ArticlePlant physiology2014
Comparing the in vivo function of α-carboxysomes and β-carboxysomes in two model cyanobacteria.
Article in Plant physiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 57 papers.
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Who cites it
57 citing papers in PubMed, 104 citations in OpenAlex.
- Rubisco kinetic diversity and effectiveness of CO2-concentrating mechanisms in aquatic photosynthetic organisms.Plant physiology · 2026Review
- Functional and structural insights into cyanobacterial COThe Plant journal : for cell and molecular biology · 2026Review
- Functional characterization of bicarbonate transporters from the cyanobacterial SbtA2 family and subsequent expression in tobacco.Journal of experimental botany · 2026Article
- Gas exchange measurements of carboxysome mutants reveal insights into cyanobacterial carbon-concentrating mechanisms.Plant physiology · 2026Article
- Carbon dioxide concentration alters cyanobacterial carboxysome encapsulation and redox state in Synechococcus sp. PCC 7002.Communications biology · 2026Article
- Architectural and biochemical advances in understanding microbial COThe Plant journal : for cell and molecular biology · 2026Review
- [COResearch square · 2026Article
- Recent insights into α-carboxysome structure, mechanism, and assembly.Journal of bacteriology · 2026Review
- Heterologous expression in E. coli reveals that bicarbonate transporter BicA2 mediates carbon uptake in marine Prochlorococcus spp.The ISME journal · 2026Article
- Proteomic analysis of metabolic adaptation in a unicellular cyanobacterium during light-dark cycles and nitrogen fixation.Scientific reports · 2025Article
- In vivo directed evolution of an ultrafast Rubisco from a semianaerobic environment imparts oxygen resistance.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Understanding carboxysomes to enhance carbon fixation in crops.Biochemical Society transactions · 2025Review
- Engineering COPlant communications · 2025Article
- Towards assembling functional cyanobacterial β-carboxysomes in Oryza sativa chloroplasts.Functional & integrative genomics · 2025Article
- Rubisco packaging and stoichiometric composition of the native β-carboxysome in Synechococcus elongatus PCC7942.Plant physiology · 2024Article
- The rDNA Diversity, Interseasonal Dynamic, and Functional Role of CyanobacteriaPlants (Basel, Switzerland) · 2024Article
- Atomic view of photosynthetic metabolite permeability pathways and confinement in synthetic carboxysome shells.Proceedings of the National Academy of Sciences of the United States of America · 2024Article
- Proteomic changes orchestrate metabolic acclimation of a unicellular diazotrophic cyanobacterium during light-dark cycle and nitrogen fixation states.bioRxiv : the preprint server for biology · 2024Article
- A systematic exploration of bacterial form I rubisco maximal carboxylation rates.The EMBO journal · 2024Article
- Cyanobacterial α-carboxysome carbonic anhydrase is allosterically regulated by the Rubisco substrate RuBP.Science advances · 2024Article
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Authors and funding
4 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The carbon dioxide (CO2)-concentrating mechanism of cyanobacteria is characterized by the occurrence of Rubisco-containing microcompartments called carboxysomes within cells. The encapsulation of Rubisco allows for high-CO2 concentrations at the site of fixation, providing an advantage in low-CO2 environments. Cyanobacteria with Form-IA Rubisco contain α-carboxysomes, and cyanobacteria with Form-IB Rubisco contain β-carboxysomes. The two carboxysome types have arisen through convergent evolution, and α-cyanobacteria and β-cyanobacteria occupy different ecological niches. Here, we present, to our knowledge, the first direct comparison of the carboxysome function from α-cyanobacteria (Cyanobium spp. PCC7001) and β-cyanobacteria (Synechococcus spp. PCC7942) with similar inorganic carbon (Ci; as CO2 and HCO3-) transporter systems. Despite evolutionary and structural differences between α-carboxysomes and β-carboxysomes, we found that the two strains are remarkably similar in many physiological parameters, particularly the response of photosynthesis to light and external Ci and their modulation of internal ribulose-1,5-bisphosphate, phosphoglycerate, and Ci pools when grown under comparable conditions. In addition, the different Rubisco forms present in each carboxysome had almost identical kinetic parameters. The conclusions indicate that the possession of different carboxysome types does not significantly influence the physiological function of these species and that similar carboxysome function may be possessed by each carboxysome type. Interestingly, both carboxysome types showed a response to cytosolic Ci, which is of higher affinity than predicted by current models, being saturated by 5 to 15 mm Ci. This finding has bearing on the viability of transplanting functional carboxysomes into the C3 chloroplast.
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