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PXD007273

PXD007273 is an original dataset announced via ProteomeXchange.

Dataset Summary
TitleSingle-shot top-down proteomics with capillary zone electrophoresis-electrospray ionization-tandem mass spectrometry for identification of nearly 600 Escherichia coli proteoforms
DescriptionCapillary zone electrophoresis-electrospray ionization-tandem mass spectrometry (CZE-ESI-MS/MS) has been recognized as an invaluable platform for top-down proteomics. However, the scale of top-down proteomics from CZE-MS/MS is still limited due to the low loading capacity and narrow separation window of CZE. In this work, for the first time we systematically evaluated dynamic pH junction method for focusing of intact proteins during CZE-MS. The optimized dynamic pH junction based CZE-MS/MS system approached 1-µL loading capacity, 90-min separation window and high peak capacity (~280) for separation of Escherichia coli proteome. The results represent the largest loading capacity and the highest peak capacity of CZE for top-down characterization of complex proteomes. About 2,800 proteoform-spectrum matches, nearly 600 proteoforms, and 200 proteins were identified from an Escherichia coli lysate by single-shot CZE-MS/MS with spectrum-level false discovery rate (FDR) less than 1%. The number of proteoforms is over three times higher than that from previous single-shot CZE-MS/MS.
HostingRepositoryPRIDE
AnnounceDate2024-10-22
AnnouncementXMLSubmission_2024-10-22_04:14:16.295.xml
DigitalObjectIdentifier
ReviewLevelPeer-reviewed dataset
DatasetOriginOriginal dataset
RepositorySupportUnsupported dataset by repository
PrimarySubmitterLiangliang Sun
SpeciesList scientific name: Escherichia coli; NCBI TaxID: 562;
ModificationListiodoacetamide derivatized residue
InstrumentQ Exactive
Dataset History
RevisionDatetimeStatusChangeLog Entry
02017-08-15 01:43:27ID requested
12017-10-30 03:13:57announced
22024-10-22 04:14:17announced2024-10-22: Updated project metadata.
Publication List
10.1021/acs.analchem.7b02532;
Lubeckyj RA, McCool EN, Shen X, Kou Q, Liu X, Sun L, Single-Shot Top-Down Proteomics with Capillary Zone Electrophoresis-Electrospray Ionization-Tandem Mass Spectrometry for Identification of Nearly 600 Escherichia coli Proteoforms. Anal Chem, 89(22):12059-12067(2017) [pubmed]
Keyword List
curator keyword: Technical, Biological
submitter keyword: top-down proteomics,CZE-MS/MS, E.coli
Contact List
Liangliang Sun
contact affiliationMichigan State University
contact emaillsun@chemistry.msu.edu
lab head
Liangliang Sun
contact affiliationMichigan State University
contact emaillsun@chemistry.msu.edu
dataset submitter
Full Dataset Link List
Dataset FTP location
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PRIDE project URI
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