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TNFRSF13B
Transmembrane activator and CAML interactor (TACI), also known as tumor necrosis factor receptor superfamily member 13B (TNFRSF13B) is a protein that in humans is encoded by the TNFRSF13B gene. TNFRSF13B is a transmembrane protein of the TNF receptor superfamily found predominantly on the surface of B cells, which are an important part of the immune system. TACI recognizes three ligands: APRIL, BAFF and CAML. Function TACI is a lymphocyte-specific member of the tumor necrosis factor (TNF) receptor superfamily. It was originally discovered because of its ability to interact with calcium-modulator and cyclophilin ligand (CAML). TACI was later found to play a crucial role in humoral immunity by interacting with two members of the TNF family: BAFF and APRIL. These proteins signal through TACI inducing activation of several transcription factors including NFAT, AP-1, and NF-kappa-B which then modulate cellular activities. Defects in the function of TACI can lead to immune sy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
B-cell Activating Factor
B-cell activating factor (BAFF) also known as tumor necrosis factor ligand superfamily member 13B and CD257 among other names, is a protein that in humans is encoded by the ''TNFSF13B'' gene. BAFF is also known as B Lymphocyte Stimulator (BLyS) and TNF- and APOL-related leukocyte expressed ligand (TALL-1) and the Dendritic cell-derived TNF-like molecule (CD257 antigen; cluster of differentiation 257). Structure and function BAFF is a cytokine that belongs to the tumor necrosis factor (TNF) ligand family. This cytokine is a ligand for receptors TNFRSF13B/TACI, TNFRSF17/BCMA, and TNFRSF13C/BAFF-R. This cytokine is expressed in B cell lineage cells, and acts as a potent B cell activator. It has been also shown to play an important role in the proliferation and differentiation of B cells. BAFF is a 285-amino acid long peptide glycoprotein which undergoes glycosylation at residue 124. It is expressed as a membrane-bound type II transmembrane protein on various cell types includ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TNFSF13
A proliferation-inducing ligand (APRIL), also known as tumor necrosis factor ligand superfamily member 13 (TNFSF13), is a protein of the TNF superfamily recognized by the cell surface receptor TACI. Nomenclature In the cluster of differentiation terminology, APRIL is designated CD256. Function The protein encoded by this gene is a member of the tumor necrosis factor ligand (TNF) ligand family. This protein is a ligand for TNFRSF17/BCMA, a member of the TNF receptor family. This protein and its receptor are both found to be important for B cell development. In vivo experiments suggest an important role for APRIL in the long-term survival of plasma cells in the bone marrow. Mice deficient in APRIL have normal immune system development. However, APRIL-deficient mice have also been reported to possess a reduced ability to support plasma cell survival. In vitro experiments suggested that this protein may be able to induce apoptosis through its interaction with other TNF receptor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
APRIL (protein)
A proliferation-inducing ligand (APRIL), also known as tumor necrosis factor ligand superfamily member 13 (TNFSF13), is a protein of the TNF superfamily recognized by the cell surface receptor TACI. Nomenclature In the cluster of differentiation terminology, APRIL is designated CD256. Function The protein encoded by this gene is a member of the tumor necrosis factor ligand (TNF) ligand family. This protein is a ligand for TNFRSF17/BCMA, a member of the TNF receptor family. This protein and its receptor are both found to be important for B cell development. In vivo experiments suggest an important role for APRIL in the long-term survival of plasma cells in the bone marrow. Mice deficient in APRIL have normal immune system development. However, APRIL-deficient mice have also been reported to possess a reduced ability to support plasma cell survival. In vitro experiments suggested that this protein may be able to induce apoptosis through its interaction with other TNF recepto ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRAF2
TNF receptor-associated factor 2 is a protein that in humans is encoded by the ''TRAF2'' gene. Function The protein encoded by this gene is a member of the TNF receptor associated factor (TRAF) protein family. TRAF proteins associate with, and mediate the signal transduction from members of the TNF receptor superfamily. This protein directly interacts with TNF receptors, and forms complexes with other TRAF proteins. TRAF2 is required for TNF-alpha-mediated activation of MAPK8/JNK and NF-κB. The protein complex formed by TRAF2 and TRAF1 interacts with the IAP family members cIAP1 and cIAP2, and functions as a mediator of the anti-apoptotic signals from TNF receptors. The interaction of this protein with TRADD, a TNF receptor associated apoptotic signal transducer, ensures the recruitment of IAPs for the direct inhibition of caspase activation. cIAP1 can ubiquitinate and induce the degradation of this protein, and thus potentiate TNF-induced apoptosis. Multiple alternatively s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TNF Receptor
The tumor necrosis factor receptor superfamily (TNFRSF) is a protein superfamily of cytokine receptors characterized by the ability to bind tumor necrosis factors (TNFs) via an extracellular cysteine-rich domain. With the exception of nerve growth factor (NGF), all TNFs are homologous to the archetypal TNF-alpha. In their active form, the majority of TNF receptors form trimeric complexes in the plasma membrane. Accordingly, most TNF receptors contain transmembrane domains (TMDs), although some can be cleaved into soluble forms (e.g. TNFR1), and some lack a TMD entirely (e.g. DcR3). In addition, most TNF receptors require specific Signal transducing adaptor protein, adaptor protein such as TRADD, TRAF, RIP kinase, RIP and FADD for downstream signalling. TNF receptors are primarily involved in apoptosis and inflammation, but they can also take part in other signal transduction pathways, such as Cell proliferation, proliferation, survival, and Cellular differentiation, differentiation. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
CAMLG
Calcium modulating ligand (CAMLG or CAML), also known as calcium-modulating cyclophilin ligand, is a signalling protein recognized by the TNF receptor TACI. Function The immunosuppressant drug cyclosporin A blocks a calcium-dependent signal from the T-cell receptor (TCR) that normally leads to T-cell activation. When bound to cyclophilin B, cyclosporin A binds and inactivates the key signaling intermediate calcineurin. The protein encoded by this gene functions similarly to cyclosporin A, binding to cyclophilin B and acting downstream of the TCR and upstream of calcineurin by causing an influx of calcium. This integral membrane protein appears to be a new participant in the calcium signal transduction pathway, implicating cyclophilin B in calcium signaling, even in the absence of cyclosporin. Interactions CAMLG has been shown to interact with TNFRSF13B Transmembrane activator and CAML interactor (TACI), also known as tumor necrosis factor receptor superfamily member 13B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRAF5
TNF receptor-associated factor 5 is a protein that in humans is encoded by the ''TRAF5'' gene. Function The scaffold protein encoded by this gene is a member of the tumor necrosis factor receptor-associated factor (TRAF) protein family and contains a meprin and TRAF homology (MATH) domain, a RING-type zinc finger, and two TRAF-type zinc fingers. TRAF proteins are associated with, and mediate signal transduction from members of the TNF receptor superfamily. This protein is one of the components of a multiple protein complex which binds to tumor necrosis factor (TNF) receptor cytoplasmic domains and mediates TNF-induced activation. Alternate transcriptional splice variants have been characterized. Interactions TRAF5 has been shown to interact with: * ASK1, * CD134, * CD30, * CD40, * RANK * TNFRSF13B, and * TNFRSF14 Herpesvirus entry mediator (HVEM), also known as tumor necrosis factor receptor superfamily member 14 (TNFRSF14), is a human cell surface receptor of the T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
TRAF6
TRAF6 is a TRAF human protein. Function The protein encoded by this gene is a member of the TNF receptor associated factor (TRAF) protein family. TRAF proteins are associated with, and mediate signal transduction from members of the TNF receptor superfamily. This protein mediates the signaling not only from the members of the TNF receptor superfamily, but also from the members of the Toll/IL-1 family. Signals from receptors such as CD40, TNFSF11/TRANCE/RANKL and IL-1 have been shown to be mediated by this protein. This protein also interacts with various protein kinases including IRAK1/IRAK, SRC and PKCzeta, which provides a link between distinct signaling pathways. This protein functions as a signal transducer in the NF-kappaB pathway that activates IkappaB kinase (IKK) in response to proinflammatory cytokines. The interaction of this protein with UBE2N/UBC13, and UBE2V1/UEV1A, which are ubiquitin conjugating enzymes catalyzing the formation of polyubiquitin chains, has been ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Total Anterior Circulation Infarct
Total anterior circulation infarct (TACI) is a type of cerebral infarction affecting the entire anterior circulation supplying one side of the brain. Total anterior circulation stroke syndrome (TACS) refers to the symptoms of a patient who clinically appears to have had a total anterior circulation infarct, but who has not yet had any diagnostic imaging (e.g. CT Scan) to confirm the diagnosis. It is diagnosed when it causes all 3 of the following symptoms: * Higher dysfunction ** Dysphasia ** Visuospatial disturbances ** Decreased level of consciousness * Homonymous hemianopia * Motor and Sensory Defects (≥2/3 of face, arm, leg) For more information, see stroke A stroke is a medical condition in which poor blood flow to the brain causes cell death. There are two main types of stroke: ischemic, due to lack of blood flow, and hemorrhagic, due to bleeding. Both cause parts of the brain to stop functionin .... External links {{DEFAULTSORT:Total Anterior Circulation In ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Common Variable Immunodeficiency
Common variable immunodeficiency (CVID) is an immune disorder characterized by recurrent infections and low antibody levels, specifically in immunoglobulin (Ig) types IgG, IgM and IgA. Symptoms generally include high susceptibility to foreign invaders, chronic lung disease, and inflammation and infection of the gastrointestinal tract. CVID affects males and females equally. The condition can be found in children or teens but is generally not diagnosed or recognized until adulthood. The average age of diagnosis is between 20 and 50. However, symptoms vary greatly between people. "Variable" refers to the heterogeneous clinical manifestations of this disorder, which include recurrent bacterial infections, increased risk for autoimmune disease and lymphoma, as well as gastrointestinal disease.Cunningham-Rundles, C. Clinical manifestations, epidemiology, and diagnosis of common variable immunodeficiency in adults. In: UpToDate, Notarangelo, LD, Feldweg, AM (Eds), UpToDate, Waltham, M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Atacicept
Atacicept is a recombinant fusion protein designed to inhibit B cells, thereby suppressing autoimmune disease. The designer protein combines the binding site for two cytokines that regulate maturation, function, and survival of B cells - B-lymphocyte stimulator (BLyS) and A proliferation-inducing ligand (APRIL), with the constant region of immunoglobin. Atacicept blocks activation of B cells by the tumor necrosis factor receptor superfamily member 13B (more commonly known as TACI), a transmembrane receptor protein found predominantly on the surface of B cells. Like the monoclonal antibody belimumab, atacicept blocks the binding of BLyS, but it also blocks APRIL. Binding of these TACI ligands induces proliferation, activation, and longevity of B cells and thus their production of autoantibodies. Atacicept is thought to selectively impair mature B cells and plasma cells with less impact on progenitor cells and memory B cells. Studies have looked at atacicept in animal models of au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |