Reconstitution and structure of a bacterial Pnkp1-Rnl-Hen1 RNA repair complex.
Reconstitution and structure of a bacterial Pnkp1-Rnl-Hen1 RNA repair complex.
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DOI:
10.1038/ncomms7876
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发表时间:
2015-04-17
影响因子:
16.6
通讯作者:
Huang RH
中科院分区:
文献类型:
--
作者:
Wang P;Selvadurai K;Huang RH
Ribotoxins cleave essential RNAs for cell killing, and RNA repair neutralizes the damage inflicted by ribotoxins for cell survival. Here we report a new bacterial RNA repair complex that performs RNA repair linked to immunity. This new RNA repair complex is a 270-kDa heterohexamer composed of three proteins—Pnkp1, Rnl and Hen1—that are required to repair ribotoxin-cleaved RNA in vitro. The crystal structure of the complex reveals the molecular architecture of the heterohexamer as two rhomboid-shaped ring structures of Pnkp1–Rnl–Hen1 heterotrimer fused at the Pnkp1 dimer interface. The four active sites required for RNA repair are located on the inner rim of each ring. The architecture and the locations of the active sites of the Pnkp1–Rnl–Hen1 heterohexamer suggest an ordered series of repair reactions at the broken RNA ends that confer immunity to recurrent damage. Bacterial ribotoxins target and cleave RNAs involved in translation, with target organism resistance being mediated by RNA repair systems. Here, Wang et al. identify, report the crystal structure, and characterize the activity of Pnkp1–Rnl–Hen1, a novel RNA repair complex from Capnocytophaga gingivalis.
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影响因子:
11.8
作者:
Fredricks, DN;Schubert, MM;Myerson, D
通讯作者:
Myerson, D
DOI:
10.1107/s0907444904019158
发表时间:
2004-12-01
影响因子:
2.2
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作者:
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作者:
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通讯作者:
Stoddard, BL
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