FlAsH-PALM: super-resolution pointillist imaging with FlAsH-tetracysteine labeling.

Mickaël Lelek 1, * Francesca Di Nunzio 1, * Christophe Zimmer 1, *
* Auteur correspondant
Abstract : Super-resolution light microscopy including pointillist methods based on single molecule localization (e.g., PALM/STORM) allow to image protein structures much smaller than the diffraction limit (200-300 nm). However, commonly used labeling strategies such as antibodies or protein fusions have several important drawbacks, including the risk to alter the function or distribution of the imaged proteins. We recently demonstrated that pointillist imaging can be performed using the alternative labeling technique known as FlAsH, which better preserves protein function, is compatible with live cell imaging, and may help reach single nanometer resolution. We applied FlAsH-PALM to visualize HIV integrase in isolated virions or infected cells, allowing us to obtain sub-diffraction resolution images of this enzyme's spatial distribution and analyze HIV morphology without altering viral replication. The technique should also prove useful to image delicate proteins in intracellular vesicles and organelles at high resolution. Here, we present a detailed protocol in order to facilitate the application of FLAsH-PALM to other proteins and biological structures.
Type de document :
Chapitre d'ouvrage
Andrei I. Ivanov. Exocytosis and Endocytosis, 1174, Springer New York, pp.183-93, 2014, Methods in Molecular Biology, 978-1-4939-0943-8. 〈10.1007/978-1-4939-0944-5_12〉. 〈https://link.springer.com/protocol/10.1007%2F978-1-4939-0944-5_12〉
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Contributeur : Francesca Di Nunzio <>
Soumis le : samedi 10 juin 2017 - 15:24:03
Dernière modification le : jeudi 11 janvier 2018 - 06:22:09

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Mickaël Lelek, Francesca Di Nunzio, Christophe Zimmer. FlAsH-PALM: super-resolution pointillist imaging with FlAsH-tetracysteine labeling.. Andrei I. Ivanov. Exocytosis and Endocytosis, 1174, Springer New York, pp.183-93, 2014, Methods in Molecular Biology, 978-1-4939-0943-8. 〈10.1007/978-1-4939-0944-5_12〉. 〈https://link.springer.com/protocol/10.1007%2F978-1-4939-0944-5_12〉. 〈pasteur-01536156〉

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