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Related Concept Videos

Labeling DNA Probes03:31

Labeling DNA Probes

DNA probes are fragments of DNA labeled with a reporter tag to enable their detection or purification. The resulting labeled DNA probes can then hybridize to target nucleic acid sequences through complementary base-pairing, and may be used to recover or identify these regions.
Radioisotopes, fluorophores, or small molecule binding partners like biotin or digoxigenin, are the most widely used reporter tags for labeling DNA probes. These labels can be attached to the probe DNA molecule via...

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Inverse stable isotopic labeling for natural product characterization and discovery.

Jose Miguel D Robes1, Aaron W Puri1

  • 1Department of Chemistry and the Henry Eyring Center for Cell and Genome Science, University of Utah, Salt Lake City, UT 84112, Utah, USA. a.puri@utah.edu.

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|June 16, 2026
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Inverse stable isotopic labeling (InverSIL) provides a flexible method for natural product research when standard labeling precursors are unavailable. This technique uses labeled media and unlabeled precursors to identify biosynthetic pathways and genes.

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Area of Science:

  • Natural Products Research
  • Metabolomics
  • Synthetic Biology

Background:

  • Stable isotopic labeling is crucial for natural product research.
  • Conventional labeling methods face limitations due to precursor availability.

Purpose of the Study:

  • To review the applications of inverse stable isotopic labeling (InverSIL).
  • To highlight InverSIL's utility in characterizing natural product biosynthesis and in genome mining.
  • To discuss the advantages and limitations of the InverSIL approach.

Main Methods:

  • Organisms are cultured in isotopically substituted media.
  • Media is supplemented with precursors at natural isotopic abundance.
  • Isotopic contrast is used to detect precursor incorporation.

Main Results:

  • InverSIL facilitates the characterization of natural product biosynthetic pathways and structures.
  • It aids in linking biosynthetic genes to their corresponding natural products through genome mining.
  • The review details specific applications and contexts where InverSIL is advantageous.

Conclusions:

  • InverSIL is a versatile strategy for advancing natural products research.
  • Broader adoption of InverSIL is encouraged for overcoming precursor limitations.
  • This method enhances the study of natural product biosynthesis and gene function.