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alpha-2,6-Sialyltransferase (Pd26ST)

Cat No.:V62077 Purity: Enzyme activity≥ 5 U/mg
alpha-2,6-Sialyltransferase (Pd26ST) sialylates terminal and internal galactose and N-acetylgalactosamine, producing terminal α2,6-sialoside.
alpha-2,6-Sialyltransferase (Pd26ST)
alpha-2,6-Sialyltransferase (Pd26ST) Chemical Structure CAS No.: 9075-81-4
Product category: Glycobiology Enzymes
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
25U
50U
100U
500U
Other Sizes
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Purity & Quality Control Documentation

Purity: Enzyme activity= 6.5 U/mg

Product Description
alpha-2,6-Sialyltransferase (Pd26ST) sialylates terminal and internal galactose and N-acetylgalactosamine, producing terminal α2,6-sialoside.
alpha-2,6-Sialyltransferase (Pd26ST) (CAS 9075-81-4) is an enzyme that catalyzes the transfer of sialic acid from CMP-sialic acid to galactose residues of glycoproteins and glycolipids, forming α-2,6-sialyl linkages. It is a glycosyltransferase enzyme involved in the biosynthesis of sialylated glycoconjugates. Sialyltransferases play critical roles in cellular recognition, signaling, and immune modulation. Pd26ST is used as a research tool for studying glycobiology, sialylation pathways, and the role of sialic acid in cell surface interactions. The enzyme is intended for research use only.
Biological Activity I Assay Protocols (From Reference)
Targets
Sialic acid substrates and glycoprotein/glycolipid acceptors. alpha-2,6-Sialyltransferase (Pd26ST) catalyzes the transfer of sialic acid from CMP-sialic acid to galactose residues of glycoproteins and glycolipids, forming α-2,6-sialyl linkages. Sialyltransferases are glycosyltransferases that play critical roles in the biosynthesis of sialylated glycoconjugates. Sialic acids on cell surfaces are involved in cellular recognition, signaling, and immune modulation. The enzyme's activity is dependent on its substrates CMP-sialic acid and appropriate acceptor molecules.
ln Vitro
alpha-2,6-Sialyltransferase catalyzes the transfer of sialic acid from CMP-sialic acid to galactose residues, forming α-2,6-sialyl linkages. The enzyme's activity can be measured using various acceptor substrates including glycoproteins, glycolipids, or synthetic substrates. Its specific activity depends on the substrate used and the assay conditions. The enzyme is used as a research tool for studying sialylation pathways and glycobiology.
ln Vivo
In vivo studies of alpha-2,6-sialyltransferase are primarily related to its role in glycobiology and immune function. The enzyme is involved in the biosynthesis of sialylated glycoconjugates, which play critical roles in cellular recognition, signaling, and immune modulation. Studies may focus on the regulation of sialyltransferase expression and activity in various tissues and disease states.
Enzyme Assay
Non-cell-based assays for alpha-2,6-sialyltransferase involve measuring enzyme activity using purified enzyme and substrates. The enzyme is incubated with CMP-sialic acid and an acceptor substrate (e.g., asialofetuin, or synthetic substrates). The transfer of sialic acid is measured using radiolabeled CMP-sialic acid or by detecting the formation of sialylated products by HPLC or mass spectrometry. Enzyme kinetics (Km, Vmax) can be determined by varying substrate concentrations.
Cell Assay
Cell-based assays for alpha-2,6-sialyltransferase use various cell lines to study sialylation. Cells are cultured, and the expression and activity of the enzyme are assessed by measuring cell surface sialylation using lectin binding (e.g., Sambucus nigra agglutinin, SNA) or by detecting sialylated glycoproteins by Western blot. The effects of inhibitors or modulators on sialyltransferase activity can be studied. Gene expression is analyzed by qPCR.
Animal Protocol
In vivo studies of alpha-2,6-sialyltransferase are conducted in animal models to study the role of sialylation in physiology and disease. Knockout or transgenic mouse models may be used to study the effects of altered sialyltransferase expression on development, immune function, and disease susceptibility. Tissue samples are analyzed for sialylation patterns using lectin histochemistry or mass spectrometry.
ADME/Pharmacokinetics
alpha-2,6-Sialyltransferase (Pd26ST) has a CAS number of 9075-81-4. It is a glycosyltransferase enzyme that catalyzes the formation of α-2,6-sialyl linkages. The enzyme is typically supplied as a lyophilized powder or in solution and should be stored under recommended conditions as specified by the manufacturer. It is intended for research use only.
Toxicity/Toxicokinetics
Specific toxicity data for alpha-2,6-sialyltransferase are not applicable as the compound is an enzyme used as a research tool. Standard laboratory safety practices should be followed when handling the enzyme, including the use of personal protective equipment. It is intended for research use only.
References

[1]. Highly efficient chemoenzymatic synthesis of naturally occurring and non-natural alpha-2,6-linked sialosides: a P. damsela alpha-2,6-sialyltransferase with extremely flexible donor-substrate specificity. Angew Chem Int Ed Engl. 2006 Jun 12;45(24):3938-44.

Additional Infomation
alpha-2,6-Sialyltransferase (Pd26ST) is an enzyme that catalyzes the transfer of sialic acid from CMP-sialic acid to galactose residues of glycoproteins and glycolipids, forming α-2,6-sialyl linkages. Sialyltransferases play critical roles in the biosynthesis of sialylated glycoconjugates, which are involved in cellular recognition, signaling, and immune modulation. The enzyme is used as a research tool for studying glycobiology, sialylation pathways, and the role of sialic acid in cell surface interactions. It is for research use only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
CAS #
9075-81-4
Appearance
Colorless to light yellow liquid
Source
Recombinant microorganism
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
20mM Tris-HC1 (pH8.0), 200mM NaC1, 10% glycerin.
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Calculator

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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