ジャーナル: Science / 年: 2017 タイトル: A supramolecular assembly mediates lentiviral DNA integration. 著者: Allison Ballandras-Colas / Daniel P Maskell / Erik Serrao / Julia Locke / Paolo Swuec / Stefán R Jónsson / Abhay Kotecha / Nicola J Cook / Valerie E Pye / Ian A Taylor / Valgerdur ...著者: Allison Ballandras-Colas / Daniel P Maskell / Erik Serrao / Julia Locke / Paolo Swuec / Stefán R Jónsson / Abhay Kotecha / Nicola J Cook / Valerie E Pye / Ian A Taylor / Valgerdur Andrésdóttir / Alan N Engelman / Alessandro Costa / Peter Cherepanov / 要旨: Retroviral integrase (IN) functions within the intasome nucleoprotein complex to catalyze insertion of viral DNA into cellular chromatin. Using cryo-electron microscopy, we now visualize the ...Retroviral integrase (IN) functions within the intasome nucleoprotein complex to catalyze insertion of viral DNA into cellular chromatin. Using cryo-electron microscopy, we now visualize the functional maedi-visna lentivirus intasome at 4.9 angstrom resolution. The intasome comprises a homo-hexadecamer of IN with a tetramer-of-tetramers architecture featuring eight structurally distinct types of IN protomers supporting two catalytically competent subunits. The conserved intasomal core, previously observed in simpler retroviral systems, is formed between two IN tetramers, with a pair of C-terminal domains from flanking tetramers completing the synaptic interface. Our results explain how HIV-1 IN, which self-associates into higher-order multimers, can form a functional intasome, reconcile the bulk of early HIV-1 IN biochemical and structural data, and provide a lentiviral platform for design of HIV-1 IN inhibitors.
履歴
登録
2016年8月25日
登録サイト: RCSB / 処理サイト: PDBE
改定 1.0
2017年1月18日
Provider: repository / タイプ: Initial release
改定 2.0
2024年1月17日
Group: Atomic model / Data collection ...Atomic model / Data collection / Database references / Refinement description カテゴリ: atom_site / chem_comp_atom ...atom_site / chem_comp_atom / chem_comp_bond / database_2 / pdbx_initial_refinement_model Item: _atom_site.occupancy / _database_2.pdbx_DOI / _database_2.pdbx_database_accession
解像度: 2.501→62.415 Å / SU ML: 0.23 / 交差検証法: FREE R-VALUE / σ(F): 1.36 / 位相誤差: 26.5 詳細: Data were found to be anisotropic, 2.5A in a and c directions; 3.5A in b. Data were subjected to staraniso (global phasing; ian tickle et al) after processing and it is this file the model ...詳細: Data were found to be anisotropic, 2.5A in a and c directions; 3.5A in b. Data were subjected to staraniso (global phasing; ian tickle et al) after processing and it is this file the model was refined against (and is uploaded). The model was refined using phenix and coot.