Lymphocyte function-associated antigen 1, also known as LFA-1 is found on all T-cells and also on B-cells, macrophages and neutrophils and is involved in recruitment to the site of infection. It binds to ICAM-1 on antigen-presenting cells and functions as an adhesion molecule. LFA-1 is the first to bind T-cells to antigen-presenting cells and initially binds weakly. A signal from the T-cell receptor and/or the cytokine receptor changes the conformation and prolongs the cell contact, allowing the T-cell to proliferate.
LFA-1 is part of the family of leukocyte integrins that are recognised by their common β-chains (CD18). LFA-1 also has a distinct α-chain (CD11a).
See also
Further reading
- Janeway, Travers, Walport, Shlomchik, Immunobiology 6th ed. (2005) Garland Science:NY
- Parham, Peter, The Immune System 3rd ed. (2009) Garland Science: London and New York
External links
- MeSH LFA-1
- Davignon D, Martz E, Reynolds T, Kürzinger K, Springer TA (1981). "Lymphocyte function-associated antigen 1 (LFA-1): a surface antigen distinct from Lyt-2,3 that participates in T lymphocyte-mediated killing". Proc. Natl. Acad. Sci. U.S.A. 78 (7): 4535–9. PMID 7027264.
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Transmembrane receptors: immune receptors |
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Interleukins (2, 3, 4, 5, 6, 7, 9, 11, 12, 13, 15, 21, 23, 27)
CSF receptors (EPO, GM-CSF, G-CSF)
GH · prolactin · Oncostatin M · Leukemia inhibitory factor
common subunits ( Common gamma chain, common beta chain, gp130)
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Other
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| Other endogenous |
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| Exogenous |
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