Lymphotoxin beta receptor

"LTBR" redirects here. For the airport in Turkey with that ICAO code, see Yenişehir Airport.
Lymphotoxin beta receptor (TNFR superfamily, member 3)

Crystallographic structure of a 24-residue peptide from the lymphotoxin-B receptor bound to TRAF3.[1]
Available structures
PDB Ortholog search: PDBe, RCSB
Identifiers
Symbols LTBR ; CD18; D12S370; LT-BETA-R; TNF-R-III; TNFCR; TNFR-RP; TNFR2-RP; TNFR3; TNFRSF3
External IDs OMIM: 600979 MGI: 104875 HomoloGene: 1753 ChEMBL: 1250360 GeneCards: LTBR Gene
RNA expression pattern
More reference expression data
Orthologs
Species Human Mouse
Entrez 4055 17000
Ensembl ENSG00000111321 ENSMUSG00000030339
UniProt P36941 P50284
RefSeq (mRNA) NM_001270987 NM_010736
RefSeq (protein) NP_001257916 NP_034866
Location (UCSC) Chr 12:
6.38 – 6.39 Mb
Chr 6:
125.31 – 125.31 Mb
PubMed search

Lymphotoxin beta receptor (LTBR), also known as tumor necrosis factor receptor superfamily member 3 (TNFRSF3), is a cell surface receptor for lymphotoxin involved in apoptosis and cytokine release.[2][3][4] It is a member of the tumor necrosis factor receptor superfamily.

Function

The protein encoded by this gene is a member of the tumor necrosis factor (TNF) family of receptors. It is expressed on the surface of most cell types, including cells of epithelial and myeloid lineages, but not on T and B lymphocytes. The protein specifically binds the lymphotoxin membrane form (a complex of lymphotoxin-alpha and lymphtoxin-beta). The encoded protein and its ligand play a role in the development and organization of lymphoid tissue and transformed cells. Activation of the encoded protein can trigger apoptosis.[2]

Not only does the LTBR help trigger apoptosis, it can lead to the release of the cytokine interleukin 8. Overexpression of LTBR in HEK293 cells increases IL-8 promoter activity and leads to IL-8 release. LTBR is also essential for development and organization of the secondary lymphoid organs and chemokine release.[5]

Structure

The Ramachandran plots show that 64.6% of all residues were in a favored region. This structure was found using X-ray diffraction. The resolution is 3.50 angstroms. The alpha and beta angles are 90 degrees while the gamma angle is 120 degrees.[6]

Interactions

Lymphotoxin beta receptor has been shown to interact with Diablo homolog[7] and TRAF3.[8][9][10]

References

  1. PDB: 1RF3; Li C, Norris PS, Ni CZ, Havert ML, Chiong EM, Tran BR, Cabezas E, Reed JC, Satterthwait AC, Ware CF, Ely KR (December 2003). "Structurally distinct recognition motifs in lymphotoxin-beta receptor and CD40 for tumor necrosis factor receptor-associated factor (TRAF)-mediated signaling". J. Biol. Chem. 278 (50): 50523–9. doi:10.1074/jbc.M309381200. PMID 14517219.
  2. 1 2 "Entrez Gene: LTBR lymphotoxin beta receptor (TNFR superfamily, member 3)".
  3. Baens M, Chaffanet M, Cassiman JJ, van den Berghe H, Marynen P (April 1993). "Construction and evaluation of a hncDNA library of human 12p transcribed sequences derived from a somatic cell hybrid". Genomics 16 (1): 214–8. doi:10.1006/geno.1993.1161. PMID 8486360.
  4. Crowe PD, VanArsdale TL, Walter BN, Ware CF, Hession C, Ehrenfels B, Browning JL, Din WS, Goodwin RG, Smith CA (April 1994). "A lymphotoxin-beta-specific receptor". Science 264 (5159): 707–10. doi:10.1126/science.8171323. PMID 8171323.
  5. Chang YH, Hsieh SL, Chen MC, Lin WW (August 2002). "Lymphotoxin beta receptor induces interleukin 8 gene expression via NF-kappaB and AP-1 activation". Exp. Cell Res. 278 (2): 166–74. doi:10.1006/excr.2002.5573. PMID 12169272.
  6. "MolProbity Ramachandran analysis" (PDF).
  7. Kuai, Jun; Nickbarg Elliott; Wooters Joe; Qiu Yongchang; Wang Jack; Lin Lih-Ling (Apr 2003). "Endogenous association of TRAF2, TRAF3, cIAP1, and Smac with lymphotoxin beta receptor reveals a novel mechanism of apoptosis". J. Biol. Chem. (United States) 278 (16): 14363–9. doi:10.1074/jbc.M208672200. ISSN 0021-9258. PMID 12571250.
  8. VanArsdale, T L; VanArsdale S L; Force W R; Walter B N; Mosialos G; Kieff E; Reed J C; Ware C F (Mar 1997). "Lymphotoxin-beta receptor signaling complex: role of tumor necrosis factor receptor-associated factor 3 recruitment in cell death and activation of nuclear factor kappaB". Proc. Natl. Acad. Sci. U.S.A. (UNITED STATES) 94 (6): 2460–5. doi:10.1073/pnas.94.6.2460. ISSN 0027-8424. PMC 20110. PMID 9122217.
  9. Wu, M Y; Wang P Y; Han S H; Hsieh S L (Apr 1999). "The cytoplasmic domain of the lymphotoxin-beta receptor mediates cell death in HeLa cells". J. Biol. Chem. (UNITED STATES) 274 (17): 11868–73. doi:10.1074/jbc.274.17.11868. ISSN 0021-9258. PMID 10207006.
  10. Marsters, S A; Ayres T M; Skubatch M; Gray C L; Rothe M; Ashkenazi A (May 1997). "Herpesvirus entry mediator, a member of the tumor necrosis factor receptor (TNFR) family, interacts with members of the TNFR-associated factor family and activates the transcription factors NF-kappaB and AP-1". J. Biol. Chem. (UNITED STATES) 272 (22): 14029–32. doi:10.1074/jbc.272.22.14029. ISSN 0021-9258. PMID 9162022.

Further reading

External links

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