ribulose


Also found in: Encyclopedia, Wikipedia.

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 ?
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.
Reducoes na fotossintese potencial de plantas submetidas a deficiencia hidrica podem estar relacionadas a limitacao da sintese de ribulose bifosfato (RuBP), e nao a inibicao das enzimas no ciclo de Calvin.
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.
acs1 of Haemophilus influenzae type a capsulation locus region II encodes a bifunctional ribulose 5-phosphate reductase- CDP-ribitol pyrophosphorylase.
For example, excess heavy metals have been shown to negatively affect chlorophyll biosynthesis (Ouzounidou and others 1992), to alter the action of Ribulose 1,5-bisphosphate carboxylase-oxygenase (Cook and others 1997), to interfere with the dynamics of the thylakoid membrane (Szalontai and others 1999), and to inhibit electron transport system in both photosystem I and photosystem II (Ouzounidou and others 1992).
We developed a sensitive liquid chromatography-tandem mass spectrometry (LC-MS/ MS) method to simultaneously analyze the intracellular sugar phosphates dihydroxyacetone phosphate (DHAP), glyceraldehyde 3-phosphate, erythrose 4-phosphate, ribose 5-phosphate, ribulose 5-phosphate, xylulose 5-phosphate, fructose 6-phosphate, glucose 6-phosphate, and sedoheptulose 7-phosphate in blood spots.
The enzyme is ribulose 1,5-bisphosphate carboxylase-oxygenase, also known as fraction-1 protein.
Synergistic effects of ultraviolet--B enhanced radiation and growth temperature on ribulose 1,5bisphospahte carboxylase and 14 Co2 fixation in Vigna sinensis L".
Ribulose bisphosphate carboxylase and proteolytic activity in wheat leaves from anthesis through senescence.