MUTATIONS IN HSP83 AND CDC37 IMPAIR SIGNALING BY THE SEVENLESS RECEPTOR TYROSINE KINASE IN DROSOPHILA

被引：252

作者：

CUTFORTH, T ^{[1
]}

RUBIN, GM ^{[1
]}

机构：

[1] UNIV CALIF BERKELEY, DEPT MOLEC & CELL BIOL, BERKELEY, CA 94720 USA

来源：

CELL | 1994年 / 77卷 / 07期

关键词：

D O I：

10.1016/0092-8674(94)90442-1

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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)SB. We show here that E(sev)SA is a member of the HspSO family of stress proteins and that E(sev)SB 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 HspSO proteins in tyrosine kinase regulation and suggest that signals promoting neuronal differentiation may involve cell cycle control.

引用

页码：1027 / 1036

页数：10

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