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Granulocyte-macrophage colony-stimulating factor receptor

The granulocyte-macrophage colony-stimulating factor receptor also known as CD116 (Cluster of Differentiation 116), is a receptor for granulocyte-macrophage colony-stimulating factor, which stimulates the production of white blood cells. The receptor is normally located on myeloblast, mature neutrophil, but not on any erythroid or megakaryocytic lineage cells.[1]

It is associated with Surfactant metabolism dysfunction type 4.

Structure

Structure

The granulocyte-macrophage colony-stimulating factor receptor is a heterodimer composed of at least two different subunits; an α chain, and a β chain which is also present in the receptors for IL-3 and IL-5. The α subunit contains a binding site for granulocyte macrophage colony-stimulating factor.[2] The β chain is involved in signal transduction. Association of the α and β subunits results in receptor activation.[3]

Signal transduction

Signal transduction

Upon dimerisation of the α and β subunits the β subunit becomes phosphorylated on tyrosine residues by members of the Janus kinase (JAK) family.[3] This leads to association with a Shc adaptor protein. Then Shc interacts with GRB2/SoS complex which results in activation of more downstream molecules in the pathway.[4]

References

References

  1. Nicola NA, Metcalf D (Aug 1985). “Binding of 125I-labeled granulocyte colony-stimulating factor to normal murine hemopoietic cells”. Journal of Cellular Physiology. 124 (2): 313–21. doi:10.1002/jcp.1041240222. PMID 3876343.
  2. McClure BJ, Hercus TR, Cambareri BA, Woodcock JM, Bagley CJ, Howlett GJ, Lopez AF (Feb 2003). “Molecular assembly of the ternary granulocyte-macrophage colony-stimulating factor receptor complex”. Blood. 101 (4): 1308–15. doi:10.1182/blood-2002-06-1903. PMID 12393492.
  3. 3.0 3.1 Geijsen N, Koenderman L, Coffer PJ (Mar 2001). “Specificity in cytokine signal transduction: lessons learned from the IL-3/IL-5/GM-CSF receptor family”. Cytokine & Growth Factor Reviews. 12 (1): 19–25. doi:10.1016/S1359-6101(00)00019-8. PMID 11312115.
  4. Doyle SE, Gasson JC (Aug 1998). “Characterization of the role of the human granulocyte-macrophage colony-stimulating factor receptor alpha subunit in the activation of JAK2 and STAT5” (– Scholar search). Blood. 92 (3): 867–76. PMID 9680354.
Further reading

Further reading

External links

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