Protein A

Protein A — This category gathers native and recombinant Protein A variants based on Staphylococcus aureus, conjugated with enzymes, biotin, or agarose matrix. This group serves as an affinity reagent that binds the Fc region of immunoglobulins, mainly IgG, without relying on the antigen-binding site.

Protein A is used by molecular biology and immunology researchers for antibody purification through affinity chromatography, ELISA-based detection, western blot, or immunoprecipitation. HRP and biotin conjugates facilitate layered detection systems, while the agarose form is suitable for capturing and isolating immune complexes from samples such as serum or cell lysates.

Example products in this collection: TCI P2466 Protein A HRP Conjugate, TCI P2366 Protein A Recombinant, expressed in Escherichia coli, TCI P2461 Protein A Agarose, TCI P2407 Protein A Biotin Conjugate.

The choice of format (agarose, HRP conjugate, biotin, or pure recombinant) is tailored to the workflow—column purification, enzymatic detection, or biotin-streptavidin systems—as well as the expression source and protein purity level. All products are genuine Tokyo Chemical Industry (TCI) Japan products, with purity, packaging, and storage conditions listed on each item's page.

Other parallel categories under Antibody Supplementary Products, often used together in one laboratory workflow:

Back to Antibody Supplementary Products. For large-volume procurement, custom packaging, or specific grades, contact the AMI Scientific team — the official distributor of TCI Japan in Indonesia — to check availability and lead time directly from Japan.

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