Abstract
Gap-43 (B-50, neuromodulin) is a presynaptic protein implicated in axonal growth, neuronal differentiation, plasticity, and regeneration. Its activities are regulated by its dynamic interactions with various neuronal proteins, including actin and brain spectrin. Recently we have shown that Gap-43 co-localizes with an axonal protein DPYSL-3 in primary cortical neurons. In the present study we provide evidence that Gap-43 co-localizes and potentially interacts with microtubule-associated protein MAP-2 in adult and fetal rat brain, as well as in primary neuronal cultures. Our studies suggest that this interaction may be developmentally regulated.
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