L-selectin
From Wikipedia, the free encyclopedia
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Selectin L (lymphocyte adhesion molecule 1)
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| Identifiers | ||||||||||||||
| Symbol(s) | SELL; CD62L; LAM-1; LAM1; LECAM1; LNHR; LSEL; LYAM1; Leu-8; Lyam-1; PLNHR; TQ1; hLHRc | |||||||||||||
| External IDs | OMIM: 153240 MGI: 98279 HomoloGene: 539 | |||||||||||||
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| RNA expression pattern | ||||||||||||||
| Orthologs | ||||||||||||||
| Human | Mouse | |||||||||||||
| Entrez | 6402 | 20343 | ||||||||||||
| Ensembl | ENSG00000188404 | ENSMUSG00000026581 | ||||||||||||
| Uniprot | P14151 | Q3TA36 | ||||||||||||
| Refseq | NM_000655 (mRNA) NP_000646 (protein) |
NM_011346 (mRNA) NP_035476 (protein) |
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| Location | Chr 1: 167.93 - 167.95 Mb | Chr 1: 165.9 - 165.91 Mb | ||||||||||||
| Pubmed search | [1] | [2] | ||||||||||||
L-selectin, also known as CD62L, is a cell adhesion molecule found on leukocytes. It belongs to the selectin family of proteins, which recognise sialylated carbohydrate groups. It is cleaved by ADAM17.
SELL is a cell surface component that is a member of a family of adhesion/homing receptors which play important roles in leukocyte-endothelial cell interactions. The molecule is composed of multiple domains: one homologous to lectins, one to epidermal growth factor, and two to the consensus repeat units found in C3/C4 binding proteins.[1]
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[edit] Ligands
- GlyCAM-1, found in the high endothelial venules of the lymph nodes.
- CD34, found on endothelial cells.
- MadCAM-1, found on endothelial cells of gut associated lymphoid tissue.
- PSGL-1, binds with low affinity.
[edit] Function
L-selectin acts as a "homing receptor" for leukocytes to enter secondary lymphoid tissues via the high endothelial venules. Ligands present on endothelial cells will bind to leukocytes expressing L-selectin, which causes the leukocytes to become localised at that point[2]. The receptor is also found on the cell surfaces of "naive" T cells, which have not yet encountered their specific antigen. This surface expression is lost after the cells are activated.
[edit] External links
[edit] References
- ^ Entrez Gene: SELL selectin L (lymphocyte adhesion molecule 1).
- ^ Cotran; Kumar, Collins. Robbins Pathologic Basis of Disease. Philadelphia: W.B Saunders Company. 0-7216-7335-X.
[edit] Further reading
- Ryan US, Worthington RE (1992). "Cell-cell contact mechanisms.". Curr. Opin. Immunol. 4 (1): 33–7. PMID 1375831.
- Nicholson IC (2003). "CD62L (L-selectin).". J. Biol. Regul. Homeost. Agents 16 (2): 144–6. PMID 12144128.
- Ivetic A, Ridley AJ (2005). "The telling tail of L-selectin.". Biochem. Soc. Trans. 32 (Pt 6): 1118–21. doi:. PMID 15506984.
- Lasky LA, Singer MS, Dowbenko D, et al. (1992). "An endothelial ligand for L-selectin is a novel mucin-like molecule.". Cell 69 (6): 927–38. PMID 1376638.
- Ord DC, Ernst TJ, Zhou LJ, et al. (1990). "Structure of the gene encoding the human leukocyte adhesion molecule-1 (TQ1, Leu-8) of lymphocytes and neutrophils.". J. Biol. Chem. 265 (14): 7760–7. PMID 1692315.
- Bevilacqua M, Butcher E, Furie B, et al. (1991). "Selectins: a family of adhesion receptors.". Cell 67 (2): 233. PMID 1717161.
- Tedder TF, Isaacs CM, Ernst TJ, et al. (1989). "Isolation and chromosomal localization of cDNAs encoding a novel human lymphocyte cell surface molecule, LAM-1. Homology with the mouse lymphocyte homing receptor and other human adhesion proteins.". J. Exp. Med. 170 (1): 123–33. PMID 2473156.
- Camerini D, James SP, Stamenkovic I, Seed B (1989). "Leu-8/TQ1 is the human equivalent of the Mel-14 lymph node homing receptor.". Nature 342 (6245): 78–82. doi:. PMID 2509939.
- Bowen BR, Nguyen T, Lasky LA (1989). "Characterization of a human homologue of the murine peripheral lymph node homing receptor.". J. Cell Biol. 109 (1): 421–7. PMID 2663882.
- Siegelman MH, Weissman IL (1989). "Human homologue of mouse lymph node homing receptor: evolutionary conservation at tandem cell interaction domains.". Proc. Natl. Acad. Sci. U.S.A. 86 (14): 5562–6. PMID 2664786.
- Bajorath J, Aruffo A (1995). "A template for generation and comparison of three-dimensional selectin models.". Biochem. Biophys. Res. Commun. 216 (3): 1018–23. doi:. PMID 7488174.
- Dianzani U, Bragardo M, Buonfiglio D, et al. (1995). "Modulation of CD4 lateral interaction with lymphocyte surface molecules induced by HIV-1 gp120.". Eur. J. Immunol. 25 (5): 1306–11. PMID 7539755.
- Maruyama K, Sugano S (1994). "Oligo-capping: a simple method to replace the cap structure of eukaryotic mRNAs with oligoribonucleotides.". Gene 138 (1-2): 171–4. PMID 8125298.
- Brenner B, Gulbins E, Schlottmann K, et al. (1997). "L-selectin activates the Ras pathway via the tyrosine kinase p56lck.". Proc. Natl. Acad. Sci. U.S.A. 93 (26): 15376–81. PMID 8986819.
- Zöllner O, Lenter MC, Blanks JE, et al. (1997). "L-selectin from human, but not from mouse neutrophils binds directly to E-selectin.". J. Cell Biol. 136 (3): 707–16. PMID 9024699.
- Suzuki Y, Yoshitomo-Nakagawa K, Maruyama K, et al. (1997). "Construction and characterization of a full length-enriched and a 5'-end-enriched cDNA library.". Gene 200 (1-2): 149–56. PMID 9373149.
- Prakobphol A, Thomsson KA, Hansson GC, et al. (1998). "Human low-molecular-weight salivary mucin expresses the sialyl lewisx determinant and has L-selectin ligand activity.". Biochemistry 37 (14): 4916–27. doi:. PMID 9538010.
- Sassetti C, Tangemann K, Singer MS, et al. (1998). "Identification of podocalyxin-like protein as a high endothelial venule ligand for L-selectin: parallels to CD34.". J. Exp. Med. 187 (12): 1965–75. PMID 9625756.
- Malhotra R, Ward M, Sim RB, Bird MI (1999). "Identification of human complement Factor H as a ligand for L-selectin.". Biochem. J. 341 ( Pt 1): 61–9. PMID 10377245.
This article incorporates text from the United States National Library of Medicine, which is in the public domain.
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