Signaling by wingless in Drosophila.
Wingless, a member of the Wnt gene family, is an essential gene for segmentation in Drosophila, and is also involved in many other patterning events. The gene encodes a secreted protein that can regulate gene expression in adjacent cells. Recently, significant progress has been made in elucidating the signal transduction pathway of wingless, mainly by genetic experiments but increasingly also at the biochemical level. While many components of wingless signaling, in particular a receptor, remain to be identified, our current understanding of wingless pathway is more advanced than that of other Wnt genes. We will give an overview of the various roles of wingless in development, and we will then summarize the wingless signaling pathway as it has emerged from genetic and biochemical studies. Where appropriate, wingless signaling will be compared to the activity of vertebrate Wnt proteins.
Klingensmith
J
J
Howard Hughes Medical Institute, Department of Developmental Biology, Stanford University School of Medicine, California 94305.
Nusse
R
R
D048868:Adaptor Proteins, Signal Transducing; D000818:Animals; D051186:Armadillo Domain Proteins; D002455:Cell Division; D003598:Cytoskeletal Proteins / Q000502:physiology; D000072261:Dishevelled Proteins; D029721:Drosophila Proteins; D004331:Drosophila melanogaster / Q000196:embryology* / Q000235:genetics; D018507:Gene Expression Regulation, Developmental; D017344:Genes, Insect; D009024:Morphogenesis; D010750:Phosphoproteins; D011506:Proteins / Q000502:physiology; D011518:Proto-Oncogene Proteins / Q000502:physiology*; D015398:Signal Transduction; D015534:Trans-Activators; D014157:Transcription Factors; D051155:Wnt1 Protein; D051178:alpha Catenin
C495305:ARM protein, Drosophila; D048868:Adaptor Proteins, Signal Transducing; D051186:Armadillo Domain Proteins; D003598:Cytoskeletal Proteins; D000072261:Dishevelled Proteins; D029721:Drosophila Proteins; D010750:Phosphoproteins; D011506:Proteins; D011518:Proto-Oncogene Proteins; D015534:Trans-Activators; D014157:Transcription Factors; D051155:Wnt1 Protein; D051178:alpha Catenin; C074622:wg protein, Drosophila