Notch Intracellular Domain
Notch Intracellular Domain - Related Videos
10:08
Purification and Aggregation of the Amyloid Precursor Protein Intracellular Domain
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Cited by 1 •
2012
A method for large-scale purification of the APP intracellular domain (AICD) is described. We also describe methodology to induce in vitro AICD aggregation and visualization by atomic force microscopy. The methods described are useful for biochemical/structural characterization of the AICD and the effects of molecular chaperones on its aggregation.
08:01
Stimulation of Notch Signaling in Mouse Osteoclast Precursors
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Cited by 13 •
2017
Notch signaling is a form of cellular communication that relies upon direct contact between cells. To properly induce Notch signaling in vitro, Notch ligands must be presented to cells in an immobilized state. This protocol describes methods for in vitro stimulation of Notch signaling in mouse osteoclast precursors.
02:26
Conservation of Protein Domains Over Different Proteins
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2020
Protein domains are small structurally independent units that are part of a single amino acid chain. Although these domains are often structurally independent, they may rely on synergistic effects to perform their functions as part of a larger protein. Protein domains may be conserved within the same organism, as well as across different organisms. A limited set of protein domains often duplicate and recombine during evolution. These domains can be organized in different combinations to form...
03:14
Notch Signaling Pathway
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2021
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule. The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
03:14
Notch Signaling Pathway
0 Views •
2023
The Notch signaling pathway is a major intracellular signaling pathway that is highly conserved over a broad spectrum of metazoan species. It stands unique from other intracellular signaling mechanisms in animals because notch protein itself acts as the receptor as well as the primary signaling molecule. The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not until 1985...
FAQs
NICD generation depends on sequential proteolysis rather than a single release event. Notch activation by an adjacent cell initiates cleavage steps, with gamma-secretase performing the membrane-associated cleavage that liberates the signaling fragment. This ordered processing is important because only after release can NICD leave the receptor, move to the nucleus, and connect extracellular cell contact with changes in gene transcription.
Inside the nucleus, NICD changes CSL/RBP-Jκ from a DNA-associated factor into a transcriptional activator. NICD binding provides the signal-dependent component, while Mastermind-like coactivators help assemble the active transcriptional complex. This switch explains how a receptor interaction at the cell surface can alter expression of genes that influence cell fate, differentiation, proliferation, and tissue patterning.
Cellular context matters because NICD signaling begins with communication between neighboring cells. The relevant Notch receptor must receive activation from an adjacent cell before proteolytic processing and nuclear signaling can proceed. Consequently, NICD provides a mechanism for local coordination: one cell’s interaction with another can influence developmental decisions and patterns across a tissue rather than acting as an isolated intracellular event.
A conceptual workflow follows NICD through the pathway in sequence: establish Notch activation by a neighboring cell, identify the cleavage events, determine whether gamma-secretase-dependent release has occurred, and then assess nuclear entry, CSL/RBP-Jκ association, coactivator participation, and transcriptional consequences. Organizing observations this way helps distinguish a defect in receptor processing from one in nuclear gene regulation.
NICD is relevant to cancer research because disrupted Notch signaling is associated with disease, including cancer. Examining its release, nuclear localization, and transcriptional activity can help connect an abnormal receptor signal to altered regulation of proliferation, differentiation, or cell fate. This places NICD at the molecular link between pathway malfunction and changes in tissue behavior.
Following NICD from membrane cleavage to transcription gives developmental biology a molecular chain of evidence. The pathway links cell-to-cell communication with gene regulation, allowing researchers to examine how local signals influence cell fate, differentiation, proliferation, and tissue patterning. These connections make NICD useful for interpreting developmental processes in which neighboring cells must coordinate their behavior.