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Crystal structure of the C-terminal domain of mouse TLR9.


ABSTRACT: Toll-like receptors (TLRs) are important pattern recognition receptors that function in innate immunity. Elucidating the structure and signaling mechanisms of TLR9, a sensor of foreign and endogenous DNA, is essential for understanding its key role in immunity against microbial pathogens as well as in autoimmunity. Abundant evidence suggests that the TLR9-CTD (C-terminal domain) by itself is capable of DNA binding and signaling. The crystal structure of unliganded mouse TLR9-CTD is presented. TLR9-CTD exhibits one unique feature, a cluster of stacked aromatic and arginine side chains on its concave face. Overall, its structure is most related to the TLR8-CTD, suggesting a similar mode of ligand binding and signaling.

SUBMITTER: Collins B 

PROVIDER: S-EPMC4271629 | biostudies-literature | 2014 Oct

REPOSITORIES: biostudies-literature

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Crystal structure of the C-terminal domain of mouse TLR9.

Collins Bernard B   Wilson Ian A IA  

Proteins 20140616 10


Toll-like receptors (TLRs) are important pattern recognition receptors that function in innate immunity. Elucidating the structure and signaling mechanisms of TLR9, a sensor of foreign and endogenous DNA, is essential for understanding its key role in immunity against microbial pathogens as well as in autoimmunity. Abundant evidence suggests that the TLR9-CTD (C-terminal domain) by itself is capable of DNA binding and signaling. The crystal structure of unliganded mouse TLR9-CTD is presented. TL  ...[more]

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