CHL1 interacts with alpha1beta1/alpha2beta1 integrins in cis on the cell surface and promotes intracellular signaling, which stimulates cell migration on extracellular matrix proteins such as collagen-I. The integrin interaction motif, DGEA in the Ig6 domain of CHL1, is necessary to potentiate migration to collagen-I. CHL1 interacts with integrins to mediate radial migration of neural precursors in the development neocortex, and suppresses neuronal branching during migration.
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