ArticleJournal of the American Society for Mass Spectrometry2011
Diagnostic NH and OH vibrations for oxazolone and diketopiperazine structures: b2 from protonated triglycine.
Article in Journal of the American Society for Mass Spectrometry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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8 citing papers in PubMed, 36 citations in OpenAlex.
- Carbon Dots Crosslinked Egg White Hydrogel for Tissue Engineering.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2024Article
- Participation of C-H Protons in the Dissociation of a Proton Deficient Dipeptide.Journal of the American Society for Mass Spectrometry · 2017Article
- Thermodynamics and Reaction Mechanisms of Decomposition of the Simplest Protonated Tripeptide, Triglycine: A Guided Ion Beam and Computational Study.Journal of the American Society for Mass Spectrometry · 2017Article
- Spectroscopic identification of cyclic imide b2-ions from peptides containing Gln and Asn residues.Journal of the American Society for Mass Spectrometry · 2013Article
- Conformation-specific spectroscopy of peptide fragment ions in a low-temperature ion trap.Journal of the American Society for Mass Spectrometry · 2012Article
- Disfavoring macrocycle b fragments by constraining torsional freedom: the "twisted" case of QWFGLM b6.Journal of the American Society for Mass Spectrometry · 2012Article
- Characterizing the intramolecular H-bond and secondary structure in methylated GlyGlyH+ with H2 predissociation spectroscopy.Journal of the American Society for Mass Spectrometry · 2011Article
- Diagnosing the protonation site of b2 peptide fragment ions using IRMPD in the X-H (X = O, N, and C) stretching region.Journal of the American Society for Mass Spectrometry · 2011Article
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4 authors at 1 institution in 1 country.
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No grant is acknowledged in the PubMed record.
Abstract
We present infrared multiple photon dissociation (IRMPD) spectra in the hydrogen stretching region of the simplest b fragment, b(2) from protonated triglycine, contrasted to that of protonated cyclo(Gly-Gly). Both spectra confirm the presence of intense, diagnostic vibrations linked to the site of proton attachment. Protonated cyclo(Gly-Gly) serves as a reference spectrum for the diketopiperazine structure, showing a diagnostic O-H(+) stretch of the protonated carbonyl group at 3585 cm(-1). Conversely, b(2) from protonated triglycine exhibits a strong band at 3345 cm(-1), associated with the N-H stretching mode of the protonated oxazolone ring structure. Other weaker N-H stretches can also be discerned, such as the amino NH(2) and amide NH bands. These results demonstrate the usefulness of the hydrogen stretching region, and hence benchtop optical parametric oscillator/amplifier (OPO/A) set-ups, in making structural assignments of product ions in collision-induced dissociation (CID) of peptides.
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