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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
26
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pubmed:dateCreated |
1992-10-19
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pubmed:abstractText |
Expression of metallothionein (MT) genes is regulated by heavy metals mainly at the transcriptional level, via cis-acting elements called the metal-responsive elements (MREs). A HeLa cell nuclear factor that recognizes MREs of the human MTIIA (hMTIIA) gene, MREBP, was characterized. Mobility shift assay and DNase I footprinting experiments showed that MREBP binds specifically to several MREs present upstream of the hMTIIA gene. Cadmium and zinc ions inhibited binding of MREBP to a MRE at high concentrations, suggesting a role of MREBP in the negative regulation of the hMTIIA gene. MREBP was partially purified by passing the HeLa nuclear extract over heparin-agarose, Sephacryl S-300, and MRE-Sepharose affinity columns. Blotting experiments showed that a polypeptide with an M(r) of 112,000 is responsible for the MREBP activity.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Cadmium,
http://linkedlifedata.com/resource/pubmed/chemical/DNA,
http://linkedlifedata.com/resource/pubmed/chemical/DNA Probes,
http://linkedlifedata.com/resource/pubmed/chemical/Metallothionein,
http://linkedlifedata.com/resource/pubmed/chemical/Zinc
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pubmed:status |
MEDLINE
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pubmed:month |
Sep
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pubmed:issn |
0021-9258
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
15
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pubmed:volume |
267
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pubmed:geneSymbol |
MTII<down>A</down>
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
18659-64
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pubmed:dateRevised |
2004-11-17
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pubmed:meshHeading |
pubmed-meshheading:1526997-Base Sequence,
pubmed-meshheading:1526997-Cadmium,
pubmed-meshheading:1526997-Cell Nucleus,
pubmed-meshheading:1526997-DNA,
pubmed-meshheading:1526997-DNA Probes,
pubmed-meshheading:1526997-Electrophoresis, Polyacrylamide Gel,
pubmed-meshheading:1526997-Gene Expression Regulation,
pubmed-meshheading:1526997-HeLa Cells,
pubmed-meshheading:1526997-Humans,
pubmed-meshheading:1526997-Metallothionein,
pubmed-meshheading:1526997-Molecular Sequence Data,
pubmed-meshheading:1526997-Substrate Specificity,
pubmed-meshheading:1526997-Zinc
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pubmed:year |
1992
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pubmed:articleTitle |
A nuclear factor that recognizes the metal-responsive elements of human metallothionein IIA gene.
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pubmed:affiliation |
Department of Experimental Toxicology, National Institute of Industrial Health, Kawasaki, Japan.
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pubmed:publicationType |
Journal Article
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