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Purification of Large Cytosolic Proteases for In Vitro Assays: 20S and 26S Proteasomes

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Antigen Processing

Part of the book series: Methods in Molecular Biology™ ((MIMB,volume 960))

Abstract

Proteasomes are the main cytosolic proteases responsible for generating peptides for antigen processing and presentation in the MHC (major histocompatibility complex) class-I pathway. Purified 20S and 26S proteasomes have been widely used to study both specificity and efficiency of antigen processing. Here, we describe the purification of active human 20S and 26S proteasomes from human erythrocytes by DEAE-ion exchange chromatography, ammonium sulfate precipitation, glycerol density gradient centrifugation, and Superose-6 size exclusion chromatography and their characterization using fluorogenic substrates and specific inhibitors.

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Acknowledgments

This work was supported by the Deutsche Forschungsgemeinschaft SFB490, E6 and the Forschungszentrum Immunologie (FZI CF7) of the University Mainz

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Authors and Affiliations

  1. Institute for Immunology, University of Mainz, Mainz, Germany

    Stefan Tenzer, Tobias Hain, Hendrik Berger & Hansjörg Schild

Authors
  1. Stefan Tenzer
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  2. Tobias Hain
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  3. Hendrik Berger
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  4. Hansjörg Schild
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Corresponding author

Correspondence to Stefan Tenzer .

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Editors and Affiliations

  1. Institut National de la Santé et de la Recherche Médicale, Unité 1013, Université Paris Descartes, Faculté de médecine, Paris, France

    Peter van Endert

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Tenzer, S., Hain, T., Berger, H., Schild, H. (2013). Purification of Large Cytosolic Proteases for In Vitro Assays: 20S and 26S Proteasomes. In: van Endert, P. (eds) Antigen Processing. Methods in Molecular Biology™, vol 960. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-218-6_1

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  • DOI: https://doi.org/10.1007/978-1-62703-218-6_1

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  • Publisher Name: Humana Press, Totowa, NJ

  • Print ISBN: 978-1-62703-217-9

  • Online ISBN: 978-1-62703-218-6

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