Protein A, Recombinant, S.aureus, aa37-469 (Immunoglobulin G binding protein A)
Description
Purity ~90% (SDS-PAGE). Protein A is a 40-60kD surface protein originally found in the cell wall of the bacteria Staphylococcus aureus. It binds with high affinity to human IgG1 and IgG2 as well as mouse IgG2a and IgG2b. Protein A binds with moderate affinity to human IgM, IgA and IgE as well as to mouse IgG3 and IgG1. Due to its affinity for the Fc region of many mammalian immunoglobulins, protein A is considered a universal reagent in biochemistry and immunology. Source: Recombinant protein corresponding to aa37-469 of S.aureus Protein A expressed in E. coli. Molecular Weight: ~48.1kD Endotoxin: ~1EU/1ug of protein (LAL) AA