Results 11 to 20 of about 15,119 (187)

Rubisco, Rubisco activase, and global climate change [PDF]

Journal of Experimental Botany, 2008
Global warming and the rise in atmospheric CO(2) will increase the operating temperature of leaves in coming decades, often well above the thermal optimum for photosynthesis. Presently, there is controversy over the limiting processes controlling photosynthesis at elevated temperature.
Rowan F, Sage, Danielle A, Way, David S, Kubien   +2 more
core   +4 more sources

Insights into the mechanism and regulation of the CbbQO-type Rubisco activase, a MoxR AAA+ ATPase. [PDF]

Proc Natl Acad Sci U S A, 2020
Significance Life depends on the ability of organisms such as plants to convert the gas carbon dioxide into sugar molecules to produce energy and build biomass. Most of this activity is catalyzed by the CO2-fixing enzyme Rubisco.
Tsai YC, Ye F, Liew L, Liu D, Bhushan S, Gao YG, Mueller-Cajar O.   +6 more
europepmc   +2 more sources

Effects of Overproduction of Rubisco Activase on Rubisco Content in Transgenic Rice Grown at Different N Levels. [PDF]

Int J Mol Sci, 2020
It has been reported that overproduction of Rubisco activase (RCA) in rice (Oryza sativa L.) decreased Rubisco content, resulting in declining photosynthesis.
Suganami M, Suzuki Y, Kondo E, Nishida S, Konno S, Makino A.   +5 more
europepmc   +2 more sources

Non-enzymatic acetylation of lysine residues affects the stability of Rubisco activase. [PDF]

aBIOTECH
Post-translational modifications of non-histone proteins are critical for plant adaptation to fluctuating environmental conditions. Rubisco activase (RCA), a chloroplastic ATPase, plays a crucial role in CO2 fixation by activating ribulose-1,5 ...
Yang L, Li Y, Hong H, Luo C, Gao X, Shu Z, Mi HL, Chen GY, Qu M.   +8 more
europepmc   +2 more sources

Activation of interspecies-hybrid Rubisco enzymes to assess different models for the Rubisco–Rubisco activase interaction

Photosynthesis Research, 2013
Ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is prone to inactivation from non-productive binding of sugar-phosphates. Reactivation of Rubisco requires conformational remodeling by a specific chaperone, Rubisco activase. Rubisco activase from tobacco and other plants in the family Solanaceae is an inefficient activator of Rubisco from non ...
Wachter, Rebekka M., Salvucci, Michael E., Carmo-Silva, A. Elizabete, Barta, Csengele, Genkov, Todor, Spreitzer, Robert J.   +5 more
openaire   +4 more sources

Rubisco activation by wheat Rubisco activase isoform 2β is insensitive to inhibition by ADP [PDF]

Biochemical Journal, 2019
Abstract Rubisco activase (Rca) is a catalytic chaperone that remodels the active site, promotes the release of inhibitors and restores catalytic competence to Rubisco. Rca activity and its consequent effect on Rubisco activation and photosynthesis are modulated by changes to the chloroplast environment induced by fluctuations in light ...
Juan Alejandro Perdomo, Gustaf E. Degen, Dawn Worrall, Elizabete Carmo-Silva   +3 more
openaire   +4 more sources

Partitioning of Rubisco activase into the pyrenoidal Rubisco condensate is mediated by a functional protein-protein interaction. [PDF]

Nat Commun
Most unicellular microalgae achieve robust photosynthetic CO2-fixation by sequestering their carboxylase in chloroplastic Rubisco condensates (Rubiscondensates) termed pyrenoids.
How JB, Poh CW, Ng YS, Wunder T, Mueller-Cajar O.   +4 more
europepmc   +2 more sources

Small Oligomers of Ribulose-bisphosphate Carboxylase/Oxygenase (Rubisco) Activase Are Required for Biological Activity [PDF]

Journal of Biological Chemistry, 2013
Ribulose-bisphosphate carboxylase/oxygenase (Rubisco) activase uses the energy from ATP hydrolysis to remove tight binding inhibitors from Rubisco, thus playing a key role in regulating photosynthesis in plants.
Jeremy R Keown, Michael D W Griffin, Haydyn D T Mertens   +2 more
exaly   +3 more sources

In vivo evidence for a regulatory role of phosphorylation of Arabidopsis Rubisco activase at the Thr78 site. [PDF]

Proc Natl Acad Sci U S A, 2019
Significance Rubisco activase (Rca) regulates the activation state of Rubisco, the carboxylating enzyme of photosynthesis. Regulation of Rca by redox status of cysteine residues in species such as Arabidopsis is well recognized, but the role of recently ...
Kim SY, Harvey CM, Giese J, Lassowskat I, Singh V, Cavanagh AP, Spalding MH, Finkemeier I, Ort DR, Huber SC.   +9 more
europepmc   +2 more sources

Dual Functions of a Rubisco Activase in Metabolic Repair and Recruitment to Carboxysomes

Cell, 2020
Rubisco, the key enzyme of CO2 fixation in photosynthesis, is prone to inactivation by inhibitory sugar phosphates. Inhibited Rubisco undergoes conformational repair by the hexameric AAA+ chaperone Rubisco activase (Rca) in a process that is not well ...
Huping Wang, F Ulrich Hartl, Andreas Bracher   +2 more
exaly   +2 more sources