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Figure 1 | Nanoscale Research Letters

Figure 1

From: DNA-directed immobilization of horseradish peroxidase onto porous SiO2 optical transducers

Figure 1

Conjugation of enzymes to a porous SiO 2 surface using DDI approach. (a) A schematic representation of the synthetic steps required for enzyme immobilization onto PSiO2 through DDI approach. The porous scaffold is first modified with GPTS to graft the amine-modified capture strand (aD1) that serves as an anchor for the following hybridization process. (b) Results of fluorescence labeling experiments to confirm the specificity of the DDI method. Complete bioconjugation; aD1 is attached to the silane-modified porous surface followed by hybridization of the complementary strand labeled with TAMRA fluorophore. (c) Control experiment; no GPTS is used (silanization step).

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