Figure 4.

DNA corona phase does not participate in the dehydrogenase-mimicking reaction. (a) Dependence of the single-catalyst turnover rate $\nu$ on [RZ] for the nanozyme catalyzed reaction in a 50 mM pH 7.4 sodium phosphate buffer at 25 °C. 195 bare AuNPs and 167 DNA@AuNPs were measured; [NH₂OH] = 1 mM. Inset: chemical equation of the N-deoxygenation RZ reduction. (b) Dependence of the reactivity fluctuation rates on the turnover rates of 5 nm AuNP and AuNP@DNA in RZ reduction.