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. Author manuscript; available in PMC: 2013 Jun 5.
Published in final edited form as: Biochemistry. 2012 Mar 9;51(11):2331–2347. doi: 10.1021/bi201657k

Table 7.

The IC50 values of ligand determined from FRET mediated competition binding assay.

Ligands Linker length Structure of the linker
(-x-, from Scheme 1 and
Scheme 2)
IC50(nM)
Fluorescin-labeled-
TAT peptide
NA NA 86 ± 9
DPA51 7 graphic file with name nihms-362741-t0024.jpg 77 ± 27
DPA52 7 graphic file with name nihms-362741-t0025.jpg 60 ± 8
DPA65 7 graphic file with name nihms-362741-t0026.jpg 47 ± 6
DPA53 8 graphic file with name nihms-362741-t0027.jpg 56 ± 6
DPA54 8 graphic file with name nihms-362741-t0028.jpg 58 ± 6
DPA55 10 graphic file with name nihms-362741-t0029.jpg 80 ± 9
DPA56 10 graphic file with name nihms-362741-t0030.jpg 59 ± 11
DPA58 16 graphic file with name nihms-362741-t0031.jpg 61 ± 13
DPA60 20 graphic file with name nihms-362741-t0032.jpg 67 ± 9
Neomycin NA NA 713 ± 165