National Institutes of Health/National Institute Of Allergy and Infectious Diseases (NIH/NIAID)
GM082251
米国
The Francis Crick Institute
FC001061
英国
Wellcome Trust
206175/Z/17/Z
英国
引用
ジャーナル: Nat Commun / 年: 2021 タイトル: Structural basis for the inhibition of HTLV-1 integration inferred from cryo-EM deltaretroviral intasome structures. 著者: Michal S Barski / Teresa Vanzo / Xue Zhi Zhao / Steven J Smith / Allison Ballandras-Colas / Nora B Cronin / Valerie E Pye / Stephen H Hughes / Terrence R Burke / Peter Cherepanov / Goedele N Maertens / 要旨: Between 10 and 20 million people worldwide are infected with the human T-cell lymphotropic virus type 1 (HTLV-1). Despite causing life-threatening pathologies there is no therapeutic regimen for this ...Between 10 and 20 million people worldwide are infected with the human T-cell lymphotropic virus type 1 (HTLV-1). Despite causing life-threatening pathologies there is no therapeutic regimen for this deltaretrovirus. Here, we screened a library of integrase strand transfer inhibitor (INSTI) candidates built around several chemical scaffolds to determine their effectiveness in limiting HTLV-1 infection. Naphthyridines with substituents in position 6 emerged as the most potent compounds against HTLV-1, with XZ450 having highest efficacy in vitro. Using single-particle cryo-electron microscopy we visualised XZ450 as well as the clinical HIV-1 INSTIs raltegravir and bictegravir bound to the active site of the deltaretroviral intasome. The structures reveal subtle differences in the coordination environment of the Mg ion pair involved in the interaction with the INSTIs. Our results elucidate the binding of INSTIs to the HTLV-1 intasome and support their use for pre-exposure prophylaxis and possibly future treatment of HTLV-1 infection.
DNA: DNA (5'-D(*AP*CP*TP*GP*TP*GP*TP*TP*TP*GP*GP*CP*GP*CP*TP*TP*CP*TP*CP*TP*C)-3')
DNA: DNA (5'-D(*GP*AP*GP*AP*GP*AP*AP*GP*CP*GP*CP*CP*AP*AP*AP*CP*AP*CP*A)-3')
リガンド: ZINC ION
リガンド: MAGNESIUM ION
リガンド: Bictegravir
リガンド: water
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超分子 #1: Complex of STLV-1 MarB43 integrase with nascent viral DNA, the hu...
超分子
名称: Complex of STLV-1 MarB43 integrase with nascent viral DNA, the human PP2A B56 subunit and the drug inhibitor bictegravir タイプ: complex / ID: 1 / 親要素: 0 / 含まれる分子: #1-#4 詳細: Sample composition and source have been described in "macromolecules"
分子 #2: PC4 and SFRS1-interacting protein,Serine/threonine-protein phosph...
分子
名称: PC4 and SFRS1-interacting protein,Serine/threonine-protein phosphatase 2A 56 kDa regulatory subunit gamma isoform タイプ: protein_or_peptide / ID: 2 詳細: fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no ...詳細: fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below),fusion construct containing human LEDGF (residues 1-324 thus without the IBD domain) (gene PSIP1; O75475)) and human B56gammma (residues 11-380) regulatory subunit of PP2A (gene PPP2R5C) (no space for these details below) コピー数: 2 / 光学異性体: LEVO
モデル: UltrAuFoil R1.2/1.3 / 材質: GOLD / 前処理 - タイプ: GLOW DISCHARGE / 前処理 - 時間: 240 sec. 詳細: Glow-discharged for 4 min at 45 mA on an Emitech K100X instrument (Electron Microscopy Sciences) and covered with a layer of graphene oxide (Sigma-Aldrich, catalogue #763705) immediately before being used.
凍結
凍結剤: ETHANE / チャンバー内湿度: 95 % / チャンバー内温度: 295.15 K / 装置: FEI VITROBOT MARK IV
詳細
Complex was isolated by size exclusion chromatography
Chain - Source name: PDB / Chain - Initial model type: experimental model 詳細: 6Z2Y was fitted into the cryoEM map using Chimera. The model was adjusted to fit the map; metal ions and drug docked into the map manually using Coot. The final model was subjected to Phenix. ...詳細: 6Z2Y was fitted into the cryoEM map using Chimera. The model was adjusted to fit the map; metal ions and drug docked into the map manually using Coot. The final model was subjected to Phenix.real_space_refine using C2 NCS and secondary structure and metal ion coordination restraints.
精密化
空間: REAL / プロトコル: RIGID BODY FIT
得られたモデル
PDB-7ouh: Structure of the STLV intasome:B56 complex bound to the strand-transfer inhibitor bictegravir