TNR Antibody – Rabbit Polyclonal

This gene encodes a member of the tenascin family of extracellular matrix glycoproteins. The encoded protein is restricted to the central nervous system. The protein may play a role in neurite outgrowth, neural cell adhesion and modulation of sodium channel function. It is a constituent of perineuronal nets. [provided by RefSeq, Aug 2013]

TNR: Neural extracellular matrix (ECM) protein involved in interactions with different cells and matrix components. These interactions can influence cellular behavior by either evoking a stable adhesion and differentiation, or repulsion and inhibition of neurite growth. Binding to cell surface gangliosides inhibits RGD-dependent integrin-mediated cell adhesion and results in an inhibition of PTK2/FAK1 (FAK) phosphorylation and cell detachment. Binding to membrane surface sulfatides results in a oligodendrocyte adhesion and differentiation. Interaction with CNTN1 induces a repulsion of neurons and an inhibition of neurite outgrowth. Interacts with SCN2B may play a crucial role in clustering and regulation of activity of sodium channels at nodes of Ranvier. TNR-linked chondroitin sulfate glycosaminoglycans are involved in the interaction with FN1 and mediate inhibition of cell adhesion and neurite outgrowth. The highly regulated addition of sulfated carbohydrate structure may modulate the adhesive properties of TNR over the course of development and during synapse maintenance. Belongs to the tenascin family. 2 isoforms of the human protein are produced by alternative splicing.

Protein type: Secreted; Motility/polarity/chemotaxis; Secreted, signal peptide

Chromosomal Location of Human Ortholog: 1q24

Cellular Component: nucleoplasm; proteinaceous extracellular matrix; cell surface; cytoplasm; extracellular region; nucleus; lipid raft

Biological Process: negative regulation of axon extension involved in regeneration; axon guidance; extracellular matrix organization and biogenesis; synapse organization and biogenesis; neuron adhesion; negative regulation of cell-cell adhesion; cell adhesion; neuromuscular process controlling balance; positive regulation of synaptic transmission, glutamatergic; associative learning; negative regulation of synaptic transmission; telencephalon cell migration; positive regulation of transmission of nerve impulse