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2a9i
From Proteopedia
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Molecular Structure of the Interleukin-1 Receptor-Associated Kinase-4 Death Domain
Overview
IL-1R-associated kinase (IRAK) 4 is an essential component of innate immunity. IRAK-4 deficiency in mice and humans results in severe impairment of IL-1 and TLR signaling. We have solved the crystal structure for the death domain of Mus musculus IRAK-4 to 1.7 A resolution. This is the first glimpse of the structural details of a mammalian IRAK family member. The crystal structure reveals a six-helical bundle with a prominent loop, which among IRAKs and Pelle, a Drosophila homologue, is unique to IRAK-4. This highly structured loop contained between helices two and three, comprises an 11-aa stretch. Although innate immune domain recognition is thought to be very similar between Drosophila and mammals, this structural component points to a drastic difference. This structure can be used as a framework for future mutation and deletion studies and potential drug design.
About this Structure
2A9I is a Single protein structure of sequence from Mus musculus with as ligand. Active as Non-specific serine/threonine protein kinase, with EC number 2.7.11.1 Full crystallographic information is available from OCA.
Reference
Cutting edge: molecular structure of the IL-1R-associated kinase-4 death domain and its implications for TLR signaling., Lasker MV, Gajjar MM, Nair SK, J Immunol. 2005 Oct 1;175(7):4175-9. PMID:16177054
Page seeded by OCA on Thu Feb 21 16:25:11 2008
