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Modifying Levels of Maternal Dietary Folic Acid or Choline to Study the Impact of Deficiencies on Offspring Health Outcomes
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Folate-mediated one-carbon metabolism.

Jennifer T Fox1, Patrick J Stover

  • 1Graduate Field of Biochemistry, Molecular and Cellular Biology, Cornell University, Ithaca, New York 14853, USA.

Vitamins and Hormones
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PubMed
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Tetrahydrofolate (THF) polyglutamates are vital cofactors in one-carbon metabolism, essential for biosynthesis across cellular compartments. Understanding their complex roles and regulation is key to addressing associated pathologies.

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One-step Metabolomics: Carbohydrates, Organic and Amino Acids Quantified in a Single Procedure

Published on: June 25, 2010

Area of Science:

  • Biochemistry
  • Cell Biology
  • Metabolic Pathways

Background:

  • Tetrahydrofolate (THF) polyglutamates are crucial cofactors for one-carbon unit transfer and activation.
  • THF-mediated one-carbon metabolism is a complex network compartmentalized within cytoplasm, mitochondria, and nucleus.
  • This metabolism is vital for synthesizing purines, thymidylate, methionine, and processing various metabolic intermediates.

Purpose of the Study:

  • To review the current understanding of mammalian folate-mediated one-carbon metabolism.
  • To elucidate the cellular compartmentation of one-carbon metabolism.
  • To identify knowledge gaps limiting the understanding of one-carbon metabolism and its regulation.

Main Methods:

  • Literature review and synthesis of existing research on folate metabolism.
  • Analysis of biochemical pathways and cellular localization of one-carbon metabolism.
  • Identification of unresolved questions and areas for future research.

Main Results:

  • One-carbon metabolism occurs in the cytoplasm (purine/thymidylate synthesis), mitochondria (formylated tRNA, catabolism, interconversions), and nucleus (thymidylate biosynthesis).
  • Mitochondria serve as a primary source of one-carbon units for cytoplasmic processes.
  • Disruptions in folate metabolism are linked to pathologies, but underlying mechanisms remain unclear.

Conclusions:

  • Folate-mediated one-carbon metabolism is a highly compartmentalized and essential process in mammals.
  • Further research is needed to establish the biochemical mechanisms linking folate metabolism disruptions to pathologies.
  • Clarifying regulatory mechanisms and pathway interactions is critical for understanding and treating folate-associated diseases.