and 2,7-di-tert-butylpyrene. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/recl.19861050504] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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3
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Pinto R, Olariu R, Lameiras J, Martins F, Dias A, Langley G, Rodrigues P, Maycock C, Santos J, Duarte M, Fernandez M, Costa M. Study of selected benzyl azides by UV photoelectron spectroscopy and mass spectrometry. J Mol Struct 2010. [DOI: 10.1016/j.molstruc.2010.07.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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4
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Maquestiau A, van Haverbeke Y, Flammang R, Abrassart M, Finet D. Mass Analyzed Ion Kinetic Energy Spectrometry with a Modified AEI MS 902 Spectrometer. ACTA ACUST UNITED AC 2010. [DOI: 10.1002/bscb.19780871005] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Covey TR. A tribute to the scientific career of Dr Andries Bruins. EUROPEAN JOURNAL OF MASS SPECTROMETRY (CHICHESTER, ENGLAND) 2010; 16:1-10. [PMID: 20065520 DOI: 10.1255/ejms.1053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Affiliation(s)
- Thomas R Covey
- MDS Analytical Technologies, 71 Four Valley Drive, Concord, Ontario, Canada L4K 4V8
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Caniato R, Filippini R, Cappelletti EM. Naphthoquinone Contents of Cultivated Drosera Species Drosera binata, D. binata var. dichotoma, and D. capensis. ACTA ACUST UNITED AC 2008. [DOI: 10.3109/13880208909053952] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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7
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Kenny PTM, Tamura SY, Fredenhagen A, Naya Y, Nakanishi K, Nishiyama K, Sugiura M, Kita H, Komura H. Symbiotic micro-organisms of insects: A potential new source for biologically active substances. ACTA ACUST UNITED AC 2006. [DOI: 10.1002/ps.2780270203] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Pinto V, Norberto F, Pamplona T, Fernandez MT, Duarte MF. Electron ionisation and fast-atom bombardment mass spectrometry study of diaryl carbonates. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2006; 20:2309-16. [PMID: 16817244 DOI: 10.1002/rcm.2588] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/10/2023]
Abstract
Electron ionisation mass spectrometry studies were performed previously for p-diphenyl carbonate and some monosubstituted diphenyl carbonates. In this work, p-diphenyl carbonate and p-methoxyphenylphenyl carbonate are re-examined, and p-chlorophenyl phenyl carbonate and two disubstituted diphenyl carbonates, bis (p-chlorophenyl) carbonate and p-methoxyphenyl-p-fluorophenyl carbonate, are studied for the first time. The previously established fragmentation routes were observed for all compounds investigated. Some other different sequences were observed, and a fragmentation path, other than decarboxylation, of the molecular ion is proposed. In the fast-atom bombardment study it was observed that the M(+*)/[MH](+) ion abundance ratio increased from 0.44 for compound 1 to 2.95 for compound 5. [MH](+) is not a dominant ion in most of compounds studied, in spite of the presence of a carbonyl group, a strong proton acceptor. The presence of two oxygen atoms bonded to the carbonyl group appears to induce delocalisation of the electron pairs, thus deactivating the carbonyl site for protonation. In addition, m-nitrobenzyl alcohol (NBA) being a relatively aprotic/hydrophobic matrix reinforces the deactivation for protonation. Because the carbonate group and NBA are common features to the study, the contributions of the substituents were taken into account to explain the different behaviour of the five compounds with respect to protonation.
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Affiliation(s)
- Vitor Pinto
- Departamento de Química e Bioquímica, Faculdade de Ciências da Universidade de Lisboa, Edifício C8, Campo Grande, 1749-016 Lisboa, Portugal
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Grewal RN, El Aribi H, Harrison AG, Siu KWM, Hopkinson AC. Fragmentation of Protonated Tripeptides: The Proline Effect Revisited. J Phys Chem B 2004. [DOI: 10.1021/jp031093k] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- R. Natasha Grewal
- Department of Chemistry and Centre for Research in Mass Spectrometry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3, and Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Houssain El Aribi
- Department of Chemistry and Centre for Research in Mass Spectrometry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3, and Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Alex G. Harrison
- Department of Chemistry and Centre for Research in Mass Spectrometry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3, and Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - K. W. Michael Siu
- Department of Chemistry and Centre for Research in Mass Spectrometry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3, and Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Alan C. Hopkinson
- Department of Chemistry and Centre for Research in Mass Spectrometry, York University, 4700 Keele Street, Toronto, Ontario, Canada M3J 1P3, and Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
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Harrison AG. Fragmentation reactions of protonated peptides containing glutamine or glutamic acid. JOURNAL OF MASS SPECTROMETRY : JMS 2003; 38:174-187. [PMID: 12577284 DOI: 10.1002/jms.427] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A variety of protonated dipeptides and tripeptides containing glutamic acid or glutamine were prepared by electrospray ionization or by fast atom bombardment ionization and their fragmentation pathways elucidated using metastable ion studies, energy-resolved mass spectrometry and triple-stage mass spectrometry (MS(3)) experiments. Additional mechanistic information was obtained by exchanging the labile hydrogens for deuterium. Protonated H-Gln-Gly-OH fragments by loss of NH(3) and loss of H(2)O in metastable ion fragmentation; under collision-induced dissociation (CID) conditions loss of H-Gly-OH + CO from the [MH - NH(3)](+) ion forms the base peak C(4)H(6)NO(+) (m/z 84). Protonated dipeptides with an alpha-linkage, H-Glu-Xxx-OH, are characterized by elimination of H(2)O and by elimination of H-Xxx-OH plus CO to form the glutamic acid immonium ion of m/z 102. By contrast, protonated dipeptides with a gamma-linkage, H-Glu(Xxx-OH)-OH, do not show elimination of H(2)O or formation of m/z 102 but rather show elimination of NH(3), particularly in metastable ion fragmentation, and elimination of H-Xxx-OH to form m/z 130. Both the alpha- and gamma-dipeptides show formation of [H-Xxx-OH]H(+), with this reaction channel increasing in importance as the proton affinity (PA) of H-Xxx-OH increases. The characteristic loss of H(2)O and formation of m/z 102 are observed for the protonated alpha-tripeptide H-Glu-Gly-Phe-OH whereas the protonated gamma-tripeptide H-Glu(Gly-Gly-OH)-OH shows loss of NH(3) and formation of m/z 130 as observed for dipeptides with the gamma-linkage. Both tripeptides show abundant formation of the y(2)'' ion under CID conditions, presumably because a stable anhydride neutral structure can be formed. Under metastable ion conditions protonated dipeptides of structure H-Xxx-Glu-OH show abundant elimination of H(2)O whereas those of structure H-Xxx-Gln-OH show abundant elimination of NH(3). The importance of these reaction channels is much reduced under CID conditions, the major fragmentation mode being cleavage of the amide bond to form either the a(1) ion or the y(1)'' ion. Particularly when Xxx = Gly, under CID conditions the initial loss of NH(3) from the glutamine containing dipeptide is followed by elimination of a second NH(3) while the initial loss of H(2)O from the glutamic acid dipeptide is followed by elimination of NH(3). Isotopic labelling shows that predominantly labile hydrogens are lost in both steps. Although both [H-Gly-Glu-Gly-OH]H(+) and [H-Gly-Gln-Gly-OH]H(+) fragment mainly to form b(2) and a(2) ions, the latter also shows elimination of NH(3) plus a glycine residue and formation of protonated glycinamide. Isotopic labelling shows extensive mixing of labile and carbon-bonded hydrogens in the formation of protonated glycinamide.
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Affiliation(s)
- Alex G Harrison
- Department of Chemistry, University of Toronto, Toronto, Ontario M5S 3H6, Canada.
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11
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Duarte MF, Martins F, Fernandez MT, Langley GJ, Rodrigues P, Barros MT, Costa ML. Mass spectrometric study of aliphatic alpha-carbonyl azides. RAPID COMMUNICATIONS IN MASS SPECTROMETRY : RCM 2003; 17:957-962. [PMID: 12717769 DOI: 10.1002/rcm.1005] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A series of derivatives of 2-azidoacetic acid and 2-azidoacetone were synthesized and their behaviour under electron ionization conditions was investigated. This paper reports the electron ionization fragmentation mechanisms for five aliphatic alpha-carbonyl azides, which were clarified by accurate mass measurements and B/E linked scans. The substituent influences the abundance and the nature of the ions resulting from the molecular ion fragmentation.
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Affiliation(s)
- M Filomena Duarte
- Departamento de Química e Bioquímica da Faculdade de Ciências da Universidade de Lisboa, Campo Grande, 1749-016 Lisboa, Portugal.
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Trott GW, Porter CJ, Beynon JH, Brenton AG, Morgan RP. Improved accuracy and linearity of Hall probes and their application to linked scans. ACTA ACUST UNITED AC 2001. [DOI: 10.1088/0022-3735/12/10/022] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Deng Y, Lee JP, Tianasoa-Ramamonjy M, Snyder JK, Des Etages SA, Kanada D, Snyder MP, Turner CJ. New antimicrobial flavanones from Physena madagascariensis. JOURNAL OF NATURAL PRODUCTS 2000; 63:1082-1089. [PMID: 10978202 DOI: 10.1021/np000054m] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Two new flavanones (1 and 2) with antibacterial activity were isolated from the methanolic extract of the dried leaves of Physena madagascariensis using activity against Staphylococcus aureus to guide the isolation. A third flavonoid, a flavanone dimer linked by a methylene group (3) was also isolated and proved to be inactive. The structures of 1 and 2 were established primarily from NMR studies, while that of 3 required more extensive mass spectrometric analysis. All three flavanones had lavandulyl units in the limonene form. Flavanones 1 and 2 were active against several bacteria at concentrations as low as 4 microM.
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Affiliation(s)
- Y Deng
- Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, Massachusetts 02215, USA
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Harrison AG, Csizmadia IG, Tang TH. Structure and fragmentation of b2 ions in peptide mass spectra. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2000; 11:427-436. [PMID: 10790847 DOI: 10.1016/s1044-0305(00)00104-5] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
In a number of cases the b2 ion observed in peptide mass spectra fragments directly to the a1 ion. The present study examines the scope of this reaction and provides evidence as to the structure(s) of the b2 ions undergoing fragmentation to the a1 ion. The b2 ion H-Ala-Gly+ fragments, in part, to the a1 ion, whereas the isomeric b2 ion H-Gly-Ala+ does not fragment to the a1 ion. Ab initio calculations of ion energies show that this different behavior can be rationalized in terms of protonated oxazolone structures for the b2 ions provided one assumes a reverse activation energy of approximately 1 eV for the reaction b2-->a2; such a reverse activation energy is consistent with experimental kinetic energy release measurements. Experimentally, the H-Aib-Ala+ b2 ion, which must have a protonated oxazolone structure, fragments extensively to the a1 ion. We conclude that the proposal by Eckart et al. (J. Am. Soc. Mass Spectrom. 1998, 9, 1002) that the b2 ions which undergo fragmentation to a1 ions have an immonium ion structure is not necessary to rationalize the results, but that the fragmentation does occur from a protonated oxazolone structure. It is shown that the b2-->a1 reaction occurs extensively when the C-terminus residue in the b2 ion is Gly and with less facility when the C-terminus residue is Ala. When the C-terminus residue is Val or larger, the b2-->a1 reaction cannot compete with the b2-->a2 fragmentation reaction. Some preliminary results on the fragmentation of a2 ions are reported.
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Affiliation(s)
- A G Harrison
- Department of Chemistry, University of Toronto, Ontario, Canada.
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Affiliation(s)
- T Matsuo
- Osaka University, Toyonaka, Osaka, Japan
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Shaw D, Holland D, MacDonald M, Hayes M, Shpinkova L, Rennie E, Johnson C, Parker J, von Niessen W. An experimental and theoretical study of the spectroscopic and thermodynamic properties of toluene. Chem Phys 1998. [DOI: 10.1016/s0301-0104(98)00031-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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18
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Strobel FH. Synchronized scanning of the first and second mass spectrometers on tandem double-focusing mass spectrometers. Anal Chem 1997; 69:105-7. [PMID: 8990980 DOI: 10.1021/ac9608634] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A method is described to synchronize the scans of the first and second double-focusing mass spectrometers of a tandem double-focusing mass spectrometer. The scans are synchronized by scanning the first mass spectrometer with voltages instead of the magnetic field. The method is demonstrated with scans that provide all of the precursor ions that produce a selected product ion (precursor ion scan). These precursor ion scans are compared to the previous method of obtaining precursor ion scans on a tandem double-focusing mass spectrometer. The precursor ion scans using the synchronized scanning allow for the use of high-energy collisions on any tandem double-focusing mass spectrometer, while limiting the mass range possible in a single scan. The limited mass range may be corrected by obtaining several spectra with different magnetic fields on the first mass spectrometer.
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Affiliation(s)
- F H Strobel
- Emory University Mass Spectrometry Center, Department of Chemistry, Atlanta, Georgia 30322, USA
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Visonà P, Benetollo F, Rossetto G, Zanella P, Traldi P. Synthesis, mass spectrometry and NMR spectroscopy studies of the (CH3)2 In(C2H5) system: X-ray crystal structure of a diphosphine-bridged complex. J Organomet Chem 1996. [DOI: 10.1016/0022-328x(95)05976-v] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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20
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Leather C, Wilkins AC, Brenton AG. Influence of the length and position of the collision cell on the resolving power attainable from collisionally activated processes in sector instruments. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 1995; 6:212-219. [PMID: 24214120 DOI: 10.1016/1044-0305(94)00123-h] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/1994] [Revised: 11/02/1994] [Accepted: 11/03/1994] [Indexed: 06/02/2023]
Abstract
The energy resolution in a high resolution tandem mass spectrometer was investigated in terms of the length and position of the central collision cell. Both these parameters have to be chosen carefully to eliminate collisional broadening phenomena that can severely limit the energy resolution in such instruments. A theory that describes collisional broadening, to first order, has been derived that accounts for the observed phenomena. It was found experimentally that collisional broadening can be reduced to less than 0.001 eV per kiloelectronvolt collision energy. Experimental data confirmed that only the size of the resolving slits and thermal broadening, due to the target gas, limited the ultimate energy resolution available.
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Affiliation(s)
- C Leather
- Mass Spectrometry Research Unit, Swansea University Wales, SA2 8PP, Swansea, UK
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Jackson A, Despeyroux D, Jennings K. The observation of broad metastable ion peaks in the surface-induced dissociation mass spectra of protonated and cationated peptides. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0168-1176(94)04104-f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Frère P, Gorgues A, Garín J, Orduna J. Proximity effects in mass spectrometry. Electron impact ionization-induced cyclization of 1,2-bis(1,4-dithiafulven-6-yl)benzenes. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/oms.1210291011] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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23
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Andreu R, Gayán I, Garín J, Orduna J, Savirón M. Differentiation and electron ionization-induced isomerization of 4,5-Bis(alkylthio)-1,3-dithiole-2-thiones and 1,2-dithiole-3-thiones. ACTA ACUST UNITED AC 1994. [DOI: 10.1002/oms.1210290610] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Qiao K, Fischer R, Paolucci G. Metal-bridging vs. chelating Me2Si(C5H4)2 ligands in dinuclear complexes. J Organomet Chem 1993. [DOI: 10.1016/0022-328x(93)80425-b] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Bowen RD, Colburn AW, Derrick PJ. Unimolecular reactions of isolated organic ions: reactions of the immonium ions CH2N+(CH3)CH(CH3)2, CH2N+(CH3)CH2CH2CH3and CH2N+(CH2CH2CH3)2. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/p29930002363] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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de Vries MP, Oudman D, Weringa WD. Fragmentations and rearrangements of metastable [C2H5OS]+ ions. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/oms.1210271025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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28
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Costa C, Bertazzo A, Allegri G, Curcuruto O, Traldi P. Indole alkaloids from the roots of an african plantsecuridaca longipedunculata.I. Isolation by column chromatography and preliminary structural characterization by mass spectrometry. J Heterocycl Chem 1992. [DOI: 10.1002/jhet.5570290647] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Costa C, Bertazzo A, Allegri G, Toffano G, Curcuruto O, Traldi P. Melanin biosynthesis from dopamine. II. A mass spectrometric and collisional spectroscopic investigation. PIGMENT CELL RESEARCH 1992; 5:122-31. [PMID: 1409449 DOI: 10.1111/j.1600-0749.1992.tb00008.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Electron impact (EI) and fast atom bombardment (FAB) mass spectrometry together with collisional activation (CA) experiments were applied to the study of the oxidation pathway of dopamine by tyrosinase. In order to prevent attachment of the protein to the highly reactive intermediates, ultrafiltration was employed to remove the enzyme at different reaction times. FAB, privileging molecular species formation, was successfully used for identification of transient intermediates and their relative concentrations with respect to time, directly in the reaction mixture. The presence of isobaric molecular species made chromatographic separation necessary. Further EI mass spectrometry and collision spectroscopy led to structural identification of pure components. Of these, dopamine-o-quinone, leucoaminochrome, and aminochrome semiquinone were characterized for the first time as real intermediates in dopamine melanogenesis, in agreement with previous hypotheses. This approach elucidated the pathway of dopamine melanogenesis.
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Affiliation(s)
- C Costa
- Dipartimento di Scienze Farmaceutiche-Centro di Studio sulla Chimica del Farmaco, Università di Padova, Italy
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Bordas-Nagy J, Despeyroux D, Jennings KR. Comparison of helium and argon as collision gases in the high energy collision-induced decomposition of MH(+) ions of peptides. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 1992; 3:502-514. [PMID: 24234493 DOI: 10.1016/1044-0305(92)85027-h] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/1991] [Revised: 01/13/1992] [Accepted: 01/14/1992] [Indexed: 06/02/2023]
Abstract
Collision-induced decompositions (CID) of protonated peptides were studied using a four-sector mass spectrometer. The collision gases employed were helium and argon. The CID spectra of several peptides covering the molecular mass region of 905-2465 u were recorded. These investigations established several previously unrecognized differences between the CID spectra obtained with helium and argon as collision gases. These can be summarized as follows: (1) Structurally significant and specific side chain fragmentations (dn (f), wn (f) and vn, ion types) are greatly reduced or completely missing in the CID spectra obtained with helium as a collision gas compared to those obtained with argon. (2) As the peptide molecular mass increases, argon, which is heavier than helium, is increasingly more efficient than helium for generating fragment ions.
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Affiliation(s)
- J Bordas-Nagy
- Department of Chemistry, University of Warwick, CV47AL, Coventry, England, UK
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Craig AG, Rivier JE. Metastable fragmentation of somatostatin-14 (SS-14) and a series of SS-14 analogs formed with liquid secondary ion mass spectrometry: Observation of fragment ions which involve unsymmetric disulfide bridge cleavage concomitant with peptide chain cleavage. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/oms.1210270503] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Bordas-Nagy J, Despeyroux D, Jennings KR, Gaskell SJ. Experimental aspects of the collision-induced decomposition of ions in a four-sector tandem mass spectrometer. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/oms.1210270410] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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33
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Fast-atom bombardment (FAB) mass spectra of coordination complexes: aggregation processes in the mass spectra of Group 11 alkynyl complexes. J Organomet Chem 1992. [DOI: 10.1016/0022-328x(92)83090-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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34
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Desmarteau DD, Resnati G, Favretto D, Traldi P. Comparison by mass spectrometry of ring cleavage in barbituric acid and 5-fluorobarbituric acid derivatives. ACTA ACUST UNITED AC 1992. [DOI: 10.1002/oms.1210270309] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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35
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Costa C, Bertazzo A, Allegri G, Catinella S, Traldi P. Hydroxyindole intermediates in the process of melanogenesis: A mass spectrometric study. J Heterocycl Chem 1991. [DOI: 10.1002/jhet.5570280838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bortolini O, Fantin G, Curcuruto O, Traldi P, Iwanow A, Wróbel JT. Stereochemical studies by mass spectrometry: C15Nuphar alkaloids. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/oms.1210261108] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Paolucci G, Fischer R, Benetollo F, Seraglia R, Bombieri G. Synthesis, spectroscopy, and crystal structure of a new stable biscyclopentadienyl uranium(IV) dichloride containing two C5H4-rings interlinked by a metal-coordinated 2,6-bis(methylene)pyridyl unit. J Organomet Chem 1991. [DOI: 10.1016/0022-328x(91)86077-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Evans C, Traldi P, Bambagiotti-Alberti M, Giannellini V, Coran SA, Vincieri FF. Positive and negative fast atom bombardment mass spectrometry and collision spectroscopy in the structural characterization of mono-, di- and triglycerides. ACTA ACUST UNITED AC 1991. [DOI: 10.1002/bms.1200200604] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gerhardinger C, Lapolla A, Crepaldi G, Fedele D, Ghezzo E, Seraglia R, Traldi P. Evidence of acid hydrolysis as responsible for 2-(2-furoyl)-4(5)-(2-furanyl)-1H-imidazole (FFI) production. Clin Chim Acta 1990; 189:335-40. [PMID: 2225464 DOI: 10.1016/0009-8981(90)90315-j] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- C Gerhardinger
- Istituto di Medicina Interna, Policlinico Universitario, Padua, Italy
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Bertani R, Cecchetto W, Polloni R, Crociani B, Seraglia R, Traldi P. Comparison of hard vaporization and soft ionization techniques in the mass spectrometry of some palladium(II) and platinum(II) complexes with C-bonded heterocyclic ligands. Inorganica Chim Acta 1990. [DOI: 10.1016/s0020-1693(00)80279-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ghezzo E, Sturaro A, Traldi P, Bravo P, Viani F. An unusual HgCl rearrangement in electron impact mass spectrometry of some halomercurioalkyl derivatives. J Heterocycl Chem 1990. [DOI: 10.1002/jhet.5570270523] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Curcuruto O, Traldi P, Cativiela C, De Villegas MDD, Garcia JI, Mayoral JA, Ajò D. Electron impact mass spectrometry and collisional spectroscopy in the structural characterization of 4-benzylidene and 4-phenylethylidene-2-phenyl-5(4H)-oxazolones. J Heterocycl Chem 1990. [DOI: 10.1002/jhet.5570270558] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Vincenti M, Guglielmetti G, Andriollo N, Cassani G. Structural analysis of macrotetralide antibiotic mixtures using collision-induced dissociation mass spectrometry. ACTA ACUST UNITED AC 1990. [DOI: 10.1002/bms.1200190407] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Audisio G, Catellani M, Destri S, Pelli B, Traldi P. Mass spectrometric synthesis.V. The gas-phase ion-molecule dimerization of some sulfur containing heterocycles. J Heterocycl Chem 1990. [DOI: 10.1002/jhet.5570270265] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Bortolini O, Traldi P. FAB-Induced deprotonation, elimination and decomposition of 1,3-dithiolaneS-oxides. J Heterocycl Chem 1990. [DOI: 10.1002/jhet.5570270239] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Lapolla A, Gerhardinger C, Ghezzo E, Seraglia R, Sturaro A, Crepaldi G, Fedele D, Traldi P. Identification of furoyl-containing advanced glycation products in collagen samples from diabetic and healthy rats. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1033:13-8. [PMID: 2302410 DOI: 10.1016/0304-4165(90)90187-2] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The compounds resulting from the reaction of glucose with proteins (advanced glycation products) can be important markers of chronic diabetic complications. To test the possible diagnostic value of advanced glycation products containing the furoyl moiety, collagen samples from diabetic and healthy rats were analyzed by parent ion spectroscopy. In our study, we compared normal collagen, diabetic collagen and normal collagen incubated with different glucose concentrations and we employed different hydrolysis procedures (HCl and proteinase). Mass spectroscopic measurements performed on hydrolyzed samples showed that either different samples or different hydrolysis procedures produce a similar set of furoyl-containing compounds. 2-(2-Furoyl)-4(5)-(2-furanyl)-1H-imidazole (FFI) which has been reported to be one of the advanced glycation products, was never found in any of the samples examined. Hence neither FFI nor furoyl-containing molecules can be considered markers of advanced glycation processes.
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Affiliation(s)
- A Lapolla
- Istituto di Medicina Interna, Patologia Medica 1, Policlinico Universitario, Padova, Italy
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Caniato R, Filippini R, Cappelletti E, Scandola M, Traldi P. Direct analysis of thiophene-containing compounds In Tagetes (Asteraceae) leaf secretory cavities by tandem mass spectrometry. Anal Chim Acta 1990. [DOI: 10.1016/s0003-2670(00)81240-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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