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H8629

Sigma-Aldrich

Hexokinase and Glucose-6-phosphate Dehydrogenase from baker′s yeast (S. cerevisiae)

lyophilized powder

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Synonym(s):
HK/G6PD
MDL number:
MFCD00131322
UNSPSC Code:
12352204
eCl@ss:
32160410
NACRES:
NA.54

form

lyophilized powder

Quality Level

200

glucose-6-phosphate dehydrogenase activity

≥75 units/mg protein (biuret)

hexokinase activity

≥65 units/mg protein

purified by

crystallization

storage temp.

−20°C

Related Categories

General description

Research area: Cell signaling

Hexokinase and Glucose-6-phosphate Dehydrogenase are intracellular enzymes found distributed widely in the living cells.
Enzyme Commission numbers 2.7.1.1 + 1.1.1.49

Application

Hexokinase and Glucose-6-phosphate Dehydrogenase from baker′s yeast (S. cerevisiae) has been used to evaluate the adenylate kinase (Adk), activities of the mutant Adk’s. It has also been used for the determination of glucose and ATP.

Biochem/physiol Actions

Hexokinase initiates the glycolysis pathway by catalyzing the phosphorylation of glucose to Glucose-6-phosphate in the presence of ATP. Glucose-6-phosphate dehydrogenase plays a role in the subsequent oxidation of Glucose-6-phosphate in the presence of triphosphopyridine nucleotide (TPN). Hexokinase and Glucose-6-phosphate Dehydrogenase both serve as a tool in biochemical and analytical studies for determining glucose, fructose, mannose, ATP, and creatin-kinase activity.

Packaging

Package sizes are based on hexokinase units.

Components

Mixture of hexokinase and glucose-6-phosphate dehydrogenase

Unit Definition

Hexokinase Unit Definition: One unit will phosphorylate 1.0 μmole of D-glucose per min at pH 7.6 at 25 °C.

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Information

常规特殊物品

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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  1. Which document(s) contains shelf-life or expiration date information for a given product?

    If available for a given product, the recommended re-test date or the expiration date can be found on the Certificate of Analysis.

  2. How do I get lot-specific information or a Certificate of Analysis?

    The lot specific COA document can be found by entering the lot number above under the "Documents" section.

  3. Can Product H8629, Hexokinase and Glucose-6-phosphate Dehydrogenase from baker's yeast, be used for the determination of glucose?

    A method for the determination of glucose using hexokinase and glucose 6-phosphate dehydrogenase is described in "Methods of Enzymatic Analysis" 3rd ed., Vol. VI, p. 163.

  4. What units are the package sizes of Product H8629, Hexokinase and Glucose-6-phosphate Dehydrogenase from baker's yeast, based upon?

    This product is packaged on the basis of hexokinase units.

  5. What is the stability of a stock solution of Product H8629, Hexokinase and Glucose-6-phosphate Dehydrogenase from baker's yeast?

    Stock solutions prepared in water or 10 mM potassium phosphate buffer pH 8.0 lose approximately 1% activity per month when stored at 4°C.

  6. Does Sigma offer any other product which can be used in place of Product H8629, Hexokinase and Glucose-6-phosphate Dehydrogenase from baker's yeast?

    Yes. We offer Product No. G3293 (Glucose Assay Reagent), which is a component of the GAHK20 (Glucose Assay Kit).

  7. How should Product H8629, Hexokinase and Glucose-6-phosphate Dehydrogenase from baker's yeast, be reconstituted?

    Prior to determining the activity of this enzyme, Sigma reconstitutes it in 250 mM glycylglycine buffer, pH 7.4.

  8. How do I find price and availability?

    There are several ways to find pricing and availability for our products. Once you log onto our website, you will find the price and availability displayed on the product detail page. You can contact any of our Customer Sales and Service offices to receive a quote.  USA customers:  1-800-325-3010 or view local office numbers.

  9. What is the Department of Transportation shipping information for this product?

    Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product. 

  10. My question is not addressed here, how can I contact Technical Service for assistance?

    Ask a Scientist here.

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Methods of Enzymatic Analysis, 8(12), 117-130 (1965)
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Effect of pH on the stability of hexokinase and glucose 6-phosphate dehydrogenase
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