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American Chemical Society, Journal of Proteome Research, 11(7), p. 4869-4877, 2008

DOI: 10.1021/pr800473j

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A Comparative Study of Electrostatic Repulsion-Hydrophilic Interaction Chromatography (ERLIC) versus SCX-IMAC-Based Methods for Phosphopeptide Isolation/Enrichment

Journal article published in 2008 by Chee Sian Gan, Tiannan Guo ORCID, Huoming Zhang, Sai Kiang Lim, Siu Kwan Sze
This paper is available in a repository.
This paper is available in a repository.

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Abstract

Electrostatic repulsion-hydrophilic interaction chromatography (ERLIC) has been introduced recently for phosphopeptide enrichment. Here we compared ERLIC with the well-established SCX-IMAC for identifying phosphopeptides in EGF-treated A431 cells. The ERLIC approach detected a higher number of phosphopeptides (17 311) than SCX-IMAC (4850), but it only detected 926 unique phosphopeptides compared to 1315 in SCX-IMAC. Only 12% unique phosphopeptides were common to both approaches, suggesting that more comprehensive phosphoproteomes could be generated by complementing SCX-IMAC with ERLIC.