Search for MHC-associated genes in human: five new genes centromeric to HLA-DP with yet unknown functions |
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Authors: | Mahmoud Janatipour Yuri Naumov Asako Ando Kazuhito Sugimura Naoaki Okamoto Kimiyoshi Tsuji Kuniya Abe Hidetoshi Inoko |
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Affiliation: | (1) Department of Transplantation II, Tokai University School of Medicine, Bohseidai, 259-11 Isehara, Japan;(2) Furusawa Morpho Gene Project, ERATO, Research Development Corporation of Japan (JRDC), 305 Tsukuba, Japan;(3) Department of Pathology, School of Medicine, University of Isfahan, 81759 Isfahan, Iran |
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Abstract: | Taking advantage of five mouse genomic or cDNA probes [KE5(probe 14), KE4 (probe11), KE3 (probe7), KE2 (probe5), and SET] mapped on the H-2K region in mouse, we have identified and localized homologues of these five genes in the human major histocompatibility complex region (HKE5, HKE4, HKE3, HKE2, and HSET, respectively). Cosmid cloning and pulsed field gel electrophoresis analyses indicated that a human homologous gene, HKE5, is located 10 kilobases (kb) centromeric of the 2(XI) collagen (COL11A2) gene followed by HKE4. HKE3, closely linked to HKE2, is located 170 kb centromeric of HKE4. Furthermore, HSET is located 50 kb centromeric of HKE2. This gene organization outside the DP subregion is completely identical to that of the mouse H-2K region centromeric of I-Pb 3, a mouse homologue of the DPB gene, except the lack of genes corresponding to the H-2K and -K2 genes in human. |
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