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Title: Structure and function of the complex formed by the tuberculosis virulence factors CFP-10 and ESAT-6.
Authors: Renshaw, PS
Lightbody, KL
Veverka, V
Muskett, FW
Kelly, G
Frenkiel, TA
Gordon, SV
Hewinson, RG
Burke, B
Norman, J
Williamson, RA
Carr, MD
First Published: 20-Jul-2005
Citation: EMBO J, 2005, 24 (14), pp. 2491-2498
Abstract: The secreted Mycobacterium tuberculosis complex proteins CFP-10 and ESAT-6 have recently been shown to play an essential role in tuberculosis pathogenesis. We have determined the solution structure of the tight, 1:1 complex formed by CFP-10 and ESAT-6, and employed fluorescence microscopy to demonstrate specific binding of the complex to the surface of macrophage and monocyte cells. A striking feature of the complex is the long flexible arm formed by the C-terminus of CFP-10, which was found to be essential for binding to the surface of cells. The surface features of the CFP-10.ESAT-6 complex, together with observed binding to specific host cells, strongly suggest a key signalling role for the complex, in which binding to cell surface receptors leads to modulation of host cell behaviour to the advantage of the pathogen.
DOI Link: 10.1038/sj.emboj.7600732
ISSN: 0261-4189
Type: Journal Article
Appears in Collections:Published Articles, Dept. of Biochemistry

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