Fusion proteins with immunoglobulin binding properties, their uses and related methods and compositions are disclosed. The fusion proteins are comprised of an antibody-binding fragment of protein M from Mycoplasma spp. conjugated to a receptor fragment. The receptor fragment is a protein fragment to which a pathogen, a toxin or a cancer cell can specifically bind. The fusion proteins can be used to neutralize or eradicate a wide group of pathogens, toxins or cancer cells.

Fusion proteins with immunoglobulin binding properties, their uses and related methods and compositions are disclosed. The fusion proteins are comprised of an antibody-binding fragment of protein M from Mycoplasma spp. conjugated to a receptor fragment. The receptor fragment is a protein fragment to which a pathogen or a toxin can specifically bind. The fusion proteins can be used to neutralize or eradicate a wide group of pathogens or toxins.