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Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography

หน่วยงาน Nanyang Technological University, Singapore

รายละเอียด

ชื่อเรื่อง : Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography
นักวิจัย : Hao, Piliang , Guo, Tiannan , Sze, Siu Kwan
คำค้น : DRNTU::Science::Biological sciences::Molecular biology.
หน่วยงาน : Nanyang Technological University, Singapore
ผู้ร่วมงาน : -
ปีพิมพ์ : 2554
อ้างอิง : Hao, P., Guo, T., & Sze, S. K. (2011). Simultaneous Analysis of Proteome, Phospho- and Glycoproteome of Rat Kidney Tissue with Electrostatic Repulsion Hydrophilic Interaction Chromatography. PLoS ONE, 6(2), e16884. , http://hdl.handle.net/10220/6797 , http://dx.doi.org/10.1371/journal.pone.0016884
ที่มา : -
ความเชี่ยวชาญ : -
ความสัมพันธ์ : PLoS ONE
ขอบเขตของเนื้อหา : -
บทคัดย่อ/คำอธิบาย :

Protein post-translational modifications (PTMs) are regulated separately from protein expression levels. Thus, simultaneous characterization of the proteome and its PTMs is pivotal to an understanding of protein regulation, function and activity. However, concurrent analysis of the proteome and its PTMs by mass spectrometry is a challenging task because the peptides bearing PTMs are present in sub-stoichiometric amounts and their ionization is often suppressed by unmodified peptides of high abundance. We describe here a method for concurrent analysis of phosphopeptides, glycopeptides and unmodified peptides in a tryptic digest of rat kidney tissue with a sequence of ERLIC and RP-LC-MS/MS in a single experimental run, thereby avoiding inter-experimental variation. Optimization of loading solvents and elution gradients permitted ERLIC to be performed with totally volatile solvents. Two SCX and four ERLIC gradients were compared in details, and one ERLIC gradient was found to perform the best, which identified 2929 proteins, 583 phosphorylation sites in 338 phosphoproteins and 722 N-glycosylation sites in 387 glycoproteins from rat kidney tissue. Two hundred low-abundance proteins with important functions were identified only from the glyco- or phospho-subproteomes, reflecting the importance of the enrichment and separation of modified peptides by ERLIC. In addition, this strategy enables identification of unmodified and corresponding modified peptides (partial phosphorylation and N-glycosylation) from the same protein. Interestingly, partially modified proteins tend to occur on proteins involved in transport. Moreover, some membrane or extracellular proteins, such as versican core protein and fibronectin, were found to have both phosphorylation and Nglycosylation, which may permit an assessment of the potential for cross talk between these two vital PTMs and their roles in regulation.

บรรณานุกรม :
Hao, Piliang , Guo, Tiannan , Sze, Siu Kwan . (2554). Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography.
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Hao, Piliang , Guo, Tiannan , Sze, Siu Kwan . 2554. "Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography".
    กรุงเทพมหานคร : Nanyang Technological University, Singapore.
Hao, Piliang , Guo, Tiannan , Sze, Siu Kwan . "Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography."
    กรุงเทพมหานคร : Nanyang Technological University, Singapore, 2554. Print.
Hao, Piliang , Guo, Tiannan , Sze, Siu Kwan . Simultaneous analysis of proteome, phospho- and glycoproteome of rat kidney tissue with electrostatic repulsion hydrophilic interaction chromatography. กรุงเทพมหานคร : Nanyang Technological University, Singapore; 2554.