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          Institute: MPI für molekulare Biomedizin     Collection: Jahrbuch 2016 (publ. 2015, arch)     Display Documents



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ID: 717319.0, MPI für molekulare Biomedizin / Jahrbuch 2016 (publ. 2015, arch)
Cell-selective labelling of proteomes in Drosophila melanogaster
Authors:Erdmann, I.; Marter, K.; Kobler, O.; Niehues, S.; Abele, J.; Muller, A.; Bussmann, J.; Storkebaum, E.; Ziv, T.; Thomas, U.; Dieterich, D. C.
Date of Publication (YYYY-MM-DD):2015
Title of Journal:Nat Commun
Volume:6
Start Page:7521
Review Status:Internal review
Audience:Not Specified
Abstract / Description:The specification and adaptability of cells rely on changes in protein composition. Nonetheless, uncovering proteome dynamics with cell-type-specific resolution remains challenging. Here we introduce a strategy for cell-specific analysis of newly synthesized proteomes by combining targeted expression of a mutated methionyl-tRNA synthetase (MetRS) with bioorthogonal or fluorescent non-canonical amino-acid-tagging techniques (BONCAT or FUNCAT). Substituting leucine by glycine within the MetRS-binding pocket (MetRS(LtoG)) enables incorporation of the non-canonical amino acid azidonorleucine (ANL) instead of methionine during translation. Newly synthesized proteins can thus be labelled by coupling the azide group of ANL to alkyne-bearing tags through 'click chemistry'. To test these methods for applicability in vivo, we expressed MetRS(LtoG) cell specifically in Drosophila. FUNCAT and BONCAT reveal ANL incorporation into proteins selectively in cells expressing the mutated enzyme. Cell-type-specific FUNCAT and BONCAT, thus, constitute eligible techniques to study protein synthesis-dependent processes in complex and behaving organisms.
External Publication Status:published
Document Type:Article
Communicated by:Keuker
Affiliations:MPI für molekulare Biomedizin
External Affiliations:Department of Neurochemistry and Molecular Biology, Leibniz Institute for Neurobiology, Magdeburg 39118, Germany. 1] Molecular Neurogenetics Laboratory, Max Planck Institute for Molecular Biomedicine, Munster 48149, Germany [2] Faculty of Medicine, University of Munster, Munster 48149, Germany. Smoler Proteomics Center, Faculty of Biology, Technion, Haifa 32000, Israel. 1] Research Group Neuronal Plasticity and Communication, Institute for Pharmacology and Toxicology, Otto-von-Guericke-University Magdeburg, Magdeburg 39120, Germany [2] Research Group Neuralomics, Leibniz Institute for Neurobiology, Magdeburg 39118, Germany [3] Center for Behavioral Brain Sciences, Magdeburg 39118, Germany.
Identifiers:ISSN:2041-1723 (Electronic) 2041-1723 (Linking) %R 10.1... [ID No:1]
URL:http://www.ncbi.nlm.nih.gov/pubmed/26138272 [ID No:2]
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