Receptors interleukin-2

From Biology-Online Dictionary
Jump to: navigation, search

receptors, interleukin-2

receptors present on activated t- and b-cells as a complex consisting of a 55 kD peptide, which reacts with the anti-tac monoclonal antibody, and a 75 kD non-tac interleukin-2-binding peptide. The receptor is present in two forms, one with a very high affinity and the other with low affinity for il-2. The high-affinity form appears to mediate exclusively the growth-promoting response to il-2. The receptor is present in large numbers on resting hTLV-I leukaemia cells, but not on normal resting cells.