Abstract
Immunofluorescence microscopy is an invaluable tool for the study of biological processes at the cellular level. While the localization of surface-exposed antigens can easily be determined using fluorescent antibodies, localization of intracellular antigens requires permeabilization of the bacterial cell wall and membrane. Here, we describe an immunofluorescence protocol tailored specifically for Streptococcus pyogenes, applying the phage lysin PlyC for cell wall permeabilization. This protocol allows a high level of morphological preservation, suitable for high-resolution microscopy. With slight modification, this protocol could also be used for other Gram-positive pathogens.
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Acknowledgments
I thank Vincent A. Fischetti for his support and insight. I thank Eleana Sphicas from the Rockefeller University Electron Microscopy Resource Center for the capturing of EM images. I thank Alison North from the Rockefeller University Bio-Imaging Resource Center for her advice. This work was supported by U.S. Public Health Service Grant AI11822 to Vincent A. Fischetti.
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Raz, A. (2017). Detection of Intracellular Proteins by High-Resolution Immunofluorescence Microscopy in Streptococcus pyogenes . In: Nordenfelt, P., Collin, M. (eds) Bacterial Pathogenesis. Methods in Molecular Biology, vol 1535. Humana Press, New York, NY. https://doi.org/10.1007/978-1-4939-6673-8_14
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DOI: https://doi.org/10.1007/978-1-4939-6673-8_14
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