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Cited by 434

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Multiple Rubisco forms in proteobacteria: their functional significance in relation to CO2 acquisition by the CBB cycle

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Badger, Murray Ronald, Bek, Emily Jane·2008·Journal of Experimental Botany

Abstract

Rubisco is the predominant enzymatic mechanism in the biosphere by which autotrophic bacteria, algae, and terrestrial plants fix CO(2) into organic biomass via the Calvin-Benson-Basham reductive pentose phosphate pathway. Rubisco is not a perfect catalyst, suffering from low turnover rates, a low affinity for its CO(2) substrate, and a competitive inhibition by O(2) as an alternative substrate. As a consequence of changing environmental conditions over the past 3.5 billion years, with decreasing CO(2) and increasing O(2) in the atmosphere, Rubisco has evolved into multiple enzymatic forms with a range of kinetic properties, as well as co-evolving with CO(2)-concentrating mechanisms to cope with the different environmental contexts in which it must operate. The most dramatic evidence of this is the occurrence of multiple forms of Rubisco within autotrophic proteobacteria, where Forms II, IC, IBc, IAc, and IAq can be found either singly or in multiple combinations within a particular bacterial genome. Over the past few years there has been increasing availability of genomic sequence data for bacteria and this has allowed us to gain more extensive insights into the functional significance of this diversification. This paper is focused on summarizing what is known about the diversity of Rubisco forms, their kinetic properties, development of bacterial CO(2)-concentrating mechanisms, and correlations with metabolic flexibility and inorganic carbon environments in which proteobacteria perform various types of obligate and facultative chemo- and photoautotrophic CO(2) fixation.

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Crossref · 10.1093/jxb/erm297

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Metadata

Authors
Badger, M. R., & Bek, E. J.
Venue
Journal of Experimental Botany
Published
2008-02-02
Volume
59
Issue
7
Pages
1525-1541
ISSN
  • 0022-0957 (ISSN-L)
  • 1460-2431
OpenAlex
W2163066505
Cited by
434
References
48
FWCI
5.34
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Multiple Rubisco forms in proteobacteria: their functional significance in relation to CO2 acquisition by the CBB cycle. https://app.cochat.ai/papers/10.1093/jxb/erm297
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Badger, M. R., & Bek, E. J. (2008). Multiple Rubisco forms in proteobacteria: their functional significance in relation to CO2 acquisition by the CBB cycle. Journal of Experimental Botany. https://doi.org/10.1093/jxb/erm297

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Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.