Cryo-EM structure of the deltaretroviral intasome in complex with the PP2A regulatory subunit B56γ.
Cryo-EM structure of the deltaretroviral intasome in complex with the PP2A regulatory subunit B56γ.
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DOI:
10.1038/s41467-020-18874-y
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发表时间:
2020-10-07
影响因子:
16.6
通讯作者:
Maertens GN
中科院分区:
文献类型:
--
作者:
Barski MS;Minnell JJ;Hodakova Z;Pye VE;Nans A;Cherepanov P;Maertens GN
Human T-cell lymphotropic virus type 1 (HTLV-1) is a deltaretrovirus and the most oncogenic pathogen. Many of the ~20 million HTLV-1 infected people will develop severe leukaemia or an ALS-like motor disease, unless a therapy becomes available. A key step in the establishment of infection is the integration of viral genetic material into the host genome, catalysed by the retroviral integrase (IN) enzyme. Here, we use X-ray crystallography and single-particle cryo-electron microscopy to determine the structure of the functional deltaretroviral IN assembled on viral DNA ends and bound to the B56γ subunit of its human host factor, protein phosphatase 2 A. The structure reveals a tetrameric IN assembly bound to two molecules of the phosphatase via a conserved short linear motif. Insight into the deltaretroviral intasome and its interaction with the host will be crucial for understanding the pattern of integration events in infected individuals and therefore bears important clinical implications. Human T-cell lymphotropic virus type 1 (HTLV-1) is a pathogenic deltaretrovirus. Here the authors resolve the cryo-EM structure of the deltaretroviral intasome in complex with the human host PP2A regulatory subunit.
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Barad BA;Echols N;Wang RY;Cheng Y;DiMaio F;Adams PD;Fraser JS
通讯作者:
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DOI:
10.1107/s0907444904019158
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2004-12-01
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2000-07-18
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Xu, Wenqing