PMID- 8103929 OWN - NLM STAT- MEDLINE DCOM- 19931012 LR - 20211203 IS - 0962-8436 (Print) IS - 0962-8436 (Linking) VI - 340 IP - 1293 DP - 1993 Jun 29 TI - Genetic dissection of signal transduction mediated by the sevenless receptor tyrosine kinase in Drosophila. PG - 273-8 AB - The specification of the R7 photoreceptor cell fate in the developing eye of Drosophila depends on the local activation of the sevenless (Sev) receptor tyrosine kinase by Boss, a protein expressed on the membrane of the neighbouring R8 cell. Constitutive activation of the Sev receptor results in a dosage-dependent increase in the number of R7 cells per ommatidium. Genetic screens have been used to identify mutations that alter the efficiency of signal transduction. Subsequent molecular characterization of the corresponding genes has led to the identification of a number of proteins involved in transducing the signal from the receptor to the nucleus. In contrast to the receptor and its ligand, these components are shared between different signal transduction pathways not only in Drosophila but are also homologous to components involved in signal transduction in other organisms. FAU - Hafen, E AU - Hafen E AD - Zoologisches Institut, Universitat Zurich, Switzerland. FAU - Dickson, B AU - Dickson B FAU - Brunner, T AU - Brunner T FAU - Raabe, T AU - Raabe T LA - eng PT - Comparative Study PT - Journal Article PT - Review PL - England TA - Philos Trans R Soc Lond B Biol Sci JT - Philosophical transactions of the Royal Society of London. Series B, Biological sciences JID - 7503623 RN - 0 (Drosophila Proteins) RN - 0 (Eye Proteins) RN - 0 (Membrane Glycoproteins) RN - 0 (Proto-Oncogene Proteins) RN - 0 (Receptors, Cell Surface) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (sev protein, Drosophila) RN - EC 2.7.11.1 (Protein Serine-Threonine Kinases) RN - EC 2.7.11.1 (Proto-Oncogene Proteins c-raf) SB - IM MH - Animals MH - Caenorhabditis elegans/physiology MH - Drosophila/enzymology/*physiology MH - *Drosophila Proteins MH - Eye Proteins/*metabolism MH - Genes, Recessive MH - Membrane Glycoproteins/*metabolism MH - Mutation MH - Photoreceptor Cells/physiology MH - Protein Serine-Threonine Kinases/metabolism MH - Protein-Tyrosine Kinases/*metabolism MH - Proto-Oncogene Proteins/metabolism MH - Proto-Oncogene Proteins c-raf MH - *Receptor Protein-Tyrosine Kinases MH - Receptors, Cell Surface/*metabolism MH - *Signal Transduction MH - Species Specificity MH - Vertebrates/physiology RF - 52 EDAT- 1993/06/29 00:00 MHDA- 1993/06/29 00:01 CRDT- 1993/06/29 00:00 PHST- 1993/06/29 00:00 [pubmed] PHST- 1993/06/29 00:01 [medline] PHST- 1993/06/29 00:00 [entrez] AID - 10.1098/rstb.1993.0068 [doi] PST - ppublish SO - Philos Trans R Soc Lond B Biol Sci. 1993 Jun 29;340(1293):273-8. doi: 10.1098/rstb.1993.0068.