Receptor for RTN4, OMG and MAG. Functions as receptor for the sialylated gangliosides GT1b and GM1 (By similarity). Besides, functions as receptor for chondroitin sulfate proteoglycans (By similarity). Can also bind heparin (By similarity). Intracellular signaling cascades are triggered via the coreceptor NGFR. Signaling mediates activation of Rho and downstream reorganization of the actin cytoskeleton. Mediates axonal growth inhibition (By similarity). May play a role in regulating axon regeneration and neuronal plasticity in the adult central nervous system. Plays a role in postnatal brain development. Required for normal axon migration across the brain midline and normal formation of the corpus callosum. Protects motoneurons against apoptosis; protection against apoptosis is probably mediated via interaction with MAG. Acts in conjunction with RTN4 and LINGO1 in regulating neuronal precursor cell motility during cortical development. Like other family members, plays a role in restricting the number dendritic spines and the number of synapses that are formed during brain development (By similarity). Interacts with OMG (By similarity). Homodimer. Interacts with MAG (By similarity). Interacts with RTN4 (By similarity). Interacts with NGFR. Interacts with LINGO1. Interacts with KIAA0319L (By similarity). Interacts with OLFM1; this inhibits interaction with LINGO1 and NGFR (By similarity). Detected along dendrites and axons, close to synapses, but clearly excluded from synapses. N-glycosylated. O-glycosylated. Contains terminal sialic acid groups on its glycan chains. Belongs to the Nogo receptor family. Nerve regrowth: nipped by a no-go - Issue 69 of April 2006