Abstract
The molecular dynamics and protein interactions in living cells remain poorly understood despite their importance to several cellular processes. RNA molecules, for example, play a major role in many processes, from encoding and regulating gene expression to catalyzing biological reactions. Alterations of the metabolism of RNAs and RNA-binding proteins are involved in neurodegenerative diseases, such as ALS in neuronal cells. In particular, the connection between biomolecular dynamic processes and cellular function/organization is still unclear.Here, we propose a new class of Fluorescence Fluctuation Spectroscopy (FFS) techniques performed with a novel single-photon-avalanche-diode (SPAD) array detector to better decipher molecular dynamics, interactions and structural changes directly in living cells with microsecond time resolution.
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