Protein A is a cell wall componentsI composed of a single polypeptide chain of molecular weight 42 kDa produced by Staphylococcous aereus (Cowan Strain). The protein A employed  is recombinant form containing the Fc binding sites without any albumin binding sites. Protein A is capable of binding to the Fc portion of immunoglobulins, especially IgGs, from a large number of species. Protein A will bind the Fc portion of human IgG subclasses, IgM, IgA and IgE; and mouse IgG1 (weakly), IgG2a and IgG2b. Protein A also binds IgGs from other species, including monkey, rabbit, pig, guinea pig, dog and cat.

• Adembeads coupled with protein A present a perfect spherical shape  with an important surface area (10 square meter / g)
• Convenient for small scale Ig purification and immunoprecipitation.
• Starting sample can be saliva, plasma, ascites, serum and tissue culture or hybridoma supernatants.
• Magnetic technology (= No columns without centrifugation) introducing a high specificity
• Rapid procedure (<1h)
• Recombinant form of the protein A without albumin-binding sites, thus reducing co-purification of contaminating proteins. Only the Fc binding sites are present.
• Convenient for a large number of immunoprecipitation: up to 100 per ml
• Typical results:

Bio-Adembeads (300nm) coated with high quality Protein A covalently coupled to the surface. This product is available in:
- 2ml / 04230 (100 immunoprecipitations)
- 5ml / 04231 (250 immunoprecipitations)
Supplied in storage buffer (code number 10201) proclin 300 as a preservative.

PAG Elution Buffer (code number 10701) = Optimized elution method in order not to release antibody crosslinked to Bio-Adembeads Protein A

References for Bio-Adembeads Protein A/G/AG and ChIP-Adembeads Protein A/G
1- Genes & Development 20:836-847, 2006, Role of heat-shock factor 2 in cerebral cortex formation and as a regulatorof p35 expression, Yunhua Chang, Päivi Östling, Malin Åkerfelt, Diane Trouillet, Murielle Rallu, Yorick Gitton, Rachid El Fatimy, Vivienne Fardeau, Stéphane Le Cro, Michel Morange, Lea Sistonen and Valérie Mezger
 
2-  Nucleic Acids Research Advance Access published online on April 25, 2007, A bona fide La protein is required for embryogenesis in Arabidopsis thaliana, Sophie Fleurdépine, Jean-Marc Deragon, Martine Devic, Jocelyne Guilleminot and Cécile Bousquet-Antonelli

3- The Plant Journal Volume 50 Issue 2 Page 197-206, April 2007, The auxin-binding protein 1 is essential for the control of cell cycle Karine M. David, D. Couch, N. Braun, S. Brown, J. Grosclaude and C. Perrot-Rechenmann

4- Journal of Cell Communication and Signaling, 1873-9601, 8 September 2007 Domain-specific CCN3 antibodies as unique tools for structural and functional studies, Noureddine Lazar, Cristina Manara, Samuel Navarro, Anne-Marie Bleau, Antonio Llombart-Bosch, Katia Scotlandi, Nathalie Planque and Bernard Perbal

5- Talanta (2008):Enzymes-linked immunosorbent assay ELISA based on superparamagnetic nanoparticles for aflatoxin M1 detection, A.Radoi, M targa, B.Prieto-Simon, J l Marty
 
6- Journal of Bacteriology, August 2009, p. 4943-4950, Vol. 191, No. 15,The StkP/PhpP Signaling Couple in Streptococcus pneumoniae: Cellular Organization and Physiological Characterization, Makoto Osaki,Tania Arcondéguy, Amandine Bastide, Christian Touriol, Hervé Prats, and Marie-Claude Trombe

7- Blood, 2009 Sep 17;114(12):2427-38. Epub 2009 Jul 14, Human T-cell leukemia virus type 2 produces a spliced antisense transcript encoding a protein that lacks a classic bZIP domain but still inhibits Tax2-mediated transcription, Halin M, Douceron E, Clerc I, Journo C, Ko NL, Landry S, Murphy EL, Gessain A, Lemasson I, Mesnard JM, Barbeau B, Mahieux R.

8- PLoS Pathog., 2009 Jul;5(7):e1000521. Epub 2009 Jul 17, NRP/Optineurin Cooperates with TAX1BP1 to potentiate the activation of NF-kappaB by human T-lymphotropic virus type 1 tax protein. Journo C, Filipe J, About F, Chevalier SA, Afonso PV, Brady JN, Flynn D, Tangy F, Israël A, Vidalain PO, Mahieux R, Weil R.

9- Brain Research Bulletin, Volume 80, Issues 4-5, 28 October 2009, Pages 296-301,The presenilin-1 familial Alzheimer's disease mutation P117L decreases neuronal differentiation of embryonic murine neural progenitor cells, Lorenza Eder-Colli, Noelia Abad-Estarlich, Carine Pannetier, Philippe G. Vallet, Claude Walzer, Gregory A. Elder, Nikolaos K. Robakis, Constantin Bouras, Armand Savioz

10- Human Pathology, Volume 40, Issue 10, October 2009, Pages 1479-1486,  Prognostic relevance of CCN3 in Ewing sarcoma, Bernard Perbal, Noureddine Lazar, Diana Zambelli, Jose Antonio Lopez-Guerrero, Antonio Lombart-Bosch, Katia Scotlandi, Piero Picci 

11- Genes & Dev. 2009. 23: 1399-1407, Metabolic intermediates selectively stimulate transcription factor interaction and modulate phosphate and purine pathways Benoît Pinson, Sabine Vaur,Isabelle Sagot, Fanny Coulpier, Sophie Lemoine, Bertrand Daignan-Fornier