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. 2012 May 29;7(5):e37939. doi: 10.1371/journal.pone.0037939

Table 1. Binding parameters for poly(U)•poly(A)*poly(U) triplex-alkaloid complexation obtained from McGhee-von Hippel analysis of the Scatchard plot from the spectrophotometric and fluorimetric titration data at 25°Ca.

Alkaloid Absorbance Fluorescence
Ki/105 M−1 n Ki/105 M−1 n
BC 2.88±0.02 4.3 3.9±0.05 4.1
BC1 8.65±0.34 4.2 9.5±0.10 4.0
BC2 39.87±0.41 4.3 47.0±0.56 4.3
a

Average of four determinations in each case. Ki is the intrinsic binding constant to an isolated binding site and ‘n’ represents the number of excluded sites.