Plant biology: Designs on Rubisco

  title={Plant biology: Designs on Rubisco},
  author={Howard Griffiths},
Rubisco is said to be both the most important enzyme on Earth and surprisingly inefficient. Yet an understanding of the reaction by which it fixes CO2 suggests that evolution has made the best of a bad job. 

Paper Mentions

Directions for Optimization of Photosynthetic Carbon Fixation: RuBisCO's Efficiency May Not Be So Constrained After All
The ubiquitous enzyme Ribulose 1,5-bisphosphate carboxylase-oxygenase (RuBisCO) fixes atmospheric carbon dioxide within the Calvin-Benson cycle that is utilized by most photosynthetic organisms.Expand
Self-Assembly, Organisation, Regulation, and Engineering of Carboxysomes: CO2-Fixing Prokaryotic Organelles
Carboxysomes are a group of bacterial microcompartments (BMCs) that encapsulate Rubisco and carbonic anhydrase to enhance CO2 fixation in cells. Through self-assembly of hundreds of proteins into aExpand
Expanding knowledge of the Rubisco kinetics variability in plant species: environmental and evolutionary trends.
In species adapted to particular environments, including carnivorous plants, crassulacean acid metabolism species and C(3) plants from aquatic and arid habitats, Rubisco has evolved towards increased efficiency, as demonstrated by a higher k(cat)(c)/K(c) ratio. Expand
Evolution of C4 plants: a new hypothesis for an interaction of CO2 and water relations mediated by plant hydraulics
  • C. Osborne, L. Sack
  • Biology, Medicine
  • Philosophical Transactions of the Royal Society B: Biological Sciences
  • 2012
It is hypothesized that excessive demand for water transport associated with low CO2, high light and temperature would have selected for C4 photosynthesis not only to increase the efficiency and rate of photosynthesis, but also as a water-conserving mechanism. Expand
Carboxylations and Decarboxylations
Except in science fiction, all life as we know it today is based on carbon chemistry. Living beings either assimilate the required carbon from already made organic compounds (most heterotrophs) orExpand
Hallmarks of an Enzyme Catalyst
All reactions relevant to biology belong to one of the two groups: those with a kinetic barrier and those with a thermodynamic barrier. The kinetic barrier can be overcome by employing a catalyst.Expand
PAPER PRESENTED AT INTERNATIONAL WORKSHOP ON INCREASING WHEAT YIELD POTENTIAL, CIMMYT, OBREGON, MEXICO, 20–24 MARCH 2006 Prospects for increasing photosynthesis by overcoming the limitations of Rubisco
The low activity and the competing reactions catalysed by Rubisco are major limitations to photosynthetic carbon assimilation in C3 plants; the present paper considers how these limitations can beExpand
Photobioreactor cultivation strategies for microalgae and cyanobacteria
Various photobioreactor designs are described and an overview on lighting systems, mixing, gas transfer, and the hydrodynamics of bubbles are provided to provide an overview of how these factors must be considered when the goal of a production process is economic feasibility. Expand
Comparative studies for evaluation of CO2 fixation in the cavity of the Rubisco enzyme using QM, QM/MM and linear-scaling DFT methods
The result obtained for the binding free energy of the CO2 underlines the importance of the accurate modelling of the surrounding protein milieu using a full DFT description. Expand
Curiosity and context revisited: crassulacean acid metabolism in the Anthropocene.
Limited understanding of the carbohydrate economy of CAM in relation to growth processes is emphasized and recent studies of the diel cycles of growth in these plants are reviewed and the proposition that these plants may have a role in atmospheric CO(2) sequestration is re-examined. Expand


Was photosynthetic RuBisCO recruited by acquisitive evolution from RuBisCO-like proteins involved in sulfur metabolism?
It is proposed that photosynthetic RuBisCOs evolved from RLPs similar to that found in B. subtilis, which in turn suggests functional and evolutionary links between B.subilis RLP and photosynthetics RuBISCO. Expand
Rubisco: structure, regulatory interactions, and possibilities for a better enzyme.
The interactions and associations relatively far from the Rubisco active site, including regulatory interactions with Rubisco activase, may present new approaches and strategies for understanding and ultimately improving this complex enzyme. Expand
The future of C4 research--maize, Flaveria or Cleome?
Cleome, the most closely related genus containing C4 species to the C3 modelArabidopsis, is proposed to be used together with Arabidopsis resources to accelerate progress in elucidating the genetic basis of C4 photosynthesis. Expand
Directed evolution of RuBisCO hypermorphs through genetic selection in engineered E.coli.
The RuBisCO variants that evolved during three rounds of random mutagenesis and selection were over-expressed, and exhibited 5-fold improvement in specific activity relative to the wild-type enzyme. Expand
Directed mutation of the Rubisco large subunit of tobacco influences photorespiration and growth.
The chloroplast-transformation strategy surmounts previous obstacles to mutagenesis of higher-plant Rubisco and allows the consequences for leaf photosynthesis to be assessed. Expand
Manipulation of Rubisco: the amount, activity, function and regulation.
Considerable progress has been made in identifying natural variation in the catalytic properties of Rubisco from different species and in developing the tools for introducing both novel and foreign Rubisco genes into plants. Expand
Despite slow catalysis and confused substrate specificity, all ribulose bisphosphate carboxylases may be nearly perfectly optimized.
It is asserted that all Rubiscos may be nearly perfectly adapted to the differing CO(2, O(2), and thermal conditions in their subcellular environments, optimizing this compromise between CO( 2)/O(2) specificity and the maximum rate of catalytic turnover. Expand
CO2 concentrating mechanisms in algae: mechanisms, environmental modulation, and evolution.
The diversity of CCMs, their evolutionary origins, and the role of the environment can exert regulatory effects on the expression of the CCM components are discussed. Expand
CO2-Responsive Expression and Gene Organization of Three Ribulose-1,5-Bisphosphate Carboxylase/Oxygenase Enzymes and Carboxysomes in Hydrogenovibrio marinus Strain MH-110
Hydrogenovibrio marinus strain MH-110 adapts well to various CO2 concentrations by using different types of RubisCO enzymes, as indicated by the results obtained here. Expand
PARF-1: an Arabidopsis thaliana FYVE-domain protein displaying a novel eukaryotic domain structure and phosphoinositide affinity.
The unusual domain structure of PARF-1 combined with its phosphoinositide specificity suggests that it may fulfil unexpected functions in higher plants. Expand