Ultrasensitive Detection of Lysozyme upon Conformational Change of DNA Duplex

Figure 2

(a) Testing the dsDNA by agarose gel electrophoresis before lysozyme sensing. Lane 1: DNA aptamer (ssDNA); Lane 2: complementary DNA (cDNA); Lane 3: double-stranded DNA (dsDNA); (b) photograph depicting visual color change of AuNPs when interacting with dsDNA and ssDNA upon exposure to a high electrolytic environment; (c) UV-Vis spectrum of respective samples.

(a)

(b)

(c)