Cryo-EM structure of the RADAR supramolecular anti-phage defense complex.

Cryo-EM structure of the RADAR supramolecular anti-phage defense complex.
复制标题

雷达超分子抗流量防御复合物的冷冻EM结构。

DOI:
10.1016/j.cell.2023.01.012
复制
发表时间:
2023-03-02
期刊:
影响因子:
64.5
通讯作者:
Kranzusch, Philip J.
Kranzusch, Philip J.
中科院分区:
生物学1区
文献类型:
--
作者:
Duncan-Lowey, Brianna;Tal, Nitzan;Johnson, Alex G.;Rawson, Shaun;Mayer, Megan L.;Doron, Shany;Millman, Adi;Melamed, Sarah;Fedorenko, Taya;Kacen, Assaf;Brandis, Alexander;Mehlman, Tevie;Amitai, Gil;Sorek, Rotem;Kranzusch, Philip J.

文献摘要

参考文献

被引文献

相似文献

雷达是一种两蛋白细菌防御系统,据报道,通过“编辑” Messenger RNA来防御噬菌体。作为十二座的空心络合物,具有十二个表面暴露的脱氨酶活性位点。在RDRB的活性位置上,我们的结构揭示了一个靶向单核苷酸的RDRB活性位点。我们的结果将ATP单核苷酸的脱氨酸定义为雷达免疫的确定,并揭示了核改装机器的超分子组装作为一种机制防水防御。 雷达防御系统通过ATP死亡抑制噬菌体复制 冷冻EM结构表明,RDRA和RDRB组装以形成一个巨大的10 MDA复合物 RDRB是一种腺苷脱氨酶,可催化ITP和DITP的大量积累 RDRA影响RDRB活性,并可能控制噬菌体感染的感应 在雷达系统中,腺苷死亡酶RDRB与RDRA形成了巨大的复合物,雷达超分子复合物触发了响应于噬菌体感染的快速ATP到ITP转换。
RADAR is a two-protein bacterial defense system that was reported to defend against phage by “editing” messenger RNA. Here, we determine cryo-EM structures of the RADAR defense complex, revealing RdrA as a heptameric, two-layered AAA+ ATPase and RdrB as a dodecameric, hollow complex with twelve surface-exposed deaminase active sites. RdrA and RdrB join to form a giant assembly up to 10 MDa, with RdrA docked as a funnel over the RdrB active site. Surprisingly, our structures reveal an RdrB active site that targets mononucleotides. We show that RdrB catalyzes ATP-to-ITP conversion in vitro and induces the massive accumulation of inosine mononucleotides during phage infection in vivo, limiting phage replication. Our results define ATP mononucleotide deamination as a determinant of RADAR immunity and reveal supramolecular assembly of a nucleotide-modifying machine as a mechanism of anti-phage defense. RADAR defense system inhibits phage replication through ATP deamination Cryo-EM structures reveal that RdrA and RdrB assemble to form a giant 10 MDa complex RdrB is an adenosine deaminase that catalyzes massive accumulation of ITP and dITP RdrA induces RdrB activity and may control sensing of phage infection In the RADAR system, the adenosine deaminase RdrB forms a giant complex with RdrA, and the RADAR supramolecular complex triggers rapid ATP-to-ITP conversion in response to phage infection.
DOI: 10.1126/science.aba0372
发表时间: 2020-08-28
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Gao L;Altae-Tran H;Böhning F;Makarova KS;Segel M;Schmid-Burgk JL;Koob J;Wolf YI;Koonin EV;Zhang F
通讯作者: Zhang F
DOI: 10.1126/science.aad9822
发表时间: 2016-04-08
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Dar D;Shamir M;Mellin JR;Koutero M;Stern-Ginossar N;Cossart P;Sorek R
通讯作者: Sorek R
DOI: 10.1107/s0907444904019158
发表时间: 2004-12-01
影响因子: 2.2
作者:
Emsley, P;Cowtan, K
通讯作者: Cowtan, K
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: 10.1126/science.aar4120
发表时间: 2018-03-02
期刊: Science (New York, N.Y.)
影响因子: --
作者:
Doron S;Melamed S;Ofir G;Leavitt A;Lopatina A;Keren M;Amitai G;Sorek R
通讯作者: Sorek R