Iminodiacetate and nitrilotriacetate degradation by Kluyveromyces marxianus IMB3

Nigel Ternan, Geoffrey McMullan

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


The thermotolerant yeast Kluyveromyces marxianus IMB3 was capable of utilising either iminodiacetate or nitrilotriacetate as a sole source of nitrogen for growth. Cell extracts contained iminodiacetate dehydrogenase and nitrilotriacetate monooxygenase activities, suggesting the presence in the yeast of orthologues of these bacterial enzymes. The activities were not detectable in complete medium-growth cells, nor in nitrogen-starved cells, suggesting an inducible biodedgradation pathway for biodegradation of these xenobiotics, which has not been previously reported in a eukaryotic cell system. This observation emphasises the hitherto unrealised importance of yeast strains in the biodegradation of xenobiotics in the environment. (C) 2002 Elsevier Science.
Original languageEnglish
Pages (from-to)802-805
JournalBiochemical and Biophysical Research Communications
Issue number2
Publication statusPublished (in print/issue) - Jan 2002


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