Related proteins of the immune system (RPI)
The related proteins of the immune system (RPI) comprise the proteins of the immunoglobulin superfamily (IgSF) other than IG and TR, the proteins of the major histocompatibility superfamily (MhSF) other than MH, cytokines and their receptors, integrins, proteins of the scavenger receptor superfamily (SrSF) and any protein found in vivo that is, directly or indirectly, involved in the immune response.