Fig. 3: Cryo-EM structure of the 7TM-bound ADGRL3 HormR/GAIN domains at 3.9 Å resolution.

a The cryo-EM structure and density map of HormR/GAIN domains of ADGRL3 bound to sAB LK3. HormR domain is colored purple, GAIN - green, TA - magenta, and heavy and light chains of LK3 - yellow. b Close-up view of the intact TA buried within the GAIN domain in the holoreceptor. Side chains of the TA peptide are shown as sticks. c and d Glycosylation of conserved sites N843 (c) and N814 (d) at the membrane-facing side of the GAIN domain modeled into the density map of HormR/GAIN domains.