Junctional adhesion molecule-like - Q86YT9 (JAML_HUMAN)

 

Protein Feature View of PDB entries mapped to a UniProtKB sequence  

 
Function
Transmembrane protein of the plasma membrane of leukocytes that control their migration and activation through interaction with CXADR, a plasma membrane receptor found on adjacent epithelial and endothelial cells. The interaction between both receptors mediates the activation of gamma-delta T-cells, a subpopulation of T-cells residing in epithelia and involved in tissue homeostasis and repair. Upon epithelial CXADR-binding, JAML induces downstream cell signaling events in gamma-delta T-cells through PI3-kinase and MAP kinases. It results in proliferation and production of cytokines and growth factors by T-cells that in turn stimulate epithelial tissues repair. It also controls the transmigration of leukocytes within epithelial and endothelial tissues through adhesive interactions with epithelial and endothelial CXADR. UniProt
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Subunit Structure
Homodimer; active form in leukocyte-endothelial cell adhesion. Interacts (homodimeric form) with CXADR. Interacts (via cytoplasmic domain) with the PI3 kinase; upon CXADR-binding. Interacts with ITGA4 and ITGB1; integrin alpha-4/beta-1 may regulate leukocyte to endothelial cells adhesion by controlling JAML homodimerization. UniProt
Domain
The Ig-like V-type domain 1 mediates interaction with CXADR (By similarity). The Ig-like V-type domain 2 may also play a role in the interaction (PubMed:15800062). UniProt
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The PDB to UniProt mapping is based on the data provided by the EBI SIFTS project. See also Velankar et al., Nucleic Acids Research 33, D262-265 (2005).
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