P3391
Protein A-Sepharose™ from Staphylococcus aureus
lyophilized powder
Synonym(s):
Protein A–Agarose
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About This Item
Form:
lyophilized powder
form
lyophilized powder
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
Quality Level
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.
Application
Protein A-Sepharose was used:
- for immunoprecipitated placentas for protein and RNA analyses using Western blot technique.
- in chromatin immunoprecipitation to understand the link between Mediator and remodelling of chromatin structure at specific promoters.
- as lysis buffer to remove endogenous G-type Igs in protein extraction of brain samples from female rats.
- 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.
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.
Physical form
Supplied as lyophilized powder stabilized with lactose and dextran.
Preparation Note
Swelling: 1 g swells to approx. 4 ml.
Legal Information
Sepharose is a trademark of Cytiva
Storage Class
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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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.
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
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.
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.
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
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