Analysis of a variant without lysine in the intracellular domain reveals a ubiquitylation-independent signalling activity of the DSL ligand Delta and novel functions of the Neuralized and Mindbomb1 E3-ligases during Notch signalling.
C. elegans germline stem cells become quiescent under starved conditions, and this quiescence maintains the stem cell state even in the absence of GLP-1/Notch signaling, which is otherwise essential for stem cell maintenance.
Antagonistic signaling by the kinases PI3K and Itpkb limits the kinetics and enforces the Notch-dependence of beta-selection – the most important cell-fate determining process in alpha beta T cell development.
A dynamic confrontation between Notch signalling and the transcription factor Lmx1a at the borders of the developing inner ear sensory patches regulates their segregation and the positioning of their boundaries.
The conserved mechanism of Notch down-regulation by endo-lysosomal trafficking plays important roles in the proliferation and differentiation of stem and progenitor cells during embryogenesis or organogenesis in vertebrates.