Collision-Induced Dissociations of Deprotonated Peptides. Dipeptides Containing Asn, Arg and Lys

1993 ◽  
Vol 46 (5) ◽  
pp. 693 ◽  
Author(s):  
RJ Waugh ◽  
JH Bowie ◽  
ML Gross
Keyword(s):  
Collisional Activation ◽  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Side Chain ◽  
Deprotonated Peptides

The presence and position of Asn, Arg and Lys residues in dipeptides may be determined from a consideration of the collisional activation mass spectra of the (M-H)- ions formed by fast atom bombardment. All spectra show the basic dipeptide cleavage, i.e. NH2CH(R1)CONHCH(R2)CO2- → NH2C(R1)CONHCH(R2)CO2H → NH2C(R1)=C=O + -NHCH(R2)CO2H. There are a number of fragmentations characteristic of a particular α side chain: for example, Arg loses HN=C=NH (42 u).

Metastable ion decomposition and collisional activation mass spectra of 1,2,3-triarylpropen-1-ones

1991 ◽  
Vol 26 (4) ◽  
pp. 298-304
Author(s):  
K. P. Madhusudanan ◽  
S. Durani ◽  
D. M. Reddy ◽  
R. S. Kapil ◽  
Y. Itagaki ◽  
...  
Keyword(s):  
Collisional Activation ◽  
Mass Spectra ◽  
Metastable Ion Decomposition

Fast atom bombardment mass spectra of Fe(CO)3R1CHCR2COR3 compounds

1988 ◽  
Vol 23 (9) ◽  
pp. 674-676 ◽  
Author(s):  
Richard D. Bowen ◽  
Timothy N. Danks ◽  
David Mitchell ◽  
Susan E. Thomas
Keyword(s):  
Mass Spectra ◽  
Fast Atom Bombardment

Evidence for a lysine-specific fragmentation in fast-atom bombardment mass spectra of peptides

1992 ◽  
Vol 6 (4) ◽  
pp. 257-264 ◽  
Author(s):  
Bradley L. Ackermann ◽  
Robert J. Barbuch ◽  
John E. Coutant ◽  
John L. Krstenansky ◽  
Thomas J. Owen
Keyword(s):  
Mass Spectra ◽  
Fast Atom Bombardment

scholarly journals Fast atom bombardment mass spectra of the .BETA.-blocker nipradilol with nitrate ester group-tandem mass spectrometry (MS/MS) and B/E constant linked scanning.

1990 ◽  
Vol 38 (12) ◽  
pp. 3389-3394 ◽  
Author(s):  
Michiaki YONEDA ◽  
Kazuo TSUJIMOTO ◽  
Mamoru OHASHI ◽  
Masami SHIRATSUCHI ◽  
Yasushi OHKAWA ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Tandem Mass Spectrometry ◽  
Beta Blocker ◽  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Ester Group ◽  
Tandem Mass ◽  
Nitrate Ester

Liquid secondary ion mass spectra and fast atom bombardment mass spectra of diquaternary pyridinium oxime salts

1995 ◽  
Vol 30 (2) ◽  
pp. 282-289 ◽  
Author(s):  
Gary J. Kunkel ◽  
Kenneth L. Busch ◽  
Richard Dunphy ◽  
David J. Burinsky ◽  
Ruth Barak ◽  
...  
Keyword(s):  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Secondary Ion

Differentiation of the Isomeric o-(m- and p-) Nitro-(Chloro- and Bromo-)Benzyl-2,4-(and 2,1-) Disubstituted 2-Thiocytosinium Halides by Electron Impact Ionisation and Fast Atom Bombardment Mass Spectrometry

2009 ◽  
Vol 15 (4) ◽  
pp. 497-506 ◽  
Author(s):  
Tomasz Pospieszny ◽  
Elżbieta Wyrzykiewicz
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectra ◽  
Fast Atom Bombardment ◽  
Collision Induced Dissociation ◽  
Mass Measurements ◽  
Fragmentation Pathways ◽  
Mass Spectral ◽  
Fragment Ions ◽  
Accurate Mass Measurements ◽  
Impact Ionisation

Electron ionisation (EI) and fast atom bombardment (FAB) mass spectral fragmentations of nine 2,4-(and 2,1-) disubstituted o-( m- and p-)nitro-(chloro- and bromo-)-2-thiocytosinium halides are investigated. Fragmentation pathways, whose elucidation is assisted by accurate mass measurements and metastable transitions [EI-mass spectrometry (MS)], as well as FAB/collision-induced dissociation (CID) mass spectra measurements are discussed. The correlations between the abundances of the (C11H10N4SO2)+1–3; (C11H10N3SCl)+4–6 and (C11H10N3SBr)+7–9 ions and the selected fragment ions (EI-MS), as well as (C18H16N5SO4)+1–3; (C18H16N3SCl2)+4–6 and (C18H16N3SBr2) + 7–9 ions and the selected ions (C7H6NO2)+1–3; (C7H6Cl)+ 4–6; (C7H6Br)+ 7–9 (FAB-MS) are discussed. The data obtained can be used for distinguishing isomers.

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