| http://purl.uniprot.org/citations/15716025 | http://www.w3.org/1999/02/22-rdf-syntax-ns#type | http://purl.uniprot.org/core/Journal_Citation |
| http://purl.uniprot.org/citations/15716025 | http://www.w3.org/2000/01/rdf-schema#comment | "Melanotransferrin (MTf) is a transferrin homologue initially identified in melanoma cells. Serum transferrin (Tf) contains two iron (Fe)-binding sites and plays a vital role in Fe transport. However, human MTf has only a single, high affinity, Fe-binding site. Furthermore, while isolated MTf can bind Fe, it plays little role in Fe uptake by cells and its function remains elusive. To further understand the biological role of this molecule, we examined the expression profile of mouse MTf (mMTf) and human MTf (hMTf) and the splice variant of the latter. Analysis of mMTf in 18 normal mouse tissues and 4 embryonic stages (7-17 days) using an RNA dot blot demonstrated it was expressed at high levels in the pancreas, salivary gland and epididymis of the adult, while embryonic tissues showed low expression. The expression pattern was very different from that of mouse transferrin receptor 1 (TfR1) mRNA, which was found at high levels in the spleen and embryo. Using the more sensitive RT-PCR technique, mMTf expression was demonstrated across all 24 normal mouse tissues assessed. Analysis of the mMTf genomic sequence predicted only one mMTf transcript, although two putative transcripts were found in the testis using Northern blotting. An alternate hMTf transcript, h delta MTf, has been identified by others, although its tissue distribution was not previously examined. In human heart and skeletal muscle, three putative hMTf transcripts were identified at approximately 2, 3 and 4 kb, the smallest transcript being consistent with h delta MTf. The two larger transcripts were also found in 10 other human tissues. The h delta MTf transcript was detected using RT-PCR and Southern blotting in tumour-derived cell lines, with the highest expression being identified in melanoma cells. Immunohistochemistry showed that hMTf was expressed primarily within epithelia. In fact, the most pronounced expression was within the epidermis of the skin, tubules of the kidney and the ducts of sweat and salivary glands. The distribution of MTf and its splice variants may provide clues to their possible biological roles."xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.org/dc/terms/identifier | "doi:10.1016/j.bbagen.2004.12.002"xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/author | "Richardson D.R."xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/author | "Dunn L.L."xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/author | "Sekyere E.O."xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/date | "2005"xsd:gYear |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/name | "Biochim Biophys Acta"xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/pages | "131-142"xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/title | "Examination of the distribution of the transferrin homologue, melanotransferrin (tumour antigen p97), in mouse and human."xsd:string |
| http://purl.uniprot.org/citations/15716025 | http://purl.uniprot.org/core/volume | "1722"xsd:string |
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