protein A

https://doi.org/10.1351/goldbook.13616

Staphylococcus aureus cell wall protein that binds to the Fc region of immunoglobulin G (IgG).

Source:
PAC, 2012, 84, 1113. (IUPAC glossary of terms used in immunotoxicology (IUPAC Recommendations 2012)) on page 1236 [Terms] [Paper]