7t6t

Structure of the human FPR1-Gi complex with fMLFII

spinqualitylabelsall models 7t6t, resolution 3.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 7t6t is a 5 chain structure with sequence from Bos taurus, Homo, Homo sapiens and Rattus. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.2Å Ligands: FME, PLM Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function GNAI1_HUMAN Guanine nucleotide-binding proteins (G proteins) are involved as modulators or transducers in various transmembrane signaling systems. The G(i) proteins are involved in hormonal regulation of adenylate cyclase: they inhibit the cyclase in response to beta-adrenergic stimuli. The inactive GDP-bound form prevents the association of RGS14 with centrosomes and is required for the translocation of RGS14 from the cytoplasm to the plasma membrane. May play a role in cell division. Publication Abstract from PubMed The formylpeptide receptors (FPRs) mediate pattern recognition of formylated peptides derived from invading pathogens or mitochondria from dead host cells. They can also sense other structurally distinct native peptides and even lipid mediators to either promote or resolve inflammation. Pharmacological targeting of FPRs represents a novel therapeutic approach in treating inflammatory diseases. However, the molecular mechanisms underlying FPR ligand recognition are elusive. We report cryo-EM structures of G(i)-coupled FPR1 and FPR2 bound to a formylpeptide and G(i)-coupled FPR2 bound to two synthetic peptide and small-molecule agonists. Together with mutagenesis data, our structures reveal the molecular mechanism of formylpeptide recognition by FPRs and structural variations of FPR1 and FPR2 leading to their different ligand preferences. Structural analysis also suggests that diverse FPR agonists sample a conserved activation chamber at the bottom of ligand-binding pockets to activate FPRs. Our results provide a basis for rational drug design on FPRs. Molecular recognition of formylpeptides and diverse agonists by the formylpeptide receptors FPR1 and FPR2.,Zhuang Y, Wang L, Guo J, Sun D, Wang Y, Liu W, Xu HE, Zhang C Nat Commun. 2022 Feb 25;13(1):1054. doi: 10.1038/s41467-022-28586-0. PMID:35217703 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Transducin 3D structures

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