Extracellular matrix protein implicated in guidance of migrating neurons as well as axons during development, synaptic plasticity as well as neuronal regeneration. Ligand for integrins alpha-8/beta-1, alpha-9/beta-1, alpha-V/beta-3 and alpha-V/beta-6. Homohexamer; disulfide-linked. A homotrimer may be formed in the triple coiled-coil region and may be stabilized by disulfide rings at both ends. Two of such half-hexabrachions may be disulfide linked within the central globule. Interacts with CSPG4. Isoforms are produced in a tissue- and time-specific manner during development. By TGF-beta. The fibrinogen C-terminal domain mediates interaction with CSPG5. N-glycosylated. Belongs to the tenascin family.