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  • Title: Molecular cloning of human RP105.
    Author: Fugier-Vivier I, de Bouteiller O, Guret C, Fossiez F, Banchereau J, Mattei MG, Aït-Yahia S, Garcia E, Lebecque S, Liu YJ.
    Journal: Eur J Immunol; 1997 Jul; 27(7):1824-7. PubMed ID: 9247598.
    Abstract:
    RP105 is a 105-kDa type I membrane protein of the leucine-rich repeat (LRR) family. Anti-RP105 sensitizes B cells to antigen-receptor-mediated apoptosis, but protects B cells from radiation-induced apoptosis and stimulates B cell proliferation. The sequence of the mouse RP105 has been reported. Here, we report the characterization of the human RP105. The 2.6-kb cDNA encodes a protein of 661 amino acids which displays 78% homology with mouse RP105. The 22 LRR and the 9 potential N-linked glycosylation sites within the extracellular region are conserved. While previous studies have shown that RP105 is expressed on surface IgM+IgD+2 B cells in mice, human RP105 was shown to be expressed on all subsets of mature B cells and dendritic cells. Human RP105 gene was mapped to the long arm of chromosome 5, where numerous cytokines and receptors have been localized.
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