Fig. 2 Schematic illustration of multi-enzyme cascade reaction systems based on the DNA hydrogel[24]:(A) preparation of the DNA hydrogel by TdT-generated X-shaped polymers(X-DNA-An and X-DNA-Tn),(B) illustration of X-shaped polymers incorporated with DNAzyme sequences forming peroxidase-mimicking DNAzyme hydrogel, the bienzyme cascade, and the trienzyme cascade,(C) activation of the β-gal/GOx/DNAzyme cascade. Copyright 2016, ACS
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