Results 21 to 30 of about 40,127 (172)

Light Activation of Ribulose Bisphosphate Carboxylase

Plant Physiology, 1978
The development of methods of preparation of long wavelength ultraviolet light capable of activating ribulose bisphosphate carboxylase is reported. This preparation was obtained from tobacco (Nicotiana tabacum) leaves which had reached about one-half maximum leaf weight.
Larry S. Daley, Frank Dailey, Richard S. Criddle   +2 more
openaire   +3 more sources

Photorespiration-Induced Reduction of Ribulose Bisphosphate Carboxylase Activation Level [PDF]

Plant Physiology, 1985
Leaf photosynthesis and ribulose bisphosphate carboxylase activation level were inhibited in several mutants of the C(3) crucifer Arabidopsis thaliana which possess lesions in the photorespiratory pathway. This inhibition occurred when leaves were illuminated under a photorespiratory atmosphere (50% O(2), 350 microliters per liter CO(2), balance N(2)),
C J, Chastain, W L, Ogren
openaire   +2 more sources

Metabarcoding of Pollen Carried by Syrphids Reveals Novel Plant–Pollinator Interactions in a Protected Natural Area and Agricultural Sites

Entomologia Experimentalis et Applicata, EarlyView.
Using DNA metabarcoding, this study investigates pollen transported by syrphids (Syrphidae) in the Dolomiti Bellunesi National Park and agricultural sites in Northern Italy. The analysis reveals a high diversity of visited plant taxa, including previously undocumented plant–pollinator interactions.
Serena Magagnoli, Daniele Sommaggio, Claudio Ratti, Riccardo Baroncelli, Andrea Menicucci, Enrico Vettorazzo, Giovanni Burgio   +6 more
wiley   +1 more source

Effect of Carbonic Anhydrase on the Activity of Ribulose Bisphosphate Carboxylase

Journal of Experimental Botany, 1980
At concentrations of C02 less than saturating, carbonic anhydrase (EC 4.2.1.1) stimulates the carboxylation of ribulose bisphosphate catalysed by ribulose bisphosphate carboxylase (EC 4.1.1.3.9) in vitro. This is not through any beneficial association of the two enzymes but is a consequence of the increased rate of conversion of HCOj ion to C02, the ...
Bird, I. F., Cornelius, M. J., Keys, A. J.   +2 more
openaire   +1 more source

Structural insights into θ‐type carbonic anhydrases 3 and 4: Tuning the directionality of CO2 hydration in a diatom

The FEBS Journal, EarlyView.
θ‐CA3 from a marine diatom has an N‐terminal transmembrane helix and two homologous catalytic domains. The enzyme functions as a dimer, with active sites formed near the dimer interface. A bicarbonate ion binds on the symmetry axis of the dimer and forms hydrogen bonds with both monomers, thereby activating θ‐CA3 and tuning CO2 hydration activity ...
Hiroto Negoro, Atsuki Ohsawa, Ginga Shimakawa, Hideaki Tanaka, Yusuke Matsuda, Genji Kurisu   +5 more
wiley   +1 more source

Comprehensive revision of Mallomonas sect. Peroneides stat. nov. (Chrysophyceae) integrating morphology and multigene phylogeny

Journal of Phycology, EarlyView.
Abstract Mallomonas is among the most diverse genera of Chrysophyceae, yet many of its lineages remain taxonomically unresolved due to limited molecular sampling. Mallomonas series Peronoides, historically limited to four species, has posed persistent taxonomic difficulties, most notably the long‐standing and problematic reliance on a rare ...
Petr Knotek, Iva Jadrná, Martin Pusztai, Pavel Škaloud   +3 more
wiley   +1 more source

Purification and Degradation of Ribulose Bisphosphate Carboxylase from Soybean Leaves [PDF]

Plant Physiology, 1986
A rapid method is described for the preparation of up to 500 milligrams of pure ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBP carboxylase) from 250 grams of field-grown soybean leaves. Leaves were extracted in 20 millimolar phosphate (pH 6.9) at 4 degrees C, containing 4% (w/v) polyvinylpolypyrrolidone, 10 micromolar leupeptin, 1 millimolar ...
C, Paech, C D, Dybing
openaire   +2 more sources

Genome‐scale insights into metabolic streamlining and photosynthetic energy balance in the extremophile green alga Picocystis salinarum (Picocystophyceae, Chlorophyta)

Journal of Phycology, EarlyView.
Abstract Picocystis salinarum is an early‐diverging chlorophyte and the sole described member of the Picocystophyceae, frequently dominating hypersaline and alkaline lakes despite extreme physicochemical constraints. To elucidate the genomic foundations of its ecological success, we generated a fully annotated, chromosome‐scale nuclear genome assembly ...
Claude Lemieux, Christian Otis, Monique Turmel   +2 more
wiley   +1 more source

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

Journal 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).
J M, Shively, A, Saluja, B A, McFadden
openaire   +2 more sources

Fletcheria gen. nov. (Ralfsiales, Phaeophyceae): A new crustose brown algal genus clarifying evolutionary relationships of Ralfsia pacifica

Journal of Phycology, EarlyView.
Abstract The genus Ralfsia was historically broadly circumscribed but has recently undergone significant taxonomic revision. Based on molecular data, a restricted Ralfsia sensu stricto was delineated that had many species reassigned to new genera and families.
Viviana Patricia Reyes‐Gómez, Manuela I. Parente, Daniel León‐Alvarez, Erasmo C. Macaya, Gary W. Saunders   +4 more
wiley   +1 more source