Download MendeleyTargeted In Situ Protein Diversification and Intra-organelle Validation in Mammalian Cells.
Erdogan, M., Fabritius, A., Basquin, J., Griesbeck, O.(2020) Cell Chem Biol 27: 610-621.e5
- PubMed: 32142629 Search on PubMed
- DOI: https://doi.org/10.1016/j.chembiol.2020.02.004
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6XWY - PubMed Abstract:
Engineered proteins must be phenotypically selected for function in the appropriate physiological context. Here, we present a versatile approach that allows generating panels of mammalian cells that express diversified heterologous protein libraries in the cytosol or subcellular compartments under stable conditions and in a single-variant-per-cell manner. To this end we adapt CRISPR/Cas9 editing technology to diversify targeted stretches of a protein of interest in situ. We demonstrate the utility of the approach by in situ engineering and intra-lysosome specific selection of an extremely pH-resistant long Stokes shift red fluorescent protein variant. Tailoring properties to specific conditions of cellular sub-compartments or organelles of mammalian cells can be an important asset to optimize various proteins, protein-based tools, and biosensors for distinct functions.
- Tools for Bio-Imaging, Max-Planck-Institut für Neurobiologie, Am Klopferspitz 18, Martinsried 82152, Germany.
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