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Shigella Effectors at Work - EMBO

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Model of assembly of the TTSS<br />

Outer membrane<br />

ring<br />

(secretin/pilotin)<br />

MxiD<br />

MxiM<br />

Sani et al., 2006<br />

Veenendaal et al., 2007<br />

IpaD<br />

+ IpaB<br />

Sec-dependent Sec-independent / TTSS dependent<br />

MxiH<br />

MxiI<br />

MxiA,<br />

Spa40, 24, 29, 9, 13? MxiK, N MxiI Spa32 Secretion<br />

MxiJ<br />

inner rod Needle length<br />

Spa33,<br />

MxiG<br />

control/ of effector<br />

Spa 47 (ATPase) substr<strong>at</strong>e switch molecules<br />

Inner membrane ring<br />

Needle assembly and secretion<br />

From Abdelmounaim Allaoui

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