Volume 42, Issue 31 pp. 3626-3629
Communication

Chemistry in Living Cells: Detection of Active Proteasomes by a Two-Step Labeling Strategy

Huib Ovaa Dr.

Huib Ovaa Dr.

Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston MA 02115, USA

These authors contributed equally.

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Paul F. van Swieten

Paul F. van Swieten

Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2300 RA Leiden, The Netherlands, Fax: (+31) 71-527-4307

These authors contributed equally.

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Benedikt M. Kessler Dr.

Benedikt M. Kessler Dr.

Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston MA 02115, USA

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Michiel A. Leeuwenburgh Dr.

Michiel A. Leeuwenburgh Dr.

Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2300 RA Leiden, The Netherlands, Fax: (+31) 71-527-4307

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Edda Fiebiger Dr.

Edda Fiebiger Dr.

Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston MA 02115, USA

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Adrianus M. C. H. van den Nieuwendijk

Adrianus M. C. H. van den Nieuwendijk

Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2300 RA Leiden, The Netherlands, Fax: (+31) 71-527-4307

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Paul J. Galardy Dr.

Paul J. Galardy Dr.

Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston MA 02115, USA

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Gijsbert A. van der Marel Dr.

Gijsbert A. van der Marel Dr.

Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2300 RA Leiden, The Netherlands, Fax: (+31) 71-527-4307

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Hidde L. Ploegh Prof. Dr.

Hidde L. Ploegh Prof. Dr.

Department of Pathology, Harvard Medical School, 200 Longwood Avenue, Boston MA 02115, USA

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Herman S. Overkleeft Prof. Dr.

Herman S. Overkleeft Prof. Dr.

Gorlaeus Laboratories, Leiden University, Einsteinweg 55, 2300 RA Leiden, The Netherlands, Fax: (+31) 71-527-4307

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First published: 07 August 2003
Citations: 145

This work is supported by NIH Grant GM 62502 to H.L.P and NIH Training Grant T32 HL07574 to P.J.G. E.F. is supported by the APART program of the Austrian Academy of Sciences. H.O., P.F.S., and H.S.O. are financially supported by the Netherlands Organization for Scientific Research (NWO).

Graphical Abstract

In vivo targeting of the proteasome: Probe 1 is a cell-permeable irreversible inhibitor that alkylates the active-site residues of the proteasome in a Michael fashion. After cell lysis, a biotin moiety is introduced by Staudinger ligation to yield construct 2. This strategy allows activity profiling of the catalytic activities of the proteasome in vivo.

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