6PPD
Kaposi's sarcoma-associated herpesvirus (KSHV), C1 penton vertex register, CATC-absent structure
6PPD の概要
| エントリーDOI | 10.2210/pdb6ppd/pdb |
| 関連するPDBエントリー | 6PPB |
| EMDBエントリー | 20430 20431 20432 20433 |
| 分子名称 | Small capsomere-interacting protein, Major capsid protein, Triplex capsid protein 1, ... (4 entities in total) |
| 機能のキーワード | capsid, tegument, vertex, complex, virus, viral protein |
| 由来する生物種 | Human herpesvirus 8 (HHV-8) 詳細 |
| タンパク質・核酸の鎖数 | 16 |
| 化学式量合計 | 1070723.63 |
| 構造登録者 | |
| 主引用文献 | Gong, D.,Dai, X.,Jih, J.,Liu, Y.T.,Bi, G.Q.,Sun, R.,Zhou, Z.H. DNA-Packing Portal and Capsid-Associated Tegument Complexes in the Tumor Herpesvirus KSHV. Cell, 178:1329-1343.e12, 2019 Cited by PubMed Abstract: Assembly of Kaposi's sarcoma-associated herpesvirus (KSHV) begins at a bacteriophage-like portal complex that nucleates formation of an icosahedral capsid with capsid-associated tegument complexes (CATCs) and facilitates translocation of an ∼150-kb dsDNA genome, followed by acquisition of a pleomorphic tegument and envelope. Because of deviation from icosahedral symmetry, KSHV portal and tegument structures have largely been obscured in previous studies. Using symmetry-relaxed cryo-EM, we determined the in situ structure of the KSHV portal and its interactions with surrounding capsid proteins, CATCs, and the terminal end of KSHV's dsDNA genome. Our atomic models of the portal and capsid/CATC, together with visualization of CATCs' variable occupancy and alternate orientation of CATC-interacting vertex triplexes, suggest a mechanism whereby the portal orchestrates procapsid formation and asymmetric long-range determination of CATC attachment during DNA packaging prior to pleomorphic tegumentation/envelopment. Structure-based mutageneses confirm that a triplex deep binding groove for CATCs is a hotspot that holds promise for antiviral development. PubMed: 31447177DOI: 10.1016/j.cell.2019.07.035 主引用文献が同じPDBエントリー |
| 実験手法 | ELECTRON MICROSCOPY (3.7 Å) |
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