PXD015179-2

PXD015179 is an original dataset announced via ProteomeXchange.

Title	Finding the Sweet Spot in ERLIC Mobile Phase for Simultaneous Enrichment of N-Glyco and Phosphopeptides
Description	Simultaneous enrichment of glyco- and phospho- peptides will benefit the studies of biological processes regulated by these post-translational modifications (PTMs). It will also reveal potential crosstalk between these two ubiquitous PTMs. Unlike custom designed multifunctional solid phase extraction (SPE) materials, operating strong-anion exchange (SAX) resin in electrostatic repulsion-hydrophilic interaction chromatography (ERLIC) mode provides a readily available strategy to analytical labs for enrichment of these PTMs for subsequent mass spectrometry (MS)-based characterization. However, the choice of mobile phase has largely relied on empirical rules from hydrophilic interaction chromatography (HILIC) or ion-exchange chromatography (IEX) without further optimization and adjustments. In this study, ten mobile phase compositions of ERLIC were systematically compared; the impact of multiple factors including organic phase proportion, ion pairing reagent, pH and salt on the retention of glycosylated and phosphorylated peptides were evaluated. This study demonstrated good enrichment of glyco- and phospho- peptides from the nonmodified peptides in a complex tryptic digest. Moreover, the enriched glyco- and phospho- peptides elute in different fractions by orthogonal retention mechanisms of hydrophilic interaction and electrostatic interaction in ERLIC, maximizing the LC-MS identification of each PTM. The optimized mobile phase can be adapted to the ERLIC HPLC system, where the high resolution in separating multiple PTMs will benefit large-scale MS-based PTM profiling and in-depth characterization.
HostingRepository	PRIDE
AnnounceDate	2019-11-27
AnnouncementXML	Submission_2019-11-27_06:53:50.xml
DigitalObjectIdentifier
ReviewLevel	Peer-reviewed dataset
DatasetOrigin	Original dataset
RepositorySupport	Unsupported dataset by repository
PrimarySubmitter	Yusi Cui
SpeciesList	scientific name: Homo sapiens (Human); NCBI TaxID: 9606;
ModificationList	phosphorylated residue; iodoacetamide derivatized residue
Instrument	Q Exactive HF

Revision	Datetime	Status	ChangeLog Entry
0	2019-08-27 07:31:05	ID requested
1	2019-09-09 03:49:32	announced
⏵ 2	2019-11-27 06:53:51	announced	2019-11-27: Updated project metadata.
3	2024-10-22 04:58:51	announced	2024-10-22: Updated project metadata.

Dataset with its publication pending

curator keyword: Biological

submitter keyword: MM.1S, ERLIC, glycosylation, phosphorylation, LC-MS/MS

Lingjun Li
contact affiliation	School of Pharmacy, University of Wisconsin-Madison
contact email	lingjun.li@wisc.edu
lab head
Yusi Cui
contact affiliation	UW-Madison
contact email	cui42@wisc.edu
dataset submitter

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PRIDE project URI

• PRIDE
  1. PXD015179
     1. Label: PRIDE project
     2. Name: Finding the Sweet Spot in ERLIC Mobile Phase for Simultaneous Enrichment of N-Glyco and Phosphopeptides