8pua | pdb_00008pua

Structure of immature HTLV-1 CA-NTD from in vitro assembled MA126-CANC tubes: axis angle -05 degrees

spinqualitylabelsall models 8pua, resolution 3.70Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 8pua is a 3 chain structure with sequence from Human T-cell leukemia virus type I. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Electron Microscopy, Resolution 3.7Å Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function X5GX59_9DELA Publication Abstract from PubMed Human T-cell leukemia virus type 1 (HTLV-1) has an atypical immature particle morphology compared to other retroviruses. This indicates that these particles are formed in a way that is unique. Here we report the results of cryo-electron tomography (cryo-ET) studies of HTLV-1 virus-like particles (VLPs) assembled in vitro , as well as derived from cells. This work shows that HTLV-1 employs an unconventional mechanism of Gag-Gag interactions to form the immature viral lattice. Analysis of high-resolution structural information from immature CA tubular arrays reveals that the primary stabilizing component in HTLV-1 is CA-NTD. Mutagenesis and biophysical analysis support this observation. This distinguishes HTLV-1 from other retroviruses, in which the stabilization is provided primarily by the CA-CTD. These results are the first to provide structural details of the quaternary arrangement of Gag for an immature deltaretrovirus, and this helps explain why HTLV-1 particles are morphologically distinct. Unconventional stabilization of the human T-cell leukemia virus type 1 immature Gag lattice.,Obr M, Percipalle M, Chernikova D, Yang H, Thader A, Pinke G, Porley D, Mansky LM, Dick RA, Schur FK bioRxiv. 2023 Jul 24:2023.07.24.548988. doi: 10.1101/2023.07.24.548988. Preprint. PMID:37546793 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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