Real-time PCR detection of aldoxime dehydratase genes in nitrile-degrading microorganisms

Tríona Marie Dooley-Cullinane, Catherine O’Reilly, Lee Coffey

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


Aldoxime dehydratase catalyses the conversion of aldoximes to their corresponding nitriles. Utilization of the aldoxime–nitrile metabolising enzyme pathway can facilitate the move towards a greener chemistry. In this work, a real-time PCR assay was developed for the detection of aldoxime dehydratase genes in aldoxime/nitrile metabolising microorganisms which have been purified from environmental sources. A conventional PCR assay was also designed allowing gene confirmation via sequencing. Aldoxime dehydratase genes were identified in 30 microorganisms across 11 genera including some not previously shown to harbour the gene. The assay displayed a limit of detection of 1 pg/μL DNA or 7 CFU/reaction. This real-time PCR assay should prove valuable in the high-throughput screening of micro-organisms for novel aldoxime dehydratase genes towards pharmaceutical and industrial applications.

Original languageEnglish
Pages (from-to)271-279
Number of pages9
JournalAntonie van Leeuwenhoek, International Journal of General and Molecular Microbiology
Issue number2
Publication statusPublished - 01 Feb 2017


  • Aldoxime dehydratase
  • Aldoxime–nitrile pathway
  • Amidase
  • High-throughput
  • Nitrile hydratase
  • Real-time PCR


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