Binding of microtubule-associated protein 1B to LIS1 affects the interaction between dynein and LIS1
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2005-07-15Metadata
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Jiménez Mateos, Eva
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Binding of microtubule-associated protein 1B to LIS1 affects the interaction between dynein and LIS1
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For neuronal migration to occur, the cell must undergo morphological changes that require modifications of the cytoskeleton. Several different MAPs (microtubule-associated proteins) or actin-binding proteins are proposed to be involved in the migration of neurons. Therefore we have specifically analysed how two members of the MAP family, MAP1B and LIS1 (lissencephaly-related protein 1), interact with one another and participate in neuronal migration. Our results indicate that, in hippocampal neurons, MAP I B and LIS I co-localize, associate and interact with each another. The interaction between these two MAPs is regulated by the phosphorylation of MAP1B. Furthermore, this interaction interferes with the association between LIS I and the microtubule-dependent molecular motor, dynein. Clearly, the differential binding of these cytoskeletal proteins could regulate the functions attributed to the LIS I-dynein complex, including those related to extension of the neural processes necessary for neuronal migration.
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BIOCHEMICAL JOURNAL 389: 333-341 Part 2, JUL 15 2005
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