Autotrophic Carbon Dioxide Assimilation in Thermoproteales Revisited
نویسندگان
چکیده
منابع مشابه
Comment on "A 3-hydroxypropionate/4-hydroxybutyrate autotrophic carbon dioxide assimilation pathway in Archaea".
Berg et al. (Reports, 14 December 2007, p. 1782) reported the discovery of an autotrophic carbon dioxide-fixation pathway in Archaea and implicated a substantial role of this pathway in global carbon cycling based on sequence analysis of Global Ocean Sampling data. We question the validity of the latter claim.
متن کاملA 3-hydroxypropionate/4-hydroxybutyrate autotrophic carbon dioxide assimilation pathway in Archaea.
The assimilation of carbon dioxide (CO2) into organic material is quantitatively the most important biosynthetic process. We discovered that an autotrophic member of the archaeal order Sulfolobales, Metallosphaera sedula, fixed CO2 with acetyl-coenzyme A (acetyl-CoA)/propionyl-CoA carboxylase as the key carboxylating enzyme. In this system, one acetyl-CoA and two bicarbonate molecules were redu...
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The incorporation and distribution of activity from (14)CO(2) was investigated under autotrophic conditions in the facultative photoautotroph, Rhodospirillum rubrum, with cells cultured on hydrogen, carbon dioxide, and ammonium sulfate. In 1 second (14)CO(2) fixation experiments essentially all of the activity was found in 3-phosphoglyceric acid: plotted against time percent incorporation into ...
متن کاملHeavy Carbon as a Tracer in Heterotrophic Carbon Dioxide Assimilation*
The first proof that heterotrophic, non-photosynthetic bacteria can fix carbon dioxide was presented in 1935 by Wood and Werkman (15). This investigation introduced the first experimental evidence that carbon dioxide serves as a building material in synthetic reactions of all forms of life, whether simple or complex. The synthesis of citric acid from oxalacetate by avian tissue was shown by Kre...
متن کاملAssimilation of carbon dioxide by hydrogen bacteria.
Autotrophic organisms can use carbon dioxide as their sole source of carbon. Within this group, the chemosynthetic bacteria secure energy for carbon dioxide assimilation by the oxidation of simple inorganic substances, although the photosynthetic organisms obtain this energy from light. The phylogenetic relationships of the chemosynthetic bacteria to the photosynthetic and to the heterotrophic ...
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ژورنال
عنوان ژورنال: Journal of Bacteriology
سال: 2009
ISSN: 0021-9193,1098-5530
DOI: 10.1128/jb.00145-09