Figure 2. Binding of peptides at PTHR1.
Binding to PTHR1 was assessed using cell membrane preparations derived from a HEK-293 cell line stably transfected to express human PTHR1. Experiments were carried out in the presence of GTPγS (10−5 M) using 125I-PTH(1–34) as a tracer radioligand. Binding values are reported in Table 1. Data are presented as means (± SEM) of three experiments, with each condition assessed in duplicate in each experiment. Curves represent fitting of a sigmoidal dose response with variable slope model to the data.