N-Acetyltaurine dissimilated via taurine by Delftia acidovorans NAT

The naturally occurring sulfonate N-acetyltaurine was synthesized chemically and its identity was confirmed. Aerobic enrichment cultures for bacteria able to utilize N-acetyltaurine as sole source of fixed nitrogen or as sole source of carbon were successful. One representative isolate, strain NAT, which was identified as a strain of Delftia acidovorans, grew with N-acetyltaurine as carbon source and excreted stoichiometric amounts of sulfate and ammonium. Inducible enzyme activities were measured in crude extracts of this organism to elucidate the degradative pathway. Cleavage of N-acetyltaurine by a highly active amidase yielded acetate and taurine. The latter was oxidatively deaminated by taurine dehydrogenase to ammonium and sulfoacetaldehyde. This key intermediate of sulfonate catabolism was desulfonated by the known reaction of sulfoacetaldehyde acetyltransferase to sulfite and acetyl phosphate, which was further degraded to enter central metabolism. A degradative pathway including transport functions is proposed.

Subject (DDC)

540 Chemistry

Keywords

Sulfoacetaldehyde acetyltransferase,Xsc,Amidase,Desulfonation

Cite This

ISO 690

MAYER, Jutta, Karin DENGER, Theo H. M. SMITS, Klaus HOLLEMEYER, Ulrich GROTH, Alasdair M. COOK, 2006. N-Acetyltaurine dissimilated via taurine by Delftia acidovorans NAT. In: Archives of Microbiology. 186(1), pp. 61-67. ISSN 0302-8933. eISSN 1432-072X. Available under: doi: 10.1007/s00203-006-0123-7

BibTex

@article{Mayer2006NAcet-9927,
  year={2006},
  doi={10.1007/s00203-006-0123-7},
  title={N-Acetyltaurine dissimilated via taurine by Delftia acidovorans NAT},
  number={1},
  volume={186},
  issn={0302-8933},
  journal={Archives of Microbiology},
  pages={61--67},
  author={Mayer, Jutta and Denger, Karin and Smits, Theo H. M. and Hollemeyer, Klaus and Groth, Ulrich and Cook, Alasdair M.}
}

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    <dcterms:abstract xml:lang="eng">The naturally occurring sulfonate N-acetyltaurine was synthesized chemically and its identity was confirmed. Aerobic enrichment cultures for bacteria able to utilize N-acetyltaurine as sole source of fixed nitrogen or as sole source of carbon were successful. One representative isolate, strain NAT, which was identified as a strain of Delftia acidovorans, grew with N-acetyltaurine as carbon source and excreted stoichiometric amounts of sulfate and ammonium. Inducible enzyme activities were measured in crude extracts of this organism to elucidate the degradative pathway. Cleavage of N-acetyltaurine by a highly active amidase yielded acetate and taurine. The latter was oxidatively deaminated by taurine dehydrogenase to ammonium and sulfoacetaldehyde. This key intermediate of sulfonate catabolism was desulfonated by the known reaction of sulfoacetaldehyde acetyltransferase to sulfite and acetyl phosphate, which was further degraded to enter central metabolism. A degradative pathway including transport functions is proposed.</dcterms:abstract>
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Bibliography of Konstanz

Yes