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P3391

Millipore

Protein A-Sepharose from Staphylococcus aureus

lyophilized powder

Synonym(s):

Protein A–Agarose

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About This Item

MDL number:
UNSPSC Code:
41106500
NACRES:
NA.56
Pricing and availability is not currently available.

form

lyophilized powder

Quality Level

packaging

glass bottle of 1 g
glass bottle of 1.5 g
glass bottle of 250 mg
glass bottle of 5 g

storage condition

do not freeze

extent of labeling

3 mg per mL

technique(s)

affinity chromatography: suitable

color

white to gray

matrix

Sepharose CL-4B

matrix activation

cyanogen bromide

matrix attachment

amino

matrix spacer

1 atom

capacity

≥16 mg/mL binding capacity (human IgG)

solubility

water: 1 g/L at 20 °C

suitability

conforms to structure for swelling capacity (1g swells to 4 to 5 mL)

storage temp.

2-8°C

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General description

Protein A-Sepharose when linked with antibody, helps improving antigen binding capacity of IgG crosslinked to column matrices. In this case, binding happens between Protein A and Fc portion of the IgG molecule leaving antigen specific sites free.[1]

Application

Protein A-Sepharose was used:
  • for immunoprecipitated placentas for protein and RNA analyses using Western blot technique.[2]
  • in chromatin immunoprecipitation to understand the link between Mediator and remodelling of chromatin structure at specific promoters.[3]
  • as lysis buffer to remove endogenous G-type Igs in protein extraction of brain samples from female rats.[4]
  • in immunoprecipitation of [32P] phosphomyristin C of rabbit antiserum, to study the down-regulation of protein kinase C (PKC) and phosphomyristin C (PMC) during T-cell development.[5]
Protein A-Sepharose is used for affinity chromatography, antibody purification and characterization, immunoaffinity matrices, protein chromatography, protein A, G and L resins, and recombinant protein expression and analysis. Protein A-Sepharose has been used to develop strategies for investigating protein interactions, to improve the detection of celiac disease, and to study diabetes in children.

Quantity

Swelling: 1 g swells to approx. 4 ml.

Physical form

Supplied as lyophilized powder stabilized with lactose and dextran.

Legal Information

Sepharose is a trademark of Cytiva

related product

Product No.
Description
Pricing

Storage Class Code

11 - Combustible Solids

WGK

WGK 3

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Tracie A Hennen-Bierwagen et al.
Plant physiology, 149(3), 1541-1559 (2009-01-27)
Starch biosynthetic enzymes from maize (Zea mays) and wheat (Triticum aestivum) amyloplasts exist in cell extracts in high molecular weight complexes; however, the nature of those assemblies remains to be defined. This study tested the interdependence of the maize enzymes
Frédéric Sorgeloos et al.
Journal of virology, 85(7), 3690-3694 (2011-01-14)
The L protein encoded by Theiler's murine encephalomyelitis virus (TMEV) is a unique example of a picornaviral protein encoded by an alternative open reading frame. This protein is an important determinant of TMEV persistence in the mouse central nervous system.
M Iezzi et al.
Molecular endocrinology (Baltimore, Md.), 13(2), 202-212 (1999-02-11)
Insulin-secreting cells express four GTPases of the Rab3 family. After separation of extracts of INS-1 cells on a sucrose density gradient, the bulk of the A, B, and C isoforms was recovered in the fractions enriched in insulin-containing secretory granules.
P Hornbeck et al.
Molecular and cellular biology, 9(9), 3727-3735 (1989-09-01)
The regulation and expression of protein kinase C (PKC) and phosphomyristin C (PMC) (a principal substrate of PKC which is the major myristylated protein in lymphocyte and glioma lines that express it) in murine B and T lymphocytes were investigated.
V Ossipow et al.
Proceedings of the National Academy of Sciences of the United States of America, 90(17), 8219-8223 (1993-09-01)
The CCAAT/enhancer-binding protein (C/EBP) alpha is a leucine zipper protein that is preferentially expressed in certain cell types, such as adipocytes and hepatocytes. Here we show that C/EBP alpha mRNA is translated into two major proteins, C/EBP-42 and C/EBP-30, that

Questions

1–6 of 6 Questions  
  1. What is the Department of Transportation shipping information for this product?

    1 answer
    1. 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.

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  2. What is the binding capacity of Product P3391, Protein A-Sepharose®,  resin for my immunoglobulins?

    1 answer
    1. A table is available on the product information sheet (under Documents, above).

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  3. How can I store the hydrated P3391, Protein A-Sepharose® resin?

    1 answer
    1. Suspensions stored in the refrigerator in the presence of a suitable bacteriostatic agent, such as 20% ETOH, retain IgG binding activity. Another storage option is to put the resin into phosphate buffer saline, pH 7 with about 0.01% preservative (thimerosal or sodium azide).

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  4. What can P3391, Protein A-Sepharose® resin tolerate?

    1 answer
    1. Protein A Sepharose CL-4B exhibits high chemical and mechanical stability, and is stable over the pH range 2-11. It withstands high concentrations of denaturants, such as urea and guanidine hydrochloride. The gel displays high thermal stability but is not autoclavable. Furthermore, the gel can, if handled with care, be used many times.

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  5. How do I clean Product P3391, Protein A-Sepharose®, resin?

    1 answer
    1. It may be possible to clean the resin by washing it with 10-20 volumes of 100 mM Tris or borate buffer, pH8.5, containing 0.5-2.0 M NaCl, followed by 10-20 volumes of 100 mM acetate buffer, pH 4.0, containing0.5-2.0 M NaCl. Re equilibrate the resin with 20 volumes of buffer A.

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  6. How do I swell P3391, Protein A-Sepharose® resin?

    1 answer
    1. The lyophilized product should be swollen in buffer A for 30 minutes or longer at room temperature. Do not stir with any kind of mechanical stirrer.  One gram of powder typically swells to 3-4 mL of the hydrated gel.  This, along with other useful information (such as the formulation of buffer A) can be found on the product information sheet (under Documents, above).

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