Sequence and secondary structure of the MMP2 aptamer. (a) Sequence of the 40-nucleotide random region (N40, shaded) and of the two constant regions flanking the random region. (b) The hairpin-like secondary structure of the aptamer is presented in the lower panel.
Han et al. Nanoscale Research Letters 2014 9:104 doi:10.1186/1556-276X-9-104