Protein A – Alkaline Phosphatase (AP) conjugates

Expedeon’s Protein A – Alkaline Phosphatase (AP) conjugates are manufactured using our Lightning-Link® antibody labeling technology, therefore providing extremely high quality, stable conjugates.

For added flexibility we provide the conjugates in two different pack sizes of 100ug and 1mg. Furthermore the conjugates are freeze-dried so shipping at ambient temperature is not a problem.


Specificity Most mammalian IgGs
Host species E.coli and Bovine
Format Lyophilized
Product size  100ug and 1mg total protein
Buffer Phosphate Buffer
Storage -20°C

Additional information

Protein A is a 42kDa surface protein of the bacterium Staphylococcus aureus, which binds the Fc region of many mammalian IgGs. Its high affinity for immunoglobulins is the reason that it is often used in biochemical research.

Alkaline Phosphatase is a hydrolase enzyme. It is extracted from bovine intestine and purified using multiple precipitation, fractionation, chromatography, and filtration steps. Alkaline Phosphatase is frequently employed in immunoassays, and a commonly used colorimetric substrate for it is PNPP; the product of this reaction, p-nitrophenol, can be read at 405nm. Fluorogenic substrates such as 4-methylumbelliferyl phosphate (MUP) may also be used.

Please get in contact with us to know more about this product.

Fluorescence intensity of Expedeon’s Protein A – Alkaline Phosphatase conjugate versus competitor

Figure 1. A Protein A – Alkaline Phosphatase conjugate was purchased from a commercial supplier. The conjugate was compared to Protein A – Alkaline Phosphatase from Expedeon in an ELISA. It can be seen that the Expedeon’ Protein A – Alkaline Phosphatase conjugate outperforms the competitor.

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