Correction: A fluorescent aptasensor for ATP based on functional DNAzyme/walker and terminal deoxynucleotidyl transferase-assisted formation of DNA-AgNCs

Abstract

Correction for ‘A fluorescent aptasensor for ATP based on functional DNAzyme/walker and terminal deoxynucleotidyl transferase-assisted formation of DNA-AgNCs’ by Shixin Cai et al., Analyst, 2023, 148, 799–805, https://doi.org/10.1039/D2AN02006H.

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The authors regret that incorrect versions of Fig. 2–4 were published. The correct figures and the corresponding figure legends are as follows:

Fig. 2 (A) PAGE image for verification of the elongation of the S1 strand. Lane M: 20 bp DNA marker; lane 1: 1 μM S1 before elongation; lane 2: 1 μM S1 elongated by 280 U mL⁻¹ TDT (elongated S1). (B) TEM image of DNA-AgNCs. (C) TEM image of Fe₃O₄@Au-AgNCs. (D) Fluorescence excitation spectrum (red) and emission spectrum (black) of Fe₃O₄@Au-AgNCs.

Fig. 3 Verification of the feasibility of the fluorescent aptasensor. (A) PAGE image for verification of the change of strands modified on Fe₃O₄@Au. Lane M: 20 bp DNA marker; lane 1: 1 μM S1; lane 2: 1 μM S2; lane 3: 0.5 μM S3; lane 4: the DNA strands released from Fe₃O₄@Au in the presence of 10 μM ATP; and lane 5: the DNA strands released from Fe₃O₄@Au in the absence of ATP. (B) Fluorescence emission spectra obtained under different conditions: Fe₃O₄@Au (black), Fe₃O₄@Au-poly(C) (red), Fe₃O₄@Au-AgNCs (blue) and Fe₃O₄@Au-AgNCs + 1 μM ATP (green).

Fig. 4 (A) The fluorescence emission spectra of the detection system recorded in the presence of different concentrations of ATP; (B) the relationship between the fluorescence intensity and the ATP concentration. Inset shows the linear relationship.

The Royal Society of Chemistry apologises for these errors and any consequent inconvenience to authors and readers.

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