Product nameNative Protein A (HRP)
See all Protein A proteins and peptides
Protein lengthFull length protein
Our Abpromise guarantee covers the use of ab7456 in the following tested applications.
The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Immunohistochemistry (Frozen sections)
Additional notesMolecular Weight (protein A): 42,000 daltons Extinction Coefficient: 0.1% at 280 nm is 0.14 (E0.1% of 0.14)
Concentration information loading...
Preparation and Storage
Stability and Storage
Shipped at 4°C. Store at +4°C.
Preservative: 0.01% Gentamicin sulphate
Constituents: 0.42% Potassium phosphate, 0.87% Sodium chloride, 1.5% BSA
- gG-binding protein A
- Immunoglobulin G binding protein A
- Staphylococcal protein A
RelevanceProtein A is a surface protein of S.aureus which binds IgG molecules by their Fc region. In serum, the bacteria will bind IgG molecules in the wrong orientation on their surface which hinders opsonization and phagocytosis. Mutants of S. aureus lacking protein A are more efficiently phagocytosed in vitro, and mutants in infection models have diminished virulence. Due to its affinity for the Fc region of many mammalian immunoglobulins, protein A is considered a universal reagent in biochemistry and immunology.
Cellular localizationSecreted; cell wall.
This product has been referenced in:
- Kuninaga N et al. Serological and histological evaluation of species-specific immunocontraceptive vaccine antigens based on zona pellucida 3 in the small Indian mongoose (Herpestes auropunctatus). J Vet Med Sci 81:328-337 (2019). Read more (PubMed: 30587673) »
- Mahajan D et al. Dopey1-Mon2 complex binds to dual-lipids and recruits kinesin-1 for membrane trafficking. Nat Commun 10:3218 (2019). Read more (PubMed: 31324769) »