Sigma-Aldrich Protein A-Agarose 2 mL

Assay

>98% (HPLC and SDS-PAGE)

Form

suspension

Packaging

pkg of 15 mL (05015979001 [settled resin volume])
pkg of 2 mL (11719408001 [settled resin volume])
pkg of 5 mL (11134515001 [settled resin volume])

Manufacturer/Tradename

Roche

Capacity

>18 mg/mL binding capacity (human IgG (polyclonal))(the IgG is loaded at pH 7.4 and eluted with 200 mm glycine, pH 2.0)

Storage Temp.

2-8°C

Related Categories

Antibody Protein Purification

Roche® Life Science Products

General Description

The use of recombinant Protein A in the production of Protein A agarose has the advantage that it is entirely free from Staphylococcal enterotoxins that are known to be mitogenic, and are contaminants in Protein A isolated fromS. aureus. The immobilization chemistry provides high IgG-binding capacity and leak-proof stability under a wide range of pH and buffer conditions. The gel can be used over 30 times, depending on the elution condition.

Protein A leakage:<18 ng Protein A/mL (ELISA)
Regeneration:the gel can be used approximately 30 times
Structure:recombinant Protein A (E. coli, Mr = 45,000) is covalently coupled to crosslinked 6% agarose beads: 3 mg Protein A (>98% pure, HPLC, SDS-Page)/1 mL gel
Protein A, immobilized.

Specificity

Protein A is a cell wall protein, isolated from a specific bacterial strain, which has specific binding sites for certain classes of immunoglobulins from different species. Protein A binds to varying degrees IgM, IgA, IgD, and most subclasses of IgG.

Application

Purification of mouse monoclonal antibodies from ascites fluid or cell culture supernatants. Protein A or Protein g Agarose affinity matrix can be used to purify antibodies from crude cell extractsand for the immunoprecipitation or co-immunoprecipitation of proteins. It has also been used for photoactivatable-ribonucleoside-enhanced cross-linking immunoprecipitation (PAR-CLIP) analysis.[5]

Components

Preswollen gel, ready-to-use, 2 mL or 5 mL gel (settled gel volume) in buffer that contains 20% ethanol as a preservative, nonsterile.
Protein A content:3 mg/mL pre-swollen gel

Quality

Purity: >98% (HPLC, SDS-PAGE); entirely free from staphylococcal enterotoxins.

Other Notes

For life science research only. Not for use in diagnostic procedures.

Pictograms

GHS02,GHS07

Signalword

Warning

Hcodes

H226 - H319

Pcodes

P210 - P280 - P303 + P361 + P353 - P337 + P313 - P370 + P378 - P403 + P235

Hazard Classifications

Eye Irrit. 2 - Flam. Liq. 3

Storage Class

3 - Flammable liquids

Wgk_Germany

WGK 1

Flash_Point_F

102.2 °F

Flash_Point_C

39 °C