6QBT

Structure of the HTLV-2 integrase catalytic core domain in complex with magnesium (trimeric form)

6QBT の概要

• エントリーDOI: 10.2210/pdb6qbt/pdb
• 分子名称: HTLV-2 integrase catalytic core domain, MAGNESIUM ION (3 entities in total)
• 機能のキーワード: retrovirus, deltaretrovirus, integration, strand-transfer, nucleotidyltransferase, transferase
• 由来する生物種: Human T-cell leukemia virus 2 (HTLV-2)
• タンパク質・核酸の鎖数: 1
• 化学式量合計: 19203.27

構造登録者

Barski, M.S.,Minnell, J.J.,Maertens, G.N. (登録日: 2018-12-21, 公開日: 2020-09-30, 最終更新日: 2024-11-20)

主引用文献

Barski, M.S.,Minnell, J.J.,Hodakova, Z.,Pye, V.E.,Nans, A.,Cherepanov, P.,Maertens, G.N.
Cryo-EM structure of the deltaretroviral intasome in complex with the PP2A regulatory subunit B56 gamma.
Nat Commun, 11:5043-5043, 2020

PubMed Abstract: 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.

PubMed: 33028863
DOI: 10.1038/s41467-020-18874-y

実験手法

X-RAY DIFFRACTION (2.29 Å)