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. 2013 Mar 28;8(3):e60475. doi: 10.1371/journal.pone.0060475

Table 3. Affinities of the agonists for the binding site of the receptor labelled by [3H]SQ29,548 in HEK293 cells transiently expressing the WT or the mutant human TP receptors.

Agonist WT Ki, nM±%CV E129V Ki, nM±%CV Affinity ratioa
U46619 169.90±13 16.32±18** 10.4
I-BOP 24.27±18 3.90±21** 6.2
8-isoPGE2 2916±15 547.6±2** 5.3
8-isoPGF 12930±19 2908±11** 4.4

Ki values were obtained by simultaneous analysis of at least 3 independent competition experiments analyzed with GraphPad Prism implemented with the LIGAND model (see Data and statistical analysis).

a

Affinity ratio was calculated as the ratio of the Ki for the WT TP receptor over the Ki of the E129V mutant.

**

p<0.01 vs. WT.