Investigating the genetic circuitry of mastermind in Drosophila, a notch signal effector.
Notch signaling regulates multiple developmental processes and is implicated in various human diseases. Through use of the Notch transcriptional co-activator mastermind, we conducted a screen for Notch signal modifiers using the Exelixis collection of insertional mutations, which affects approximately 50% of the Drosophila genome, recovering 160 genes never before associated with Notch, extending the previous roster of genes that interact functionally with the Notch pathway and mastermind. As the molecular identity for most recovered genes is known, gene ontology (GO) analysis was applied, grouping genes according to functional classifications. We identify novel Notch-associated GO categories, uncover nodes of integration between Notch and other signaling pathways, and unveil groups of modifiers that suggest the existence of Notch-independent mastermind functions, including a conserved ability to regulate Wnt signaling.
Kankel
Mark W
MW
Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
Hurlbut
Gregory D
GD
Upadhyay
Geeta
G
Yajnik
Vijay
V
Yedvobnick
Barry
B
Artavanis-Tsakonas
Spyros
S
D000818:Animals; D029721:Drosophila Proteins / Q000235:genetics*; D053263:Gene Regulatory Networks; D017344:Genes, Insect; D049750:Genome, Insect; D009154:Mutation; D009687:Nuclear Proteins / Q000235:genetics*; D051880:Receptors, Notch / Q000378:metabolism*; D015398:Signal Transduction / Q000235:genetics*; D051153:Wnt Proteins
D029721:Drosophila Proteins; D009687:Nuclear Proteins; D051880:Receptors, Notch; D051153:Wnt Proteins; C085316:mam protein, Drosophila