Legionella DotM structure reveals a role in effector recruiting to the Type 4B secretion system.
Legionella DotM structure reveals a role in effector recruiting to the Type 4B secretion system.
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DOI:
10.1038/s41467-017-02578-x
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发表时间:
2018-02-06
影响因子:
16.6
通讯作者:
Waksman G
中科院分区:
文献类型:
--
作者:
Meir A;Chetrit D;Liu L;Roy CR;Waksman G
Legionella pneumophila, a causative agent of pneumonia, utilizes the Type 4B secretion (T4BS) system to translocate over 300 effectors into the host cell during infection. T4BS systems are encoded by a large gene cluster termed dot/icm, three components of which, DotL, DotM, and DotN, form the “coupling complex”, which serves as a platform for recruitment of effector proteins. One class of effectors includes proteins containing Glu-rich/E-block sequences at their C terminus. However, the protein or region of the coupling complex mediating recruitment of such effectors is unknown. Here we present the crystal structure of DotM. This all alpha-helical structure exhibits patches of positively charged residues. We show that these regions form binding sites for acidic Glu-rich peptides and that mutants targeting these patches are defective in vivo in the translocation of acidic Glu-rich motif-containing effectors. We conclude that DotM forms the interacting surface for recruitment of acidic Glu-rich motif-containing Legionella effectors. Legionella pneumophila employs the Type 4B secretion system (T4BSS) to translocate more than 300 effector proteins into the host cell during infection. Here the authors present the crystal structure of the DotM soluble domain and give mechanistic insights into the recruitment of Glu-rich motif-containing effectors to the T4BSS.
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DOI:
10.1084/jem.158.6.2108
发表时间:
1983-12-01
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Horwitz MA
通讯作者:
Horwitz MA
影响因子:
2.9
作者:
JONES, DT;TAYLOR, WR;THORTON, JM
通讯作者:
THORTON, JM
影响因子:
3.6
作者:
Jeong, Kwang Cheol;Sutherland, Molly C.;Vogel, Joseph P.
通讯作者:
Vogel, Joseph P.
影响因子:
28.3
作者:
Kwak MJ;Kim JD;Kim H;Kim C;Bowman JW;Kim S;Joo K;Lee J;Jin KS;Kim YG;Lee NK;Jung JU;Oh BH
通讯作者:
Oh BH
DOI:
10.1016/j.bbamcr.2013.12.019
发表时间:
2014-08
影响因子:
5.1
作者:
Christie, Peter J.;Whitaker, Neal;Gonzalez-Rivera, Christian
通讯作者:
Gonzalez-Rivera, Christian