Tenascin-R
Domain
The EGF-like domains mediate interaction with CNTN1. The fibronectin type-III domains 3-5 mediate interaction with BCAN. The fibronectin type-III domains 1-2 and 7-9 mediate interaction with SCN2B (By similarity).
Function
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 (By similarity).
Involvement in disease
Neurodevelopmental disorder, non-progressive, with spasticity and transient opisthotonus
NEDSTO
An autosomal recessive disorder characterized by delayed motor milestones, delayed walking, speech delay, axial hypotonia, and peripheral spasticity apparent from infancy or early childhood. Affected individuals often show transient opisthotonic posturing in infancy, and later show abnormal involuntary movements. Variably impaired intellectual development, and brain myelination defects are present in some patients.
None
The disease is caused by variants affecting the gene represented in this entry.
Post-translational modifications
Contains N-linked oligosaccharides, O-linked sialylated structures and O-linked chondroitin sulfate glycosaminoglycans. Contains N-linked oligosaccharides with a sulfated carbohydrate structure (By similarity). O-glycosylated on Thr-36 or Thr-37 with a core 1 or possibly core 8 glycan.
Sequence Similarities
Belongs to the tenascin family.
Tissue Specificity
Brain specific.
Cellular localization
- Secreted
- Extracellular space
- Extracellular matrix
Alternative names
Tenascin-R, TN-R, Janusin, Restrictin, TNR