Abstract:
:Purple sulfur bacterium Thiocapsa roseopersicina strain BBS requiring vitamin B12 may grow in the dark in media containing no other organic compounds. Under such conditions the cells oxidize sulfide and thiosulfate with the use of O2 and assimilate carbon dioxide. After 10--30s assimilation of NaH14CO3 about 60% of radioactivity is found in phosphorylated compounds characteristic for the reductive pentose phosphate cycle. The possibility of the function of this cycle in the dark in the presence of O2 is confirmed by the capacity of cells grown under such conditions to synthesize ribulose-1,5-diphosphate carboxylase. All this evidence suggests the ability of T. roseopersicina to change from phototrophy to aerobic chemolithoautotrophy.
journal_name
Arch Microbioljournal_title
Archives of microbiologyauthors
Kondratieva EN,Zhukov VG,Ivanovsky RN,Petushkova UP,Monosov EZdoi
10.1007/BF00454854subject
Has Abstractpub_date
1976-07-01 00:00:00pages
287-92issue
3eissn
0302-8933issn
1432-072Xjournal_volume
108pub_type
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