Abstract:
:The utilization of carnitine and carnitine derivatives (O-acylcarnitines, carnitine carboxylderivatives) and structure-related trimethylammonium-compounds (betaines and nitrogen-bases) by Acinetobacter calcoaceticus was studied by means of the control of growth and the quantitative detection of metabolites. The strain grew only on L-carnitine, L-O-acylcarnitines, and gamma-butyrobetaine as the sole carbon sources. The utilization of these compounds and the growth correlated with the cleavage of the C-N bond and thereby with the formation of trimethylamin. D-Carnitine was metabolized, if an additional carbon source, like L-carnitine, was present in the incubation mixture, or if the bacteria were preincubated with L- or DL-carnitine, but no growth was observed on D-carnitine as the sole carbon source. The bacteria oxidized choline to glycinebetaine in the presence of additional carbon sources, glycinebetaine itself was not assimilated. With regard to the catabolism of quaternary nitrogen compounds Acinetobacter calcoaceticus shows a different pathway in comparison with other bacterial species metabolizing carnitine.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Kleber H-P,Seim H,Aurich H,Strack Edoi
10.1007/BF00429336subject
Has Abstractpub_date
1977-03-01 00:00:00pages
201-6issue
2eissn
0302-8933issn
1432-072Xjournal_volume
112pub_type
杂志文章abstract::The Roseobacter clade, belonging to the family Rhodobacteraceae of the class Alphaproteobacteria, is one of the major bacterial groups in marine environments. A remarkable wealth of diverse large plasmids has been detected in members of this lineage. Here, we analysed the genome structure and extrachromosomal DNA cont...
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