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. Author manuscript; available in PMC: 2011 Jun 14.
Published in final edited form as: Chem Commun (Camb). 2010 Apr 20;46(22):3896–3898. doi: 10.1039/b926910j

Fig. 2.

Fig. 2

Selectivity comparison of both DNAzyme catalytic beacons. The fluorescent enhancement (F/F0) was measured at 6 min after the addition of each metal ion to the 8–17 DNAzyme sensor (a) and the GR-5 DNAzyme sensor (b). All experiments have been carried out in 50 mM NaHEPES, 50 mM NaCl at pH 7.2 for the 8–17 sensor and 50 mM NaHEPES, 50 mM NaCl and 5 mM MgCl2 at pH 7.26 for the GR-5 sensor. Inset: fluorescent response of both Pb2+ sensors in the presence of other eight metal ions.