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. Author manuscript; available in PMC: 2014 Jun 25.
Published in final edited form as: Pulm Pharmacol Ther. 2012 Nov 12;26(2):229–238. doi: 10.1016/j.pupt.2012.11.001

Table 2.

Comparison of the affinities (Kis) and functional potencies (cGMP generation; EC50s and Emaxs) of PL-3994, hANP and hBNP for hNPR-A, hNPR-B and hNPR-C (expressed in HEK cell lines). Results are given as the mean ± SEM.

Compound hNPR-A hNPR-B hNPR-C



Binding Function (cGMP) Function (cGMP) Binding




Ki (nm) (n) EC50 (nm) Emax (% hANP) (n) EC50 (nm) Emax (% hCNP) (n) Ki (nm) (n)
PL-3994 1 ± 0.2 (45) 2 ± 0.6 95 ± 1 (57) Not calculable 1 ± 0.5 (8) 7 ± 0.6 (4)
hANP 0.05 ± 0.01 (6) 0.4 ± 0.04 100 ± 0 (64) Not calculable 6 ± 0.8 (5) 0.05 ± 0.03 (5)
hBNP 3 ± 1 (4) 2 ± 0.6 96 ± 2 (11) Not calculable 9 ± 1 (7) 0.7 (2)