bioRxivBiophysics
A spontaneously blinking fluorescent protein for simple single laser super-resolution live cell imaging
Y. Arai, H. Takauchi, Y. Ogami, S. Fujiwara, M. Nakano, T. Nagai
Abstract
Super-resolution imaging techniques based on single molecule localization microscopy (SMLM) broke the diffraction limit of optical microscopy in living samples with the aid of photoswitchable fluorescent probes and intricate microscopy systems. Here, we developed a fluorescent protein, SPOON, which can be switched-off by excitation light illumination and switched-on by thermally-induced dehydration resulting in an apparent spontaneous blinking behavior. This unique property of SPOON provides a simple SMLM-based super-resolution imaging platform which requires only a single 488 nm laser.
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