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Photodissociation of singly protonated peptides at 193 nm investigated with tandem time‐of‐flight mass spectrometry
Author(s) -
Moon Jeong Hee,
Yoon So Hee,
Kim Myung Soo
Publication year - 2005
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.2184
Subject(s) - chemistry , photodissociation , protonation , tandem mass spectrometry , mass spectrometry , ion , tandem , mass spectrum , analytical chemistry (journal) , ionization , time of flight mass spectrometry , photochemistry , chromatography , organic chemistry , composite material , materials science
Photodissociation at 193 nm of some singly protonated peptides generated by matrix‐assisted laser desorption/ionization was investigated using tandem time‐of‐flight mass spectrometry. For peptides with arginine at the C‐terminus, x , υ , and w fragment ions were generated preferentially while a and d fragment ions dominated for peptides with arginine at the N‐terminus. These are the same characteristics as photodissociation at 157 nm reported previously. Overall, the photodissociation spectra obtained at 157 and 193 nm were strikingly similar. Copyright © 2005 John Wiley & Sons, Ltd.