Prediction of Collision-Induced Dissociation Spectra of Common N-Glycopeptides for Glycoform Identification

Confident identification of the glycan moieties in glycopeptides by collision-induced dissociation (CID) requires accurate prediction of the CID spectrum of the glycopeptides. In this Article, the kinetic model for the prediction of peptide CID spectra is extended to predict the CID spectra of N-gly...

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Veröffentlicht in:Analytical chemistry (Washington) 2010-12, Vol.82 (24), p.10194-10202
Hauptverfasser: Zhang, Zhongqi, Shah, Bhavana
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Shah, Bhavana
description Confident identification of the glycan moieties in glycopeptides by collision-induced dissociation (CID) requires accurate prediction of the CID spectrum of the glycopeptides. In this Article, the kinetic model for the prediction of peptide CID spectra is extended to predict the CID spectra of N-glycopeptides. The model was trained with 1831 ion-trap CID spectra of N-glycopeptides and is able to predict ion-trap CID spectra with excellent accuracy in ion intensities for N-glycopeptides up to 8000 u in mass. A total of 524 common glycoforms including complex N-glycans with 2−4 antennas, plus high-mannose type and hybrid type, can be predicted.
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subjects Aminoacids, peptides. Hormones. Neuropeptides
Analytical chemistry
Analytical, structural and metabolic biochemistry
Biological and medical sciences
Fundamental and applied biological sciences. Psychology
Glycopeptides - analysis
Glycosylation
Ions
Kinetics
Lectins - analysis
Molecular Weight
Peptides
Polysaccharides - analysis
Proteins
Reaction kinetics
Spectrum Analysis - methods
Sugar
title Prediction of Collision-Induced Dissociation Spectra of Common N-Glycopeptides for Glycoform Identification
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