Structure of the soluble human 55 kd TNF receptor-human TNF beta complex.[1]
Identifiers
Symbol
TNFR_c6
Pfam
PF00020
InterPro
IPR011614
PROSITE
PDOC00561
SCOP2
1tnr / SCOPe / SUPFAM
Membranome
6
Available protein structures:
Pfam
structures / ECOD
PDB
RCSB PDB; PDBe; PDBj
PDBsum
structure summary
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.[2][3] With the exception of nerve growth factor (NGF), all TNFs are homologous to the archetypal TNF-alpha.[4] 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 adaptor protein such as TRADD, TRAF, 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 proliferation, survival, and differentiation. TNF receptors are expressed in a wide variety of tissues in mammals, especially in leukocytes.[4]
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.[5]
In the strict sense, the term TNF receptor is often used to refer to the archetypal members of the superfamily, namely TNFR1 and TNFR2, which recognize TNF-alpha.
^Banner DW, D'Arcy A, Janes W, et al. (May 1993). "Crystal structure of the soluble human 55 kd TNF receptor-human TNF beta complex: implications for TNF receptor activation". Cell. 73 (3): 431–45. doi:10.1016/0092-8674(93)90132-A. PMID 8387891. S2CID 25155518.
^Locksley RM, Killeen N, Lenardo MJ (2001). "The TNF and TNF receptor superfamilies: integrating mammalian biology". Cell. 104 (4): 487–501. doi:10.1016/S0092-8674(01)00237-9. PMID 11239407. S2CID 7657797.
^Hehlgans T, Pfeffer K (2005). "The intriguing biology of the tumour necrosis factor/tumour necrosis factor receptor superfamily: players, rules and the games". Immunology. 115 (1): 1–20. doi:10.1111/j.1365-2567.2005.02143.x. PMC 1782125. PMID 15819693.
^ abcGravestein, LA; Borst, J (December 1998). "Tumor necrosis factor receptor family members in the immune system". Seminars in Immunology. 10 (6): 423–34. doi:10.1006/smim.1998.0144. PMID 9826575.
^Ashkenazi, A.; Dixit, VM (1998). "Death Receptors: Signaling and Modulation". Science. 281 (5381): 1305–8. doi:10.1126/science.281.5381.1305. PMID 9721089.
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