RSC - Chem. Sci. latest articles

Given the powerful regulation roles of chemical modification networks on protein structures and functions, it is of vital importance to acquire the spatiotemporal chemical modification pattern information in a protein-specific fashion, which is by far a highly challenging task. Herein, we design a localized DNA automaton, equipped with an anticoding-coding sequential propagation algorithm, for in situ visualization of a given protein subtype with two chemical modifications of interest on cell surface. The automaton is composed of three probes respectively for the protein and two types of modifications. Once being anchored on cell surface and triggered, the automaton performs sequential protein-localized, DNA hybridization-based computations on the proximity status of each modification type with the protein, and contracts the set of close proximity information into a single fluorescence signal turn-on using the designed algorithm. The modular and scalable features of the automaton enable its operation in scaled-down versions for protein-specific identification of one given modification. Thus this work opens up the possibility of using automata for revealing complex regulation mechanisms of protein posttranslational modifications. This article is Open Access Please wait while we load your content... Something went wrong. Try again?



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