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Search Thermo Fisher Scientific
Invitrogen
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Description: APO-1/Fas (CD95), a member of the TNF/NGF receptor superfamily, is a glycosylated 48 kDa surface protein containing a single transmembrane region. APO-1 is expressed on a variety of human B and T cell lines, on many different tumor cells and on various normal human tissues. APO-1 also occurs in a soluble form (sAPO-1) devoid of a transmembrane region. Triggering of APO-1 by its ligand or by certain anti-APO-1 monoclonal antibodies results in rapid induction of programmed cell death, apoptosis, in susceptible cells. The tissue distribution of APO-1 and of the APO-1 ligand suggests that the APO-1 receptor/ligand system plays an important role in various aspects of mammalian development and especially in the homeostasis of the immune system.
Expression of the APO-1 cell surface protein is enhanced by IFN-gamma and TNF and by activation in lymphocytes.
Applications Tested: ELISA, Flow Cytometry.
CD95, also known as Fas or APO-1, is a 46 kDa transmembrane glycoprotein that functions as a cell death receptor in the tumor necrosis factor receptor (TNFR) superfamily. It is expressed by a wide range of hematopoietic and non-hematopoietic cells, including monocytes, neutrophils, lymphocytes, and fibroblasts. CD95 also exists in a soluble form weighing approximately 26 kDa. The interaction of CD95 with its ligand, FasL, induces apoptosis, playing a crucial role in peripheral tolerance and anti-viral immune responses. Upon stimulation, CD95 leads to the aggregation of its intracellular Fas-associated death domains (FADD), formation of the death-inducing signaling complex (DISC), and activation of caspases. This cascade results in apoptosis. CD95 is also involved in activating NF-kappaB, MAPK3/ERK1, and MAPK8/JNK, and transduces proliferative signals in normal diploid fibroblasts and T cells. There are at least eight alternatively spliced transcript variants encoding seven distinct isoforms of CD95. Isoforms lacking the transmembrane domain may negatively regulate apoptosis mediated by the full-length isoform. The Fas/Fas ligand system is implicated in several human diseases, including AIDS, hepatitis, and cancer, highlighting its importance in immune regulation and disease pathology.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
Protein Aliases: Apo-1 antigen; APO-1 cell surface antigen; Apo-1 Fas; Apo1 antigen; apoptosis antigen 1; apoptosis signaling receptor FAS; Apoptosis-mediating surface antigen FAS; CD95; CD95 antigen; Fas (TNF receptor superfamily, member 6); Fas AMA; FASLG receptor; OTTHUMP00000020045; OTTHUMP00000020046; OTTHUMP00000020051; OTTHUMP00000059646; TNF receptor superfamily member 6; Tumor necrosis factor receptor superfamily member 6; tumor necrosis factor receptor superfamily, member 6
Gene Aliases: ALPS1A; APO-1; APT1; CD95; FAS; FAS1; FASTM; TNFRSF6
UniProt ID: (Human) Q14293
Entrez Gene ID: (Human) 355
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