Journal: Science Advances
Article Title: Structure of S1PR2–heterotrimeric G 13 signaling complex
doi: 10.1126/sciadv.abn0067
Figure Lengend Snippet: ( A ) Dose-response curves of S1PR2 and S1PR3 for the TGFα shedding assay using FTY720-P. The chemical structure of FTY720-P is shown. Data are means ± SD ( n = 3). The membrane expression of S1PRs is shown in figs. S4A and S6C. EV, empty vector. ( B ) JTE-013 reduces the FTY720-P–induced activation of S1PR2 but not S1PR3. The chemical structure of JTE-013 is shown. Data are means ± SD ( n = 3). ( C ) Structural comparisons among S1PRs imply the unique roles of residue F274 of S1PR2. The residues are shown in sticks. ( D ) The sequence alignment of S1PR2-TM7 from different species. The conserved residues are highlighted. The residue F274 is indicated by a star. ( E and G ) Mutagenesis analysis of S1PR2 F274I for S1P (E) and FTY720-P (G). The representative dose-response curves from same-day experiment are shown. Data are means ± SD ( n = 3). ( F and H ) RAi of each varient for S1P (F) and FTY720-P (H). Each LogRAi plot denotes a single measurement from a dose-response experiment. Data are means ± SD ( n = 3 to 5 independent experiments). * P < 0.05, *** P < 0.001, and **** P < 0.0001; mutant versus wild-type values according to one-way ANOVA with Dunnett’s multiple comparison test.
Article Snippet: The ligand S1P (Tocris) or FTY720 (S)-phosphate (FTY720-P, Echelon) was serially diluted in HBSS supplemented with 5 mM Hepes (pH 7.4) and 0.01% fatty acid–free bovine serum albumin (BSA; GoldBio) to prepare 10× stock solutions.
Techniques: Expressing, Plasmid Preparation, Activation Assay, Sequencing, Mutagenesis