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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Massey, E. J. Brown, J. P. Plowman, G. D. Seligman, P. A. Kaur, J. A. Jones, C. Butler, C. D. Miller, Y. |
| Abstract | Since the p97 antigen, a membrane-associated iron-binding protein, has extensive amino acid sequence with homology with transferrin, is functionally related to the transferrin receptor, and has been previously mapped to chromosome 3, we have performed additional studies for regional mapping of the gene expressing p97 antigen. In these experiments, Chinese hamster-human cell lines were chosen that contained a large spectrum of autosomal human chromosomes, but mainly consisted of clones expressing all or a part of chromosome 3. These cell lines included a clone that previously allowed for mapping of human transferrin receptor to q22-qter region. Human p97 expression was assessed by specific binding of [125I]monoclonal antibody 96.5, and human transferrin receptor expression was tested by specific [125I]human transferrin binding and [125I]monoclonal antibody OKT-9 specific for human transferrin receptor. Based on these analyses, both human p97 antigenic expression and human transferrin receptor are mapped concordantly to the q24-qter region. These data and previous reports, therefore, suggest that the related iron-transport proteins are closely linked and may be under coordinate regulation. However, studies of several cell lines that exhibit up-regulation of human transferrin receptor expression with cellular proliferation, and down-regulation of receptor with increased transferrin-iron in the media, showed no change in expression of p97 antigen. p97 antigenic expression increased when melanocyte-stimulating hormone was added to a human melanoma cell line in tissue culture. These latter studies suggest that in mammalian cells the two proteins do not show coordinate regulation.(ABSTRACT TRUNCATED AT 250 WORDS) |
| ISSN | 00029297 |
| e-ISSN | 15376605 |
| Journal | The American Journal of Human Genetics |
| Issue Number | 4 |
| Volume Number | 38 |
| Language | English |
| Publisher | Cell Press (on behalf of American Society of Human Genetics) |
| Publisher Date | 1986-04-01 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Carrier Proteins Genetics Chromosome Mapping Chromosomes, Human, 1-3 Neoplasm Proteins Receptors, Cell Surface Animals Antigens, Neoplasm Chromosome Banding Cricetinae Cricetulus Culture Techniques Hybrid Cells Iron-binding Proteins Melanoma Immunology Melanoma-specific Antigens Rabbits Receptors, Transferrin Transferrin-binding Proteins Research Support, U.s. Gov't, Non-p.h.s. Research Support, U.s. Gov't, P.h.s. Discipline Human Genetics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Genetics Genetics (clinical) |
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