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  • Title: Organization of human FcRII and FcRII-like (beta FcRII) genes: structural homology to HLA class I and class II genes.
    Author: Engelhardt W, Geerds C, Frey J.
    Journal: Mol Immunol; 1990 Apr; 27(4):379-82. PubMed ID: 2141667.
    Abstract:
    Genomic EMBL 3 DNA clones representing part of the human Fc gamma receptor II and the beta Fc gamma receptor II genes were characterized. One of them contains the first five exons including the 5' flanking region of the beta FcRII gene. The signal peptide, the extracellular domains, the putative membrane spanning region, and the first amino acids of the cytoplasmic region encoded by these five exons are spread over approximately 11 kb. Another genomic DNA clone comprises four exons encoding the second extracellular domain and the transmembrane and cytoplasmic regions of the FcRII. Alignment of the genomic DNA clones reveals that these FcR genes are identically organized. Comparison of the corresponding regions of these clones shows that not only the exons are strikingly homologous but also the splice junctions and parts of the intervening sequences are conserved. Furthermore, the genomic organization of FcRII and HLA-class I resemble each other.
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