PMID: 21270123 , Related PDB id: 2L5X
Authors:
Mohan SK, Yu C
Title:
The IL1alpha-S100A13 heterotetrameric complex structure: a component in the non-classical pathway for interleukin 1alpha secretion.
Journal:
J Biol Chem. 2011 Apr 22;286(16):14608-17. Epub 2011 Jan 26.
Abstract:
Interleukin 1alpha (IL1alpha) plays an important role in several key biological functions, such as angiogenesis, cell proliferation, and tumor growth in several types of cancer. IL1alpha is a potent cytokine that induces a wide spectrum of immunological and inflammatory activities. The biological effects of IL1alpha are mediated through the activation of transmembrane receptors (IL1Rs) and therefore require the release of the protein into the extracellular space. IL1alpha is exported through a non-classical release pathway involving the formation of a specific multiprotein complex, which includes IL1alpha and S100A13. Because IL1alpha plays an important role in cell proliferation and angiogenesis, inhibiting the formation of the IL1alpha-S100A13 complex would be an effective strategy to inhibit a wide range of cancers. To understand the molecular events in the IL1alpha release pathway, we studied the structure of the IL1alpha-S100A13 tetrameric complex, which is the key complex formed during the non-classical pathway of IL1alpha release.