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Axons Guided by Insulin Receptor in Drosophila Visual System

Science  18 Apr 2003:
Vol. 300, Issue 5618, pp. 502-505
DOI: 10.1126/science.1081203

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Abstract

Insulin receptors are abundant in the central nervous system, but their roles remain elusive. Here we show that the insulin receptor functions in axon guidance. The Drosophila insulin receptor (DInR) is required for photoreceptor-cell (R-cell) axons to find their way from the retina to the brain during development of the visual system. DInR functions as a guidance receptor for the adapter protein Dock/Nck. This function is independent of Chico, the Drosophila insulin receptor substrate (IRS) homolog.

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