Abstract
Plasma membrane (PM) proteins are of special interest due to their function in exchanging material and information with the external environment as well as their role in cellular regulation. In quantitative proteomic studies PM proteins are underrepresented mostly because they constitute only small percent of all membrane proteins. Strong demand is placed on plasma membrane enrichment methods. For decades two-phase partitioning Dextran T500/PEG 3350 isolation protocols were applied for many different animal and plant species and also a variety of tissue types. The typical quantity of material used in the enrichment protocols is 10–30 g of fresh weight. The main difficulty of working with in vitro cultivated plants is the low amount of material, especially when roots are examined. In addition, roots are frequently characterized by low protein concentrations. Our protocol established for roots of in vitro cultivated potato plants is adjusted to amounts of fresh weight not exceeding 7.5 g and allows studying the plasma membrane proteome by LC-MS.
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Jozefowicz, A.M., Matros, A., Witzel, K., Mock, HP. (2018). Mini-Scale Isolation and Preparation of Plasma Membrane Proteins from Potato Roots for LC/MS Analysis. In: Mock, HP., Matros, A., Witzel, K. (eds) Plant Membrane Proteomics. Methods in Molecular Biology, vol 1696. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-7411-5_13
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DOI: https://doi.org/10.1007/978-1-4939-7411-5_13
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Publisher Name: Humana Press, New York, NY
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