title: Polyamines in photosynthetic eubacteria and extreme-halophilic archaebacteria.
abstract: Qualitative and quantitative determinations of polyamines have been done in 4 photosynthetic eubacteria and 6 extreme-halophilic archaebacteria. For comparison, 5 moderate-halophilic eubacteria were also analyzed to determine their polyamine contents. Not only putrescine and spermidine but also homospermidine were found in the photosynthetic eubacteria, especially in the N2-fixing species, Rhodospirillum and Chromatium. Norspermidine, norspermine, and spermine were not detected in the phototrophic eubacteria. No appreciable amount of any polyamine was found in extreme-halophilic archaebacteria, Halobacterium and Halococcus, while moderate-halophilic eubacteria contained quite high concentrations of putrescine and spermidine and cadaverine. When arginine was incubated with cell lysates of these two archaebacteria, appreciable amounts of agmatine were produced; neither putrescine nor cadaverine was formed in the presence of ornithine or lysine. No detectable amount of spermidine was produced by the lysates on incubation with putrescine.
mesh_terms: D001105:Archaea / Q000378:metabolism*; D001419:Bacteria / Q000378:metabolism*; D002844:Chromatium / Q000378:metabolism; D005051:Eubacterium / Q000378:metabolism*; D006216:Halobacteriaceae / Q000378:metabolism; D006217:Halobacterium / Q000378:metabolism; D008837:Micrococcus / Q000378:metabolism; D010788:Photosynthesis; D011073:Polyamines / Q000378:metabolism*; D012242:Rhodobacter sphaeroides / Q000378:metabolism; D012247:Rhodospirillum rubrum / Q000378:metabolism
chemical_list: D011073:Polyamines