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Prokaryotic Expression, Purification, and Production of Glutathione S-Transferase-tagged Neural Stem Cell Specific Peptides from Phage Display Screening

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Combining stem cell with phage display to discover novel biomarkers is a new field in stem cell studies. Novel peptides obtained through phage display panning have been functionally identified and involved into initial applications as cell culture support or cell label. In the present study, we designed a glutathione S-transferase (GST)-tagged peptide complex to construct an easy and efficient prokaryotic expression and purification platform for peptides obtained from phage display panning. The purified GST-peptide protein could specifically bind to neural stem (NS) cells and could be flexibly used for GST pull down assay or NS cell labeling in future studies. The results of the present study would be useful for cell labeling and future investigations of special receptors on stem cell surface.
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Keywords: Phage display; glutathione-S-transferase-tagged; neural stem cell; peptide; prokaryotic expression

Document Type: Research Article

Publication date: February 1, 2013

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  • Protein & Peptide Letters publishes short papers in all important aspects of protein and peptide research, including structural studies, recombinant expression, function, synthesis, enzymology, immunology, molecular modeling, drug design etc. Manuscripts must have a significant element of novelty, timeliness and urgency that merit rapid publication. Reports of crystallisation, and preliminary structure determinations of biologically important proteins are acceptable. Purely theoretical papers are also acceptable provided they provide new insight into the principles of protein/peptide structure and function.
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