Skip to main content
. Author manuscript; available in PMC: 2008 Mar 31.
Published in final edited form as: Am J Physiol Heart Circ Physiol. 2006 Oct 6;292(2):H984–H993. doi: 10.1152/ajpheart.00776.2006

Fig. 4.

Fig. 4

Effects of increasing concentrations of unlabeled competing ligands, Hpp-Aca-SDKP (A) and Ac-SDKP (B), or excess concentrations (10 μM) of Ac-SDKP, Hpp-Aca-SDKP, SDKP (dehydro), SDK, ET-1, and ANG II (C) on specific 125I-Hpp-Aca-SDKP receptor binding in cultured rat CFs, representing 4 different experiments. Ki, inhibition constant. Note that the inhibitory potencies of these compounds on 125I-Hpp-Aca-SDKP receptor binding were in the order of Hpp-Aca-SDKP ≥ Ac-SDKP > SDK > SDKP (dehydro) and that unrelated peptide ET-1 and ANG II did not displace 125I-Hpp-Aca-SDKP receptor binding in CFs. **P < 0.01 vs. total binding.