EGF-like module-containing mucin-like hormone receptor-like 3 is a protein encoded by the ADGRE3gene.[1][2] EMR3 is a member of the adhesion GPCR family.[3][4]
Adhesion GPCRs are characterized by an extended extracellular region often possessing N-terminal protein modules that is linked to a TM7 region via a domain known as the GPCR-Autoproteolysis INducing (GAIN) domain.[5]
EMR3 expression is restricted to monocytes/macrophages, myeloid dendritic cells, and mature granulocytes in human.[6] Transcription of the EMR3 gene results in two alternative spliced forms: a surface protein with extracellular, 7TM, and intracellular domains as well as a truncated soluble form of only the extracellular domain.[7] Mice, next to Emr2, lack the Emr3 gene.[8]
The protein may play a role in myeloid-myeloid interactions during immune and inflammatory responses.[9]
Ligands
A potential ligand of EMR3 likely is expressed on human macrophage and activated neutrophils.[7]
References
↑Stacey M, Lin HH, Hilyard KL, Gordon S, McKnight AJ (Jun 2001). "Human epidermal growth factor (EGF) module-containing mucin-like hormone receptor 3 is a new member of the EGF-TM7 family that recognizes a ligand on human macrophages and activated neutrophils". The Journal of Biological Chemistry. 276 (22): 18863–70. doi:10.1074/jbc.M101147200. PMID11279179.
↑Stacey M, Yona S (2011). Adhesion-GPCRs: Structure to Function (Advances in Experimental Medicine and Biology). Berlin: Springer. ISBN1-4419-7912-3.
↑Langenhan, T; Aust, G; Hamann, J (21 May 2013). "Sticky signaling--adhesion class G protein-coupled receptors take the stage". Science signaling. 6 (276): re3. doi:10.1126/scisignal.2003825. PMID23695165.
↑Matmati M, Pouwels W, van Bruggen R, Jansen M, Hoek RM, Verhoeven AJ, Hamann J (Feb 2007). "The human EGF-TM7 receptor EMR3 is a marker for mature granulocytes". Journal of Leukocyte Biology. 81 (2): 440–8. doi:10.1189/jlb.0406276. PMID17108056.
↑ 7.07.1Stacey M, Lin HH, Hilyard KL, Gordon S, McKnight AJ (Jun 2001). "Human epidermal growth factor (EGF) module-containing mucin-like hormone receptor 3 is a new member of the EGF-TM7 family that recognizes a ligand on human macrophages and activated neutrophils". The Journal of Biological Chemistry. 276 (22): 18863–70. doi:10.1074/jbc.M101147200. PMID11279179.
↑Kwakkenbos MJ, Matmati M, Madsen O, Pouwels W, Wang Y, Bontrop RE, Heidt PJ, Hoek RM, Hamann J (Dec 2006). "An unusual mode of concerted evolution of the EGF-TM7 receptor chimera EMR2". FASEB Journal. 20 (14): 2582–4. doi:10.1096/fj.06-6500fje. PMID17068111.