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Publication Abstract from PubMed

Latrophilins, receptors for spider venom alpha-latrotoxin, are adhesion type G-protein-coupled receptors with emerging functions in synapse development. The N-terminal region binds the endogenous cell adhesion molecule FLRT, a major regulator of cortical and synapse development. We present crystallographic data for the mouse Latrophilin3 lectin and olfactomedin-like (Olf) domains, thereby revealing the Olf beta-propeller fold and conserved calcium-binding site. We locate the FLRT-Latrophilin binding surfaces by a combination of sequence conservation analysis, point mutagenesis, and surface plasmon resonance experiments. In stripe assays, we show that wild-type Latrophilin3 and its high-affinity interactor FLRT2, but not the binding-impaired mutants we generated, promote HeLa cell adhesion. In contrast, cortical neurons expressing endogenous FLRTs are repelled by wild-type Latrophilin3 and not by the binding-impaired mutant. Taken together, we present molecular level insights into Latrophilin structure, its FLRT-binding mechanism, and a role for Latrophilin and FLRT that goes beyond a simply adhesive interaction.

Structural Basis of Latrophilin-FLRT Interaction.,Jackson VA, Del Toro D, Carrasquero M, Roversi P, Harlos K, Klein R, Seiradake E Structure. 2015 Feb 17. pii: S0969-2126(15)00037-4. doi:, 10.1016/j.str.2015.01.013. PMID:25728924^[2]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.