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Shigella Effectors at Work - EMBO

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OspD1<br />

MxiE<br />

« First wave » of<br />

effectors expressed<br />

<strong>at</strong> 37°C prior to<br />

activ<strong>at</strong>ion of TTSS<br />

OspD1<br />

IpaA<br />

virF virB<br />

37°C<br />

ipaBCDA-ipg(s) ipg(s)-mxi - spa (mxiE)<br />

IpaB IpgC<br />

IpaD<br />

IpaD<br />

IpaD<br />

IpaC<br />

virF virB<br />

37°C<br />

IpgC<br />

osp(s)-ipaH(s)<br />

Spa15<br />

IpaA<br />

IpgE<br />

IpgD<br />

osp(s)-ipaH(s)-virA<br />

OspD1<br />

MxiE<br />

ipaBCDA-ipg(s) ipg(s)-mxi - spa (mxiE)<br />

IpaB<br />

IpaD IpaD<br />

IpaD<br />

IpaC<br />

IpgD IpgD<br />

IpaA IpaA<br />

IpaD<br />

MxiE MxiE<br />

MxiE<br />

MxiE<br />

IpgC<br />

IpgC<br />

IpaD<br />

MxiE<br />

IpaB IpaB<br />

<strong>Shigella</strong><br />

IpaD IpaD<br />

IpaD<br />

IpaD IpaD<br />

Inactive TTSS in<br />

absence of<br />

cellular target<br />

IIpaC IIpaC<br />

IpgC<br />

Activ<strong>at</strong>ed TTSS in<br />

presence of<br />

cellular target<br />

IpgD<br />

OspD1<br />

Buchrieser et al., 1998, Mol.Microbiol.

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