Architecture of the type IV coupling protein complex of Legionella pneumophila.
Architecture of the type IV coupling protein complex of Legionella pneumophila.
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肺炎军团菌的IV型偶联蛋白复合物的结构。
DOI:
10.1038/nmicrobiol.2017.114
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发表时间:
2017-07-17
影响因子:
28.3
通讯作者:
Oh BH
中科院分区:
文献类型:
--
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
Many bacteria, including Legionella pneumophila, rely on the type IV secretion system to translocate a repertoire of effector proteins into the hosts for their survival and growth. Type IV coupling protein (T4CP) is a hexameric ATPase that links translocating substrates to the transenvelope secretion conduit. Yet, how a large number of effector proteins are selectively recruited and processed by T4CPs remains enigmatic. DotL, the T4CP of L. pneumophila, contains an ATPase domain and a C-terminal extension whose function is unknown. Unlike T4CPs involved in plasmid DNA translocation, DotL appeared to function by forming a multiprotein complex with four other proteins. Here, we show that the C-terminal extension of DotL interacts with DotN, IcmS, IcmW and an additionally identified subunit LvgA, and that this pentameric assembly binds Legionella effector proteins. We determined the crystal structure of this assembly and built an architecture of the T4CP holocomplex by combining a homology model of the ATPase domain of DotL. The holocomplex is a hexamer of a bipartite structure composed of a membrane-proximal ATPase domain and a membrane-distal substrate-recognition assembly. The presented information demonstrates the architecture and functional dissection of the multiprotein T4CP complexes and provides important insights into their substrate recruitment and processing.
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影响因子:
3.6
作者:
Atmakuri, K;Ding, ZY;Christie, PJ
通讯作者:
Christie, PJ
影响因子:
2.9
作者:
Joo, Keehyoung;Lee, Jinwoo;Lee, Jooyoung
通讯作者:
Lee, Jooyoung
影响因子:
3.6
作者:
Atmakuri, K;Cascales, E;Christie, PJ
通讯作者:
Christie, PJ
影响因子:
3.6
作者:
Bardill, JP;Miller, JL;Vogel, JP
通讯作者:
Vogel, JP
DOI:
10.1107/s0907444909052925
发表时间:
2010-02
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Adams PD;Afonine PV;Bunkóczi G;Chen VB;Davis IW;Echols N;Headd JJ;Hung LW;Kapral GJ;Grosse-Kunstleve RW;McCoy AJ;Moriarty NW;Oeffner R;Read RJ;Richardson DC;Richardson JS;Terwilliger TC;Zwart PH
通讯作者:
Zwart PH