Extended Data Fig. 3: CryoEM images and data-processing of MRGPRX2-Gq-Cortistatin-14 and MRGPRX2-Gi1-Cortistatin-14 complex.
From: Structure, function and pharmacology of human itch GPCRs
a, b, Representative motion corrected cryo-EM micrograph (scale bar, 100 nm) of MRGPRX2 G-protein cortistatin-14 (C14) particles imaged at a nominal 45k x magnification and representative two-dimensional class averages. The experiment was repeated three times with similar result. The exact number of movies and particles used for each complex are shown in the flow chart. c, d, Flow chart of cryo-EM data processing. GSFSC plot of auto-masked final map (black) and map-to-model real-space cross correlation (red) as calculated form phenix.mtriage. e, f, Viewing direction distribution and local resolution estimation heat maps. g, h, Local cryo-EM density maps of TM1-7, Cortistatin-14 ligand, α5 and α N helix of respective G-protein. Also shown inset are residues W151 and F82 of the b-subunit (blue).
