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Cited by 368

The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.

Localization of Labile Posttranslational Modifications by Electron Capture Dissociation: The Case of γ-Carboxyglutamic Acid

Kelleher, Neil L., Zubarev, Roman A., Bush, Kristine, Furie, Bruce, Furie, Barbara C., McLafferty, Fred W., Walsh, Christopher T.·1999·Analytical Chemistry

Abstract

Tandem mass spectrometry (MS/MS) of 28 residue peptides harboring gamma-carboxylated glutamic acid residues, a posttranslational modification of several proenzymes of the blood coagulation cascade, using either collisions or infrared photons results in complete ejection of the gamma-CO2 moieties (-44 Da) before cleavage of peptide-backbone bonds. However, MS/MS using electron capture dissociation (ECD) in a Fourier transform mass spectrometer cleaves backbone bonds without ejecting CO2, allowing direct localization of this labile modification. Sulfated side chains are also retained in ECD backbone fragmentations of a 21-mer peptide, although CAD causes extensive SO3 loss. ECD thus is a unique complement to conventional methods for MS/MS, causing less undesirable loss of side-chain functionalities as well as more desirable backbone cleavages.

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Metadata

Authors
Kelleher, N. L., Zubarev, R. A., Bush, K., Furie, B., Furie, B. C., McLafferty, F. W., & Walsh, C. T.
Venue
Analytical Chemistry
Published
1999-08-24
Volume
71
Issue
19
Pages
4250-4253
ISSN
  • 0003-2700 (ISSN-L)
  • 1520-6882
OpenAlex
W2013984919
Cited by
368
References
1
FWCI
9.17
Type
journal article
Language
en
Open access
closed

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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