| Structural highlights
Function
AGRL3_MOUSE Plays a role in cell-cell adhesion and neuron guidance via its interactions with FLRT2 and FLRT3 that are expressed at the surface of adjacent cells (PubMed:22405201, PubMed:25728924, PubMed:26235031). Plays a role in the development of glutamatergic synapses in the cortex (PubMed:22405201, PubMed:24739570). Important in determining the connectivity rates between the principal neurons in the cortex (PubMed:24739570).[1] [2] [3] [4]
Publication Abstract from PubMed
Latrophilins (LPHNs) are adhesion-like G-protein-coupled receptors implicated in attention-deficit/hyperactivity disorder. Recently, LPHN3 was found to regulate excitatory synapse number through trans interactions with fibronectin leucine-rich repeat transmembrane 3 (FLRT3). By isothermal titration calorimetry, we determined that only the olfactomedin (OLF) domain of LPHN3 is necessary for FLRT3 association. By multi-crystal native single-wavelength anomalous diffraction phasing, we determined the crystal structure of the OLF domain. This structure is a five-bladed beta propeller with a Ca2+ ion bound in the central pore, which is capped by a mobile loop that allows the ion to exchange with the solvent. The crystal structure of the OLF/FLRT3 complex shows that LPHN3-OLF in the closed state binds with high affinity to the concave face of FLRT3-LRR with a combination of hydrophobic and charged residues. Our study provides structural and functional insights into the molecular mechanism underlying the contribution of LPHN3/FLRT3 to the development of glutamatergic synapses.
Structural and Mechanistic Insights into the Latrophilin3-FLRT3 Complex that Mediates Glutamatergic Synapse Development.,Ranaivoson FM, Liu Q, Martini F, Bergami F, von Daake S, Li S, Lee D, Demeler B, Hendrickson WA, Comoletti D Structure. 2015 Jul 28. pii: S0969-2126(15)00275-0. doi:, 10.1016/j.str.2015.06.022. PMID:26235031[5]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ O'Sullivan ML, de Wit J, Savas JN, Comoletti D, Otto-Hitt S, Yates JR 3rd, Ghosh A. FLRT proteins are endogenous latrophilin ligands and regulate excitatory synapse development. Neuron. 2012 Mar 8;73(5):903-10. doi: 10.1016/j.neuron.2012.01.018. PMID:22405201 doi:http://dx.doi.org/10.1016/j.neuron.2012.01.018
- ↑ O'Sullivan ML, Martini F, von Daake S, Comoletti D, Ghosh A. LPHN3, a presynaptic adhesion-GPCR implicated in ADHD, regulates the strength of neocortical layer 2/3 synaptic input to layer 5. Neural Dev. 2014 Apr 17;9:7. doi: 10.1186/1749-8104-9-7. PMID:24739570 doi:http://dx.doi.org/10.1186/1749-8104-9-7
- ↑ Jackson VA, Del Toro D, Carrasquero M, Roversi P, Harlos K, Klein R, Seiradake E. Structural Basis of Latrophilin-FLRT Interaction. Structure. 2015 Feb 17. pii: S0969-2126(15)00037-4. doi:, 10.1016/j.str.2015.01.013. PMID:25728924 doi:http://dx.doi.org/10.1016/j.str.2015.01.013
- ↑ Ranaivoson FM, Liu Q, Martini F, Bergami F, von Daake S, Li S, Lee D, Demeler B, Hendrickson WA, Comoletti D. Structural and Mechanistic Insights into the Latrophilin3-FLRT3 Complex that Mediates Glutamatergic Synapse Development. Structure. 2015 Jul 28. pii: S0969-2126(15)00275-0. doi:, 10.1016/j.str.2015.06.022. PMID:26235031 doi:http://dx.doi.org/10.1016/j.str.2015.06.022
- ↑ Ranaivoson FM, Liu Q, Martini F, Bergami F, von Daake S, Li S, Lee D, Demeler B, Hendrickson WA, Comoletti D. Structural and Mechanistic Insights into the Latrophilin3-FLRT3 Complex that Mediates Glutamatergic Synapse Development. Structure. 2015 Jul 28. pii: S0969-2126(15)00275-0. doi:, 10.1016/j.str.2015.06.022. PMID:26235031 doi:http://dx.doi.org/10.1016/j.str.2015.06.022
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