Arginine catabolism by Thermanaerovibrio acidaminovorans |
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Authors: | Plugge C M Stams A J |
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Affiliation: | Laboratory of Microbiology, Wageningen University, H. van Suchtelenweg 4, 6703 CT, Wageningen, The Netherlands. caroline.plugge@algemeen.micr.wag-ur.nl |
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Abstract: | The arginine catabolism of Thermanaerovibrio acidaminovorans was investigated. T. acidaminovorans was able to produce approximately 0.4--0.5 mol citrulline and 0.5--0.6 mol ornithine from 1 mol of arginine. However, in a methanogenic coculture with Methanobacterium thermoautotrophicum Z245 1 mol arginine was converted to approximately 1 mol of propionate, 0.5 mol acetate, 4 mol ammonia and 4 mol hydrogen; citrulline and ornithine were not formed. Enzyme measurements indicated the presence of the arginine deiminase pathway (ADI) in cells of T. acidaminovorans growing on arginine. |
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Keywords: | Arginine catabolism ADI (arginine deiminase) pathway Interspecies hydrogen transfer |
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