1ziw
From Proteopedia
Human Toll-like Receptor 3 extracellular domain structure
Overview
Toll-like receptors (TLRs) play key roles in activating immune responses during infection. The human TLR3 ectodomain structure at 2.1 angstroms reveals a large horseshoe-shaped solenoid assembled from 23 leucine-rich repeats (LRRs). Asparagines conserved in the 24-residue LRR motif contribute extensive hydrogen-bonding networks for solenoid stabilization. TLR3 is largely masked by carbohydrate, but one face is glycosylation-free, which suggests its potential role in ligand binding and oligomerization. Highly conserved surface residues and a TLR3-specific LRR insertion form a homodimer interface in the crystal, whereas two patches of positively charged residues and a second insertion would provide an appropriate binding site for double-stranded RNA.
About this Structure
1ZIW is a Single protein structure of sequence from Homo sapiens. Full crystallographic information is available from OCA.
Reference
Crystal structure of human toll-like receptor 3 (TLR3) ectodomain., Choe J, Kelker MS, Wilson IA, Science. 2005 Jul 22;309(5734):581-5. Epub 2005 Jun 16. PMID:15961631 Page seeded by OCA on Sat May 3 17:40:51 2008
