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The term death receptor refers to those members of the TNF receptor superfamily that contain a death domain, such as TNFR1, Fas receptor, DR4 and DR5. [4] They were named after the fact that they seemed to play an important role in apoptosis (programmed cell death), although they are now known to play other roles as well.
When TNF binds to its receptors, tumor necrosis factor receptor 1 (TNFR1) and tumor necrosis factor receptor 2 (TNFR2), a pathway of signals is triggered within the target cell, resulting in an inflammatory response. sTNF can only activate TNFR1, whereas tmTNF can activate both TNFR1 and TNFR2, [6] as well as trigger inflammatory signaling ...
CD137, a member of the tumor necrosis factor receptor family, is a type 1 transmembrane protein, expressed on surfaces of leukocytes and non-immune cells. [5] [6] Its alternative names are tumor necrosis factor receptor superfamily member 9 (TNFRSF9), 4-1BB, and induced by lymphocyte activation (ILA).
Individuals with TRAPS have a mutation in the tumor necrosis factor receptor-1 (TNFR1) gene; [11] the mechanisms by which mutations in TNFR1 lead to the TRAPS phenotype are still unknown. Impaired shedding of the TNF receptor is one of the possible defects, most mutations affect the extracellular domain of the receptor, some also the cleavage site.
Tumor necrosis factor ligand superfamily member 9 also known as 4-1BB ligand or 4-1BBL or CD137L is a protein that in humans is encoded by the TNFSF9 gene. [ 5 ] 4-1BBL is a type 2 transmembrane glycoprotein receptor that is found on APCs (antigen presenting cells) and binds to 4-1BB (also known as CD137).
The tumor necrosis factor (TNF) superfamily is a protein superfamily of type II transmembrane proteins containing TNF homology domain and forming trimers. Members of this superfamily can be released from the cell membrane by extracellular proteolytic cleavage and function as a cytokine .
[9] [10] The binding of lymphotoxin to LT-β receptors is essential for the recruitment of B cells and cytotoxic (CD8+) T cells to specific lymphoid sites to allow the clearing of antigen. [2] Signaling of the LT-β receptors can also induce the differentiation of NK (natural killer) and NK-T cells , which are key players in the innate immune ...
Fas ligand or FasL is a type II transmembrane protein belonging to the tumor necrosis factor superfamily (TNFSF). It is homotrimeric, which means it consists of three identical polypeptides. It has a long cytoplasmic domain, a stalk region, a transmembrane domain (TM), a TNF homology domain (THD) responsible for the homotrimerization. Including ...