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Data availability
Cryo-EM maps and structure coordinates have been deposited in the Electron Microscopy Data Bank (EMDB) and Protein Data Bank (PDB) with accession codes EMD-60643 and 9IJS for the apo GPR52–βarr1–scFv30 complex; EMD-60642 and 9IJR for the c17–GPR52–βarr1–scFv30 complex.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (W2412030 to F.X.), Shanghai DFYC Program (to F.X.), Shanghai Chenguang Program (23CGA79 to X.L.), and Innovative research team of high-level local universities in Shanghai. The cryo-EM data were collected at the Bio-EM Facility, ShanghaiTech University, with the assistance of Li Wang, Dandan Liu, and Yuan Pei, and other staff members. We thank Bingjie Zhang and Wenqing Shui for insightful discussions on phosphorylation. We also thank the staff members of the Cell Expression, Assay, Cloning, and Purification Core Facilities of iHuman Institute for their support.
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X.L. performed cryo-EM sample preparation, data collection, structure determination and HTRF assay. X.W. conducted the piggyBac-based TANGO GFP assay and imaging. N.P. conducted the relevant work on the truncated complex. L.W. performed arrestin recruitment assay. Z.Z. assisted with EM data processing. C.L. synthesized the GPR52 agonist. Y.Y. assisted with APJR-related assays. J.L. performed protein expression. Q.T. assisted with the arrestin recruitment assay. Q.S. assisted with EM data collection. F.X. conceived the project, designed and supervised experiments. X.L. and F.X. wrote the manuscript with the input from all authors.
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Lin, X., Wei, X., Pu, N. et al. Constitutive arrestin recruitment by orphan GPR52 via an atypical binding mode. Cell Res (2025). https://doi.org/10.1038/s41422-025-01165-w
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DOI: https://doi.org/10.1038/s41422-025-01165-w