Photodissociation of singly protonated peptides at 193 nm investigated with tandem time-of-flight mass spectrometry.
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, upsilon, 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.
Moon
Jeong Hee
JH
National Creative Research Initiative Center for Control of Reaction Dynamics and School of Chemistry, Seoul National University, Seoul 151-742, Korea.
Yoon
So Hee
SH
Kim
Myung Soo
MS
D000595:Amino Acid Sequence; D000804:Angiotensin II / Q000737:chemistry; D001120:Arginine / Q000737:chemistry; D013058:Mass Spectrometry; D008969:Molecular Sequence Data; D010455:Peptides / Q000737:chemistry*; D010777:Photochemistry; D011522:Protons
D010455:Peptides; D011522:Protons; D000804:Angiotensin II; D001120:Arginine