Literature DB >> 9075197

Biotransformations of tocopherols by Streptomyces catenulae.

B Rousseau1, L Dostal, J P Rosazza.   

Abstract

Streptomyces catenulae catalyzed the oxidation of alpha-tocopherol to alpha-tocopherolquinone. Nitrotocopherols isolated from S. catenulae grown in defined culture medium containing delta- and gamma-tocopherols are formed by a combination of enzymatic nitrate reduction to nitrite, and subsequent nonenzymatic acid-catalyzed nitration. The incorporation of 15N18O3-into nitrated tocopherols confirmed the origin of the nitrating species. Structures of chromatographically purified products obtained from S. catenulae transformations of tocopherols were deduced by spectral (mass spectrometry, 1H-, and 13C-nuclear magnetic resonance) analyses.

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Year:  1997        PMID： 9075197     DOI： 10.1007/s11745-997-0012-5

Source DB:  PubMed          Journal:  Lipids        ISSN： 0024-4201            Impact factor:   1.880


  6 in total

1.  Inhibition of amine-nitrite hepatotoxicity by alpha-tocopherol.

Authors:  J J Kamm; T Dashman; H Newmark; W J Mergens
Journal:  Toxicol Appl Pharmacol       Date:  1977-09       Impact factor: 4.219

2.  Microbiological transformation of 2,2,4-trimethyl-7-tert-octyl-6-hydroxychroman.

Authors:  J R Schaeffer; C T Goodhue
Journal:  J Org Chem       Date:  1971-08-27       Impact factor: 4.354

3.  [Nitrotocopherols].

Authors:  S Marcinkiewicz
Journal:  Acta Pol Pharm       Date:  1967       Impact factor: 0.330

4.  Nitrosamine formation by denitrifying and non-denitrifying bacteria: implication of nitrite reductase and nitrate reductase in nitrosation catalysis.

Authors:  S Calmels; H Ohshima; H Bartsch
Journal:  J Gen Microbiol       Date:  1988-01

5.  Bacterially catalysed N-nitrosation reactions and their relative importance in the human stomach.

Authors:  S A Leach; M Thompson; M Hill
Journal:  Carcinogenesis       Date:  1987-12       Impact factor: 4.944

6.  Products of gamma-tocopherol reaction with NO2 and their formation in rat insulinoma (RINm5F) cells.

Authors:  R V Cooney; P J Harwood; A A Franke; K Narala; A K Sundström; P O Berggren; L J Mordan
Journal:  Free Radic Biol Med       Date:  1995-09       Impact factor: 7.376
  6 in total
  2 in total

1.  Biotransformation of 2-benzoxazolinone and 2-hydroxy-1,4-benzoxazin-3-one by endophytic fungi isolated from Aphelandra tetragona.

Authors:  M Zikmundová; K Drandarov; L Bigler; M Hesse; C Werner
Journal:  Appl Environ Microbiol       Date:  2002-10       Impact factor: 4.792

2.  6-Hydroxy-5-nitrobenzo[d]oxazol-2(3H)-one-A degradable derivative of natural 6-Hydroxybenzoxazolin-2(3H)-one produced by Pantoea ananatis.

Authors:  Margot Schulz; Dieter Sicker; Oliver Schackow; Lothar Hennig; Diana Hofmann; Ulrich Disko; Marina Ventura; Kateryna Basyuk
Journal:  Commun Integr Biol       Date:  2017-03-13
  2 in total

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