title: Study of the mass spectrometric fragmentation of pseudouridine: comparison of fragmentation data obtained by matrix-assisted laser desorption/ionisation post-source decay, electrospray ion trap multistage mass spectrometry, and by a method utilising electrospray quadrupole time-of-flight tandem mass spectrometry and in-source fragmentation.
abstract: Many nucleosides and their modified forms have been studied by mass spectrometry elaborating the detailed fragmentation pathways under MS2 and MS(n) conditions. Although the C-nucleoside pseudouridine has been fragmented and studied briefly, usually amongst many other nucleosides, it has not been investigated to the same extent as other nucleosides. In this report a number of different mass spectrometric techniques are applied to obtain a fuller picture of pseudouridine fragmentation. At the same time this study is used to compare different tandem mass spectrometric techniques, including a novel methodology utilising a quadrupole time-of-flight (Q-ToF) instrument for MS(n) analysis comparable with that available with an ion trap mass spectrometer.
authors.affiliation: Biomolecular Analysis Mass Spectrometry (BAMS) Facility, Grove Building, University of Wales Swansea, Singleton Park, Swansea SA2 8PP, UK. E.dudley@swansea.ac.uk
authors.forename: Edward
authors.initials: E
authors.lastname: Dudley
authors.forename: Robin
authors.initials: R
authors.lastname: Tuytten
authors.forename: Alison
authors.initials: A
authors.lastname: Bond
authors.forename: Filip
authors.initials: F
authors.lastname: Lemière
authors.forename: A Gareth
authors.initials: AG
authors.lastname: Brenton
authors.forename: Eddy L
authors.initials: EL
authors.lastname: Esmans
authors.forename: Russell P
authors.initials: RP
authors.lastname: Newton
mesh_terms: D011560:Pseudouridine / Q000032:analysis / Q000737:chemistry*; D021241:Spectrometry, Mass, Electrospray Ionization / Q000295:instrumentation / Q000379:methods*; D019032:Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization / Q000295:instrumentation / Q000379:methods*
chemical_list: D011560:Pseudouridine