Reference: Cutforth T and Rubin GM (1994) Mutations in Hsp83 and cdc37 impair signaling by the sevenless receptor tyrosine kinase in Drosophila. Cell 77(7):1027-36

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Abstract


A highly conserved signal cascade functions subsequent to receptor tyrosine kinase activation. Signaling by the sevenless receptor, required for differentiation of the R7 photoreceptor neuron in Drosophila, is reduced by mutations in E(sev)3A and E(sev)3B. We show here that E(sev)3A is a member of the Hsp90 family of stress proteins and that E(sev)3B encodes a homolog of the cell cycle control protein Cdc37 from S. cerevisiae. Mutations in E(sev)3B also dominantly enhance mutations in Dmcdc2, the gene encoding the p34 protein kinase that regulates the G2/M transition. Together, these data support a role for Hsp90 proteins in tyrosine kinase regulation and suggest that signals promoting neuronal differentiation may involve cell cycle control.

Reference Type
Comparative Study | Journal Article | Research Support, Non-U.S. Gov't
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Cutforth T, Rubin GM
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