Structural insights into ADP-ribosylation of ubiquitin by Deltex family E3 ubiquitin ligases.
Structural insights into ADP-ribosylation of ubiquitin by Deltex family E3 ubiquitin ligases.
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DOI:
10.1126/sciadv.abc0418
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发表时间:
2020-09
期刊:
影响因子:
13.6
通讯作者:
Huang DT
中科院分区:
文献类型:
--
作者:
Chatrin C;Gabrielsen M;Buetow L;Nakasone MA;Ahmed SF;Sumpton D;Sibbet GJ;Smith BO;Huang DT
The C-terminal RING and DTC domains of mammalian Deltex proteins catalyze ADP-ribosylation at the C terminus of ubiquitin. Cellular cross-talk between ubiquitination and other posttranslational modifications contributes to the regulation of numerous processes. One example is ADP-ribosylation of the carboxyl terminus of ubiquitin by the E3 DTX3L/ADP-ribosyltransferase PARP9 heterodimer, but the mechanism remains elusive. Here, we show that independently of PARP9, the conserved carboxyl-terminal RING and DTC (Deltex carboxyl-terminal) domains of DTX3L and other human Deltex proteins (DTX1 to DTX4) catalyze ADP-ribosylation of ubiquitin’s Gly76. Structural studies reveal a hitherto unknown function of the DTC domain in binding NAD+. Deltex RING domain recruits E2 thioesterified with ubiquitin and juxtaposes it with NAD+ bound to the DTC domain to facilitate ADP-ribosylation of ubiquitin. This ubiquitin modification prevents its activation but is reversed by the linkage nonspecific deubiquitinases. Our study provides mechanistic insights into ADP-ribosylation of ubiquitin by Deltex E3s and will enable future studies directed at understanding the increasingly complex network of ubiquitin cross-talk.
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影响因子:
16
作者:
Faesen, Alex C.;Dirac, Annette M. G.;Sixma, Titia K.
通讯作者:
Sixma, Titia K.
影响因子:
4.8
作者:
Aguiar, RCT;Takeyama, K;Shipp, MA
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Shipp, MA
影响因子:
16.8
作者:
Dou, Hao;Buetow, Lori;Sibbet, Gary J.;Cameron, Kenneth;Huang, Danny T.
通讯作者:
Huang, Danny T.
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
DOI:
10.1107/s0907444909042073
发表时间:
2010-01
期刊:
Acta crystallographica. Section D, Biological crystallography
影响因子:
--
作者:
Chen VB;Arendall WB 3rd;Headd JJ;Keedy DA;Immormino RM;Kapral GJ;Murray LW;Richardson JS;Richardson DC
通讯作者:
Richardson DC