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Title: Extending the Separation Space with Trapped Ion Mobility Spectrometry Improves the Accuracy of Isobaric Tag-Based Quantitation in Proteomic LC/MS/MS
Authors: Ogata, Kosuke  kyouindb  KAKEN_id  orcid (unconfirmed)
Ishihama, Yasushi  kyouindb  KAKEN_id  orcid (unconfirmed)
Author's alias: 小形, 公亮
石濱, 泰
Issue Date: 16-Jun-2020
Publisher: American Chemical Society (ACS)
Journal title: Analytical Chemistry
Volume: 92
Issue: 12
Start page: 8037
End page: 8040
Abstract: Two-dimensional separation by nano-LC and trapped ion mobility spectrometry (TIMS) prior to Q/TOF tandem mass spectrometry significantly improves the accuracy of isobaric tag-based quantitation in proteome analysis without the need for additional measurement time for TIMS insertion between LC and Q/TOF MS. The obtained peak capacity of up to 3300 h⁻¹ in LC/TIMS reduced the coisolation of precursor ions at the quadrupole analyzer, resulting in more accurate ratios of reporter ions derived from isobaric tags in product ion spectra obtained at the TOF analyzer. We also found that TIMS with a narrower quadrupole isolation window could reduce the ratio compression effect at least as effectively as the synchronous precursor selection method using MS3 scans without compromising sensitivity or coverage. Our results suggest that the 65 min gradient LC/TIMS/Q/TOF system is an excellent platform for high-throughput proteomics studies.
Rights: This document is the Accepted Manuscript version of a Published Work that appeared in final form in Analytical Chemistry, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see
The full-text file will be made open to the public on 22 May 2021 in accordance with publisher's 'Terms and Conditions for Self-Archiving'.
This is not the published version. Please cite only the published version.
DOI(Published Version): 10.1021/acs.analchem.0c01695
PubMed ID: 32441512
Appears in Collections:Journal Articles

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