Research Article

Bioimaging of Nucleolin Aptamer-Containing 5-(N-benzylcarboxyamide)-2′-deoxyuridine More Capable of Specific Binding to Targets in Cancer Cells

Figure 5

Correlation between the structure and activity of the 5-BzdU-modified-AS1411. The position and structure of the chemical modification in numbers 12, 29, and 26 and the original sequence of AS1411 were drawn in G-quadruplex structure that normally formed by dimerization of AS1411 aptamers to bind to nucleolin protein.