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Nano Convergence
Fig. 6 | Nano Convergence

Fig. 6

From: Self-assembled, hemin-functionalized peptide nanotubes: an innovative strategy for detecting glutathione and glucose molecules with peroxidase-like activity

Fig. 6

a Schematic representation of colorimetric GSH and Cys detection or discrimination using hemin-PNT-catalyzed reactions. b UV‒vis spectra of TMB + H2O2 + hemin-PNTs in the presence of various concentrations of GSH and Cys (0–30 μM). c A dose‒response curve for the detection of GSH and Cys with hemin-PNTs. d The linear response of GSH and Cys. e The linear response of Cys over the concentration range of 0.1 μM to 1 μM. f Monitoring the absorbance at 652 nm allows for the selective detection of GSH and Cys. The value of A is defined as A0 − AI, and A0 and AI represent the TMB + H2O2 + hemin-PNT system with or without GSH and Cys, respectively. Data represent means ± SDs. (n = 3)

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