ribulose


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ri·bu·lose

(rī'byū-lōs),
The 2-keto isomer of ribose. As the 5-phosphate, it participates in the pentose monophosphate shunt; as the 1,5-bisphosphate, it combines with CO2 at the start of the photosynthetic process in green plants ("carbon dioxide trap"); d-ribulose is the epimer of d-xylulose.

ribulose

a pentose sugar, found in syrup, which is important in carbohydrate metabolism. Formula: C5H10O5
References in periodicals archive ?
1997), the high concentrations of sodium or chloride accumulated in the leaf tissues accelerate the process of leaf senescence and increase the synthesis of endoproteinases, which are responsible for the degradation of Ribulose 1,5-bisphosphate carboxylase/oxygenase (RuBisCO), besides stimulating the synthesis of proteins responsible for the degradation and loss of chlorophyll, such as chlorophyllase.
Their low net photosynthesis could be the result of a decreased electron transport rate in chloroplasts and a lower content of soluble protein (mainly Ribulose 1,5 biphosphate, Kung & Marsho, 1976) per unit leaf area, which are documented from growth under low light intensities (Boardman, 1977).
2] nos sitios de troca da enzima Ribulose 1,5-bisfosfato carboxilase oxigenase (Rubisco), responsavel pela carboxilacao primaria no Ciclo de Calvin-Benson, aumentando a producao de fotoassimilados.
Sulfite affects the carbon fixation, ribulose biphosphate carboxylase, glycolate oxidase activity, and photophosphorylation [25].
In maize, two distinct ribulose 1,5-bisphosphate carboxylase/ oxygenaseactivase transcripts have different day/night patterns of expression.
Goloubinoff P, Christeller JT, Gatenby AA, Lorimer GH Reconstitution of active dimeric ribulose bisphosphate carboxylase from an unfoleded state depends on two chaperonin proteins and Mg-ATP.
The oxidative branch of the PPP converts glucose into ribulose and generates the reducing force NADPH, which is critical in defense against oxidative stress, lipid synthesis, and many other anabolic reactions.
Rubisco large subunit: The large subunit (53kDa) of Ribulose 1,5-bis phosphate carboxylase/oxygenase that functions in the dark reaction of photosynthesis is the most abundant protein.
Results: Proteins of plant origin in Ankaferd[R] were NADP-dependent-malic enzyme, ribulose bisphosphate-carboxylase-large chain, maturase K, ATP synthase subunit-beta, ATP synthase subunit-alpha, chalcone-flavanone isomerase-1, chalcone-flavanone isomerase-2, and actin-depolymerizing factor.