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Metal elements and gene expression

R J Cousins1

  • 1Center for Nutritional Sciences and Food Science, University of Florida, Gainesville 32611.

Annual Review of Nutrition
|January 1, 1994
PubMed
Summary
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Metals regulate gene transcription through specific DNA sequences, impacting cellular functions. This metal-mediated gene regulation is crucial from microbes to mammals.

Area of Science:

  • Molecular Biology
  • Genetics
  • Biochemistry

Background:

  • Metals play structural and catalytic roles in gene expression.
  • Dietary metal supply influences intracellular metal pools.
  • Metalloregulatory proteins bind metal response elements (MREs) in gene promoters.

Purpose of the Study:

  • To explore the transcriptional regulation of genes by metals.
  • To understand the role of intracellular metal pools in gene expression.
  • To investigate the distribution and function of MREs and metalloregulatory proteins.

Main Methods:

  • Analysis of existing data on metal regulation of gene expression.
  • Review of the literature on metalloregulatory proteins and MRE sequences.
  • Comparative analysis across microbial and mammalian systems.

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Main Results:

  • Transcriptional regulation by metals is a distinct biological function.
  • Intracellular metal pools are critical for metalloregulatory proteins.
  • MRE sequences and metalloregulatory proteins are conserved across species.
  • Positive transcriptional regulation by metals is well-documented, but negative regulation is possible.

Conclusions:

  • Metal-dependent transcriptional regulation is a fundamental biological process.
  • Understanding metal roles in gene expression is vital for molecular biology.
  • Further research is needed to fully delineate metal involvement in gene regulation.