part_of part of part of has part has part has_part in taxon transmembrane signaling receptor activity cytokine receptor activity hematopoietin/interferon-class (D200-domain) cytokine receptor activity GO:0004896 Combining with a cytokine and transmitting the signal from one side of the membrane to the other to initiate a change in cell activity. IL receptor molecular_function interleukin receptor activity cytokine-mediated signaling pathway cytokine binding immune receptor activity Fungi