R8000
D-Ribulose 1,5-Diphosphate Carboxylase from spinach
partially purified powder, 0.01-0.1 unit/mg solid
Synonym(e):
3-Phospho-D-glycerate carboxy-lyase(dimerizing), Rubisco
Anmeldenzur Ansicht organisationsspezifischer und vertraglich vereinbarter Preise
Alle Fotos(1)
About This Item
CAS-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352204
NACRES:
NA.54
Empfohlene Produkte
Biologische Quelle
spinach
Form
partially purified powder
Spezifische Aktivität
0.01-0.1 unit/mg solid
Mol-Gew.
557 kDa
Lagertemp.
−20°C
Verwandte Kategorien
Allgemeine Beschreibung
D-Ribulose 1,5-Diphosphate Carboxylase (RUBISCO) amounts to 50% of the total spinach leaves associated soluble protein.
Exists as a 557 kDa hexadecamer composed of eight heavy chains each with a molecular weight of approximately 56 kDa and eight light chains of molecular weight 14 kDa. Each molecule contains one magnesium ion.
pH optimum: ~7.9.
KM for CO2: ~0.45 mM.
Ribulose diphosphate becomes inhibitory at concentrations exceeding 0.7 mM. Orthophosphate and ammonium sulfate are competitive inhibitors. 3-Phosphoglycerate is a noncompetitive inhibitor.
pH optimum: ~7.9.
KM for CO2: ~0.45 mM.
Ribulose diphosphate becomes inhibitory at concentrations exceeding 0.7 mM. Orthophosphate and ammonium sulfate are competitive inhibitors. 3-Phosphoglycerate is a noncompetitive inhibitor.
Anwendung
D-Ribulose 1,5-Diphosphate Carboxylase from spinach has been used:
- as a test protein in pepsin digestion studies
- as an innocuous or non-hazardous protein sample to test its effect on human intestinal epithelial cell lines
- in isothermal titration calorimetry (ITC), and radiolabeled binding assays with abscisic acid
Biochem./physiol. Wirkung
D-Ribulose 1,5-Diphosphate Carboxylase (RUBISCO) depends on Rubisco activase and chaperones for activation. It participates in plant photorespiration events by catalyzing the carboxylation and oxygenation of ribulose-1,5-bisphosphate. Abscisic acid inhibits the carboxylation activity of Rubisco.
Einheitendefinition
One unit will convert 1.0 μmole of D-RuDP and CO2 to 2.0 μmoles of D-3-phosphoglycerate per min at pH 7.8 at 25°C.
Signalwort
Danger
H-Sätze
P-Sätze
Gefahreneinstufungen
Resp. Sens. 1
Lagerklassenschlüssel
11 - Combustible Solids
WGK
WGK 1
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Persönliche Schutzausrüstung
Eyeshields, Gloves, type N95 (US)
Analysenzertifikate (COA)
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Benjamin D Rae et al.
Microbiology and molecular biology reviews : MMBR, 77(3), 357-379 (2013-09-06)
Cyanobacteria are the globally dominant photoautotrophic lineage. Their success is dependent on a set of adaptations collectively termed the CO2-concentrating mechanism (CCM). The purpose of the CCM is to support effective CO2 fixation by enhancing the chemical conditions in the
Martin A J Parry et al.
Journal of experimental botany, 64(3), 717-730 (2012-11-20)
Rubisco (ribulose-1,5-bisphosphate (RuBP) carboxylase/oxygenase) enables net carbon fixation through the carboxylation of RuBP. However, some characteristics of Rubisco make it surprisingly inefficient and compromise photosynthetic productivity. For example, Rubisco catalyses a wasteful reaction with oxygen that leads to the release
Guillaume Tcherkez
Plant, cell & environment, 36(9), 1586-1596 (2013-01-12)
Although ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) was discovered nearly 60 years ago, the associated chemical mechanism of the reaction is still incompletely understood. The catalytic cycle consists of four major steps: ribulose-1,5-bisphosphate binding, enolization, CO₂ or O₂ addition and hydration, and cleavage
Dennis McNevin et al.
Journal of experimental botany, 57(14), 3883-3900 (2006-10-19)
The forward and reverse rate constants involved in carbamylation, activation, carboxylation, and inhibition of D-ribulose-1,5-bisphosphate carboxylase/oxygenase (RuBisCO) have been estimated by a new technique of simultaneous non-linear regression of a differential equation kinetic model to multiple experimental data. Parameters predicted
K Thomas et al.
Regulatory toxicology and pharmacology : RTP, 39(2), 87-98 (2004-03-26)
Rationale. Evaluation of the potential allergenicity of proteins derived from genetically modified foods has involved a weight of evidence approach that incorporates an evaluation of protein digestibility in pepsin. Currently, there is no standardized protocol to assess the digestibility of
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