Fray, a Drosophila Serine/Threonine Kinase Homologous to Mammalian PASK, Is Required for Axonal Ensheathment

Fray is a serine/threonine kinase expressed by the peripheral glia of Drosophila, whose function is required for normal axonal ensheathment. Null fray mutants die early in larval development and have nerves with severe swelling and axonal defasciculation. The phenotype is associated with a failure o...

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