FIG 5
Characterization of P393GX LBD. (A) Corepressor binding assay of P393GX by fluorescence anisotropy showing saturating-binding curves and dissociation constant (Kd) of the P393GX binding to corepressor peptide in the absence and presence of T3. Error bars indicate mean ± SEM (n = 5). (B) Thermal stability (melting temperature) of P393GX in the apo form, with T3, with SMRT peptide, and with both T3 and SMRT peptide. (C) Purification of P393GX by GST and ion-exchange chromatography, illustrated via SDS-PAGE. (D) A 2F0-Fc electron density map contoured at 1.0 σ around the binding pocket of the protein, clearly showing T3 and the residues conforming the ligand binding pocket (structure deposited with PDB ID 7QDT). |