Results 71 to 80 of about 28,368 (283)

The regulation of the air: a hypothesis [PDF]

open access: yesSolid Earth, 2012
We propose the hypothesis that natural selection, acting on the specificity or preference for CO<sub>2</sub> over O<sub>2</sub> of the enzyme rubisco (ribulose-1,5-bisphosphate carboxylase/oxygenase), has controlled the CO<sub ...
E. G. Nisbet   +2 more
doaj   +1 more source

Physiological Responses of Common Bean Genotypes to Drought Stress

open access: yesAgronomy, 2023
Drought compromises edible vegetable production worldwide, including common bean (Phaseolus vulgaris L.) an economically important crop that is highly dependent on optimum rainfall or abundant irrigation.
Petko Mladenov   +6 more
doaj   +1 more source

Ribulose bisphosphate carboxylase from methanol-grown Paracoccus denitrificans [PDF]

open access: yesJournal of Bacteriology, 1978
Paracoccus denitrificans grows on methanol as the sole source of energy and carbon, which it assimilates aerobically via the reductive pentose phosphate cycle. This gram-negative bacterium grew rapidly on 50 mM methanol (generation time, 7 h, 30 degrees C) in excellent yield (3 g of wet-packed cells per liter of culture).
Bruce A. McFadden   +2 more
openaire   +3 more sources

Biochemical characterization of phosphoenolpyruvate carboxykinases from multiple species of brown algae

open access: yesJournal of Phycology, EarlyView.
Abstract Phosphoenolpyruvate carboxykinase (PEPCK) is involved in the conversion of phosphoenolpyruvate (PEP) to oxaloacetate (OAA). In addition to playing a role in gluconeogenesis in various organisms, PEPCK also functions in the C4 cycle to concentrate CO2 for photosynthesis in some C4 plants.
Jian‐qiang Jin   +3 more
wiley   +1 more source

Purification of Rubisco from Chlamydomonas reinhardtii

open access: yesBio-Protocol, 2015
Chlamydomonas reinhardtii is a model organism for chloroplast studies. Besides other convenient features, the feasibility of chloroplast genome transformation distinguishes this unicellular alga as ideal for the manipulation of chloroplastic gene ...
Hemanth Sudhani   +5 more
doaj   +1 more source

Enhancing photosynthetic CO2 fixation by assembling metal-organic frameworks on Chlorella pyrenoidosa

open access: yesNature Communications, 2023
The CO2 concentration at ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) is crucial to improve photosynthetic efficiency for biomass yield. However, how to concentrate and transport atmospheric CO2 towards the Rubisco carboxylation is a big ...
Dingyi Li   +4 more
doaj   +1 more source

The protein import apparatus of chloroplasts [PDF]

open access: yes, 1993
Routing of cytosolically synthesized precursor proteins into chloroplasts is a specific process which involves a multitude of soluble and membrane components.
Bartling D.   +17 more
core   +1 more source

Protocol to analyze the inhibitory effect of free organic carbon generated by chemoautotrophic bacteria on their CO2 fixation

open access: yesSTAR Protocols, 2023
Summary: Here, we present a protocol to analyze the inhibition of self-generated extracellular free organic carbon (EFOC) on CO2 fixation by chemoautotrophic bacteria. We detail the construction and operation of membrane reactor, followed by a simulation
Saiwei Zhang   +3 more
doaj  

Interactions of hydrogen peroxide with ribulose bisphosphate carboxylase oxygenase.

open access: yesJournal of Biological Chemistry, 1980
Hydrogen peroxide inhibited both carboxylase and oxygenase activities of purified, and fully activated, spinach ribulose-1,5-bisphosphate (RuP2) carboxylase-oxygenase. Inhibition of the carboxylase reaction was mixed competitive with respect to CO2 (Ki = 1.2 mM) and uncompetitive with respect to RuP2.
George H. Lorimer   +3 more
openaire   +3 more sources

Transcriptional gene fusions via targeted integration at safe harbors for high transgene expression in Chlamydomonas reinhardtii

open access: yesNew Phytologist, EarlyView.
Summary Conventional genetic engineering in green microalgae employs error‐prone nonhomologous end joining to integrate recombinant DNA at double‐strand breaks generated at random positions across the nuclear genome. This typically results in variable transcription strength and requires a labor‐intensive screening procedure to identify transformants ...
Nick Jacobebbinghaus   +5 more
wiley   +1 more source

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