Radical‐driven peptide backbone dissociation tandem mass spectrometry

HB Oh, B Moon - Mass spectrometry reviews, 2015 - Wiley Online Library
In recent years, a number of novel tandem mass spectrometry approaches utilizing radical‐
driven peptide gas‐phase fragmentation chemistry have been developed. These …

TEMPO-assisted free radical-initiated peptide sequencing mass spectrometry (FRIPS MS) in Q-TOF and Orbitrap mass spectrometers: single-step peptide backbone …

I Jang, SY Lee, S Hwangbo, D Kang… - Journal of The …, 2016 - ACS Publications
The present study demonstrates that one-step peptide backbone fragmentations can be
achieved using the TEMPO [2-(2, 2, 6, 6-tetramethyl piperidine-1-oxyl)]-assisted free radical …

Hydrogen bonding constrains free radical reaction dynamics at serine and threonine residues in peptides

DA Thomas, CH Sohn, J Gao… - The Journal of Physical …, 2014 - ACS Publications
Free radical-initiated peptide sequencing (FRIPS) mass spectrometry derives advantage
from the introduction of highly selective low-energy dissociation pathways in target peptides …

Dissociation behavior of a bifunctional tempo‐active ester reagent for peptide structure analysis by free radical initiated peptide sequencing (FRIPS) mass …

C Ihling, F Falvo, I Kratochvil, A Sinz… - Journal of Mass …, 2015 - Wiley Online Library
We have synthesized a homobifunctional active ester cross‐linking reagent containing a
TEMPO (2, 2, 6, 6‐tetramethylpiperidine‐1‐oxy) moiety connected to a benzyl group (Bz) …

One-step peptide backbone dissociations in negative-ion free radical initiated peptide sequencing mass spectrometry

J Lee, H Park, H Kwon, G Kwon, A Jeon… - Analytical …, 2013 - ACS Publications
Peptide dissociation behavior in TEMPO (2, 2, 6, 6-tetramethylpiperidine-1-oxyl)-based
FRIPS (free radical initiated peptide sequencing) mass spectrometry was analyzed in both …

Disulfide bond cleavage in TEMPO‐free radical initiated peptide sequencing mass spectrometry

M Lee, Y Lee, M Kang, H Park, Y Seong… - Journal of mass …, 2011 - Wiley Online Library
The gas‐phase free radical initiated peptide sequencing (FRIPS) fragmentation behavior of
o‐TEMPO‐Bz‐conjugated peptides with an intra‐and intermolecular disulfide bond was …

Free radical-induced site-specific peptide cleavage in the gas phase: Low-energy collision-induced dissociation in ESI-and MALDI mass spectrometry

H Yin, A Chacon, NA Porter, DS Masterson - Journal of the American …, 2007 - Springer
Protein identification is routinely accomplished by peptide sequencing using mass
spectrometry (MS) after enzymatic digestion. Site-specific chemical modification may …

Characterizing peptide neutral losses induced by negative electron-transfer dissociation (NETD)

NG Rumachik, GC McAlister, JD Russell… - Journal of the …, 2012 - ACS Publications
We implemented negative electron-transfer dissociation (NETD) on a hybrid ion
trap/Orbitrap mass spectrometer to conduct ion/ion reactions using peptide anions and …

Side-chain fragmentation of alkylated cysteine residues in electron capture dissociation mass spectrometry

RJ Chalkley, CS Brinkworth, AL Burlingame - Journal of the American …, 2006 - Springer
The recent development of novel fragmentation processes based on either electron capture
directly or transfer from an anion show great potential for solving problems in proteomics that …

Simplifying fragmentation patterns of multiply charged peptides by N-terminal derivatization and electron transfer collision activated dissociation

JA Madsen, JS Brodbelt - Analytical chemistry, 2009 - ACS Publications
N-terminal peptide derivatization strategies used in conjunction with tandem mass
spectrometry to yield simplified fragmentation patterns have shown limited success for the …