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H5000
Hexokinase from Saccharomyces cerevisiae
Type III, lyophilized powder, ≥25 units/mg protein (biuret)
Synonim(y):
ATP:D-Hexose-6-phosphotransferase, Hexokinase from yeast
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About This Item
Polecane produkty
typ
Type III
Formularz
lyophilized powder
aktywność właściwa
≥25 units/mg protein (biuret)
masa cząsteczkowa
dimer 110 kDa
obecność zanieczyszczeń
glucose-6-phosphate dehydrogenase and phosphoglucose isomerase ≤10%
temp. przechowywania
−20°C
informacje o genach
bakers yeast ... HXK1(850614) , HXK2(852639)
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Działania biochem./fizjol.
Catalyzes the phosphorylation of D-hexose sugars at the C6 position utilizing ATP as a phosphate source.
The rate of phosphorylation varies with different hexoses (pH 7.5, 30 °C).
D-fructose KM: 0.33 mM
D-glucose KM: 0.12 mM
D-mannose KM: 0.05 mM
Yeast hexokinase exists as two similar isoforms, PI and PII (A and B), with isoelectric points of 5.25 and 4, respectively.
Molecular Weight: ~ 54 kDa (monomer)
~110 kDa (dimer)
Optimal pH: 7.5 to 9.0
Extinction Coefficient: E1% = 8.85 (PI) and 9.47 (PII) at 280 nm
Activators: Hexokinase requires Mg2+ ions (KM = 2.6 mM) for activity. Hexokinase is activated by catecholamines and related compounds.
Inhibitors: sorbose-1-phosphate, polyphosphates, 6-deoxy-6-fluoroglucose, 2-C-hydroxy-methylglucose, xylose, lyxose, and thiol reactive compounds (Hg2+ and 4-chloromercuribenzoate)
The rate of phosphorylation varies with different hexoses (pH 7.5, 30 °C).
D-fructose KM: 0.33 mM
D-glucose KM: 0.12 mM
D-mannose KM: 0.05 mM
Yeast hexokinase exists as two similar isoforms, PI and PII (A and B), with isoelectric points of 5.25 and 4, respectively.
Molecular Weight: ~ 54 kDa (monomer)
~110 kDa (dimer)
Optimal pH: 7.5 to 9.0
Extinction Coefficient: E1% = 8.85 (PI) and 9.47 (PII) at 280 nm
Activators: Hexokinase requires Mg2+ ions (KM = 2.6 mM) for activity. Hexokinase is activated by catecholamines and related compounds.
Inhibitors: sorbose-1-phosphate, polyphosphates, 6-deoxy-6-fluoroglucose, 2-C-hydroxy-methylglucose, xylose, lyxose, and thiol reactive compounds (Hg2+ and 4-chloromercuribenzoate)
Definicja jednostki
One unit will phosphorylate 1.0 μmole of D-glucose per min at pH 7.6 at 25 °C, unless otherwise indicated below.
Postać fizyczna
Lyophilized powder containing approx. 15% sodium citrate
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Kod klasy składowania
11 - Combustible Solids
Klasa zagrożenia wodnego (WGK)
WGK 3
Temperatura zapłonu (°F)
Not applicable
Temperatura zapłonu (°C)
Not applicable
Środki ochrony indywidualnej
Eyeshields, Gloves, type N95 (US)
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