Trans-synaptic protein interactions are required for synapse specification and function, and the combination between neuroligin3 and αneurexin1 controls inhibitory synaptic function in a splice isoform- and interneuron-specific manner.
Investigation of synapse development using a single neuron system illuminates how individual neurons specify connectivity with their postsynaptic partners and the central role of the synaptic organizer neurexin in this process.
Presynaptic adhesion molecule PTPσ in the hippocampus regulates postsynaptic NMDA receptor function and behavioral novelty recognition through mechanisms independent of their trans-synaptic binding partners.
Axonal arborisation growth is regulated by dynamic, focal localisations of Neurexin and Neuroligin that provide stability for filopodia, enabling a 'stick and grow'-based mechanism, wholly independent of synapse formation.
A combination of mouse genetics and biochemistry approaches reveals neurexophilin4 (Nxph4) as a context-specific α-neurexin ligand, which regulates Golgi-granule cell inhibitory synapses and motor functions.