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  • 1
    ISSN: 1432-8798
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary.  Human cytomegalovirus (HCMV) open reading frame (ORF) UL11 locates within a polymorphic region of the viral genome identified previously by a restriction-fragment-length-polymorphism. We report here that ORF UL11 encodes a polymorphic protein expressed on the surface of HCMV-infected cells. First, we determined the nucleotide sequence of ORF UL11 from ten strains and compared it among the strains. Out of 205 amino acids consisting of the predicted N-terminal region beside the putative transmembrane stretch in strain AD169, 88 residues were divergent on more than one strain. In contrast, the predicted C-terminal side including the putative transmembrane domain was identical at the amino acid sequence level. In addition, the number and location of predicted cysteine residue were also conserved. Next, we screened a cDNA library from HCMV-infected cells and obtained a cDNA clone containing the full-length ORF UL11. Finally, we identified the gene product of UL11 on the surface of HCMV-infected cells by FACS analysis with polyclonal antibodies generated against a glutathione S-transferase/UL11 fusion protein. The fusion protein contained a region within the N-terminal side next to the predicted transmembrane stretch. These results indicate that the N-terminal side of UL11 protein containing variable amino acid residues protrudes from the infected cell surface.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1435-232X
    Keywords: Key words Na+/Phosphate cotransporter (NPT) ; Intestine ; Chromosome 6p21.3-p22 ; RT-PCR ; cDNA library
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We isolated a cDNA clone which shows a significant similarity with the renal Na+/phosphate cotransporter (NPT) from a human intestine mucosa cDNA library. The cDNA is 2626 bases long, with one open reading frame encoding a protein of 497 amino acids. The deduced amino acids sequence shows an overall homology of 48% with the human renal NPT1 protein. This gene is expressed in intestine, colon, liver, and pancreas. Thus, this gene may code for intestinal type NPT or closely related proteins. The chromosomal location of the gene was determined on the chromosome 6p21.3-p22 region by polymerase chain reaction-based analysis with both a human/rodent mono-chromosomal hybrid cell panel and a radiation hybrid mapping panel.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1435-232X
    Keywords: Key words Butyrophilin ; rfp domain ; Colon ; Chromosome 5q35 ; RT-PCR ; cDNA library
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract We isolated a cDNA clone which shows a similarity with human butyrophilin from a human colon mucosa cDNA library. The cDNA is 1964 bases long, with one open reading frame encoding a protein of 433 amino acids. The deduced amino acid sequence shows an overall homology of 36.5% with the human butyrophilin protein. This gene is mainly expressed in small intestine, colon, testis, and leukocytes. The chromosomal location of the gene was determined on the chromosome 5q35 region by polymerase chain reaction-based analysis with both a human/rodent monochromosomal hybrid cell panel and a radiation hybrid mapping panel.
    Type of Medium: Electronic Resource
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