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Lys-C/Trypsin Tandem-Digestion Protocol for Gel-Free Proteomic Analysis of Colon Biopsies

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Part of the book series: Methods in Molecular Biology ((MIMB,volume 1959))

Abstract

The protocol presented was specifically optimized for in-depth analysis of the human colon mucosa proteome. After cell lysis in a sodium deoxycholate/urea buffer, a tandem digestion with Lys-C and trypsin was performed. Prior to LC-MS/MS analysis, peptides were TMT-labeled and fractionated by high pH reversed-phase spin columns. This protocol is a powerful, reproducible, sample-saving, and cost-effective option when an in-depth quantitative proteome analysis is desired.

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Acknowledgments

We thank Ilona Urbarova and Jack-Ansgar Bruun for fruitful discussions, as well as Prof Jon Florholmen and Rasmus Goll for supplying colon biopsies. Our work was supported by a grant from the North Norway Regional Health Authorities.

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Correspondence to Terkel Hansen .

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Schniers, A., Pasing, Y., Hansen, T. (2019). Lys-C/Trypsin Tandem-Digestion Protocol for Gel-Free Proteomic Analysis of Colon Biopsies. In: Brun, V., Couté, Y. (eds) Proteomics for Biomarker Discovery. Methods in Molecular Biology, vol 1959. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-9164-8_7

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  • DOI: https://doi.org/10.1007/978-1-4939-9164-8_7

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  • Publisher Name: Humana Press, New York, NY

  • Print ISBN: 978-1-4939-9163-1

  • Online ISBN: 978-1-4939-9164-8

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