期刊
JOURNAL OF ADVANCED RESEARCH
卷 47, 期 -, 页码 75-92出版社
ELSEVIER
DOI: 10.1016/j.jare.2022.07.011
关键词
Carbon fixation; Autotrophic; Thermophiles; Omics; Biochemistry; Synthetic pathway
The article summarizes the six known natural carbon-fixation pathways and outlines proposed additions to the list. It also discusses the importance of synthetic carbon fixation and the metabolism of thermophilic microorganisms in this field.
Background: Autotrophic carbon fixation is the primary route through which organic carbon enters the biosphere, and it is a key step in the biogeochemical carbon cycle. The Calvin-Benson-Bassham pathway, which is predominantly found in plants, algae, and some bacteria (mainly cyanobacteria), was previously considered to be the sole carbon-fixation pathway. However, the discovery of a new carbon-fixation path-way in sulfurous green bacteria almost two decades ago encouraged further research on previously over-looked ancient carbon-fixation pathways in taxonomically and phylogenetically distinct microorganisms.Aim of Review: In this review, we summarize the six known natural carbon-fixation pathways and outline the newly proposed additions to this list. We also discuss the recent achievements in synthetic carbon fix-ation and the importance of the metabolism of thermophilic microorganisms in this field.Key Scientific Concepts of Review: Currently, at least six carbon-fixation routes have been confirmed in Bacteria and Archaea. Other possible candidate routes have also been suggested on the basis of emerging omics data analyses, expanding our knowledge and stimulating discussions on the importance of these pathways in the way organisms acquire carbon. Notably, the currently known natural fixation routes can-not balance the excessive anthropogenic carbon emissions in a highly unbalanced global carbon cycle. Therefore, significant efforts have also been made to improve the existing carbon-fixation pathways and/or design new efficient in vitro and in vivo synthetic pathways.(c) 2023 The Authors. Published by Elsevier B.V. on behalf of Cairo University. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
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