Delta Ligand
Delta Ligand - Related Videos
01:17
The Delta-to-Delta Circuit
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2024
In a delta-delta configuration, the source and the load are connected in a delta manner, forming a closed loop that divides the network into three distinct phases. This configuration makes the phase voltages identical to line voltages. Assuming the sources are in positive sequence, the phase voltages can be expressed directly without having a neutral wire. The phase currents in a delta-connected load are calculated by dividing the phase voltage by the load impedance per phase: In this...
05:47
Intravital Visualization of Gamma Delta Intraepithelial Lymphocytes
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2025
This video demonstrates the visualization of γδ intraepithelial lymphocytes (IELs) in transgenic mice using confocal microscopy. The surgical procedure involves creating a perforation line and making a longitudinal incision to expose the intestinal mucosa and villi. The transgenic mice express reporter proteins exclusively in γδ IELs, allowing their tracking. Intravital imaging captures the dynamic movement of green fluorescence-labeled γδ IELs along the intestinal epithelial cell's basement...
02:40
Ligand Binding Sites
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2020
Proteins are dynamic macromolecules that carry out a wide variety of essential processes; however, the activities of most proteins depend on their interactions with other molecules or ions, known as ligands. Protein-ligand interactions are quite specific; even though numerous potential ligands surround a cellular protein at any given time, only a particular ligand can bind to that protein. Moreover, a ligand binds only to a dedicated area on the surface of the protein, known as the...
02:51
Metal-Ligand Bonds
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2020
The hemoglobin in the blood, the chlorophyll in green plants, vitamin B-12, and the catalyst used in the manufacture of polyethylene all contain coordination compounds. Ions of the metals, especially the transition metals, are likely to form complexes. In these complexes, transition metals form coordinate covalent bonds, a kind of Lewis acid-base interaction in which both of the electrons in the bond are contributed by a donor (Lewis base) to an electron acceptor (Lewis acid). The Lewis acid in...
00:49
Ligand Binding and Linkage
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2020
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence the...
FAQs
The two cells contribute different parts of the pathway. Delta ligand remains anchored in the membrane of the signaling cell, while the adjacent receiving cell provides the Notch receptor. This arrangement restricts activation to direct cell-cell contact and allows neighboring cells to adopt coordinated but potentially different fates during development and tissue maintenance.
Delta ligand endocytosis does more than remove ligand from the cell surface. As the ligand is internalized, it generates mechanical force across the ligand-receptor interaction. That force exposes a cleavage site in Notch, enabling the sequential proteolytic steps required to release the Notch intracellular domain and continue signaling in the receiving cell.
The Delta-Serrate-LAG-2 domain provides the extracellular interaction surface through which Delta ligand binds Notch. Its position outside the signaling cell is important because receptor engagement occurs across the space between adjacent membranes. This binding event initiates the mechanical and proteolytic sequence that ultimately changes transcriptional regulation in the receiving cell.
Delta-Notch signaling couples the behavior of neighboring cells so that developmental choices occur in a coordinated pattern rather than independently. After Notch activation, the released intracellular domain regulates gene transcription in the receiving cell. This mechanism supports controlled decisions about cell identity and behavior in developing tissues and in tissues that require ongoing maintenance.
Delta ligands are examined in several settings where neighboring-cell communication guides tissue organization. The pathway contributes to neurogenesis, the formation of somites, hematopoiesis, and stem cell behavior. Studying these contexts helps researchers connect membrane-level ligand-receptor interactions with broader outcomes such as developmental patterning and maintenance of cellular populations.
Their signaling activity provides a molecular framework for investigating how developing tissues coordinate cell fate decisions. Research can relate Delta ligand function to processes such as neurogenesis and somitogenesis, where spatial communication between adjacent cells is important. This makes the ligand useful for linking specific receptor activation events to larger changes in tissue organization during development.
Delta-Notch signaling is relevant to regenerative research because it influences stem cell behavior and tissue maintenance. Examining this pathway can help researchers understand how local signals affect whether cells preserve appropriate characteristics or participate in tissue organization. The same context connects membrane-bound ligand activity with efforts to interpret how tissues maintain or restore functional cell populations.
Changes in Delta-Notch signaling can disrupt normal developmental and tissue-maintenance programs, which is why Delta ligands are also studied in disease contexts. Cancer research examines this pathway as part of understanding how abnormal signaling may affect cell behavior. Its relevance arises from the connection between regulated cell fate decisions and the consequences of their disruption.