- EMDB-51613: Giant Jyvaskylavirus at 6.3 Ang resolution -
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基本情報
登録情報
データベース: EMDB / ID: EMD-51613
タイトル
Giant Jyvaskylavirus at 6.3 Ang resolution
マップデータ
IMPORTANT: Map has been binned from the original boxel size (1.34 A/px). Post-processed map, no masked, using the automatic B-factor sharpening by RELION.
Spanish Ministry of Science, Innovation, and Universities
PID2021-126130OB-I00
スペイン
Academy of Finland
grant #314939
フィンランド
Research Council of Norway
project ID #2520855
ノルウェー
Wellcome Trust
eBIC access proposal CM30316
英国
Spanish Ministry of Science, Innovation, and Universities
access RES BCV-2022-3-0015
スペイン
Spanish Ministry of Science, Innovation, and Universities
CEX2021-001136-S
スペイン
引用
ジャーナル: Elife / 年: 2025 タイトル: Genomic and structural insights into Jyvaskylavirus, the first giant virus isolated from Finland. 著者: Gabriel Magno de Freitas Almeida / Iker Arriaga / Bruna Luiza de Azevedo / Miika Leppänen / Jonatas S Abrahão / Julien Andreani / Davide Zabeo / Janne J Ravantti / Nicola G A Abrescia / ...著者: Gabriel Magno de Freitas Almeida / Iker Arriaga / Bruna Luiza de Azevedo / Miika Leppänen / Jonatas S Abrahão / Julien Andreani / Davide Zabeo / Janne J Ravantti / Nicola G A Abrescia / Lotta-Riina Sundberg / 要旨: Giant viruses of protists are a diverse and likely ubiquitous group of organisms. Here, we describe Jyvaskylavirus, the first giant virus isolated from Finland. This clade B marseillevirus was found ...Giant viruses of protists are a diverse and likely ubiquitous group of organisms. Here, we describe Jyvaskylavirus, the first giant virus isolated from Finland. This clade B marseillevirus was found in from a composting soil sample in Jyväskylä, Central Finland. Its genome shares similarities with other marseilleviruses. Helium ion microscopy and electron microscopy of infected cells unraveled stages of the Jyvaskylavirus life cycle. We reconstructed the Jyvaskylavirus particle to 6.3 Å resolution using cryo-electron microscopy. The ~2500 Å diameter virion displays structural similarities to other Marseilleviridae giant viruses. The capsid comprises of 9240 copies of the major capsid protein, encoded by open reading frame (ORF) 184, which possesses a double jellyroll fold arranged in trimers forming pseudo-hexameric capsomers. Below the capsid shell, the internal membrane vesicle encloses the genome. Through cross-structural and -sequence comparisons with other Marseilleviridae using AI-based software in model building and prediction, we elucidated ORF142 as the penton protein, which plugs the 12 vertices of the capsid. Five additional ORFs were identified, with models predicted and fitted into densities that either cap the capsomers externally or stabilize them internally. The isolation of Jyvaskylavirus suggests that these viruses may be widespread in the boreal environment and provide structural insights extendable to other marseilleviruses.
ダウンロード / ファイル: emd_51613.map.gz / 形式: CCP4 / 大きさ: 5.7 GB / タイプ: IMAGE STORED AS FLOATING POINT NUMBER (4 BYTES)
注釈
IMPORTANT: Map has been binned from the original boxel size (1.34 A/px). Post-processed map, no masked, using the automatic B-factor sharpening by RELION.
凍結剤: ETHANE / チャンバー内湿度: 95 % / チャンバー内温度: 277.15 K / 装置: FEI VITROBOT MARK IV 詳細: Also Automatic Plunge Freezer EM2 (Leica) was used (see publication)..
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電子顕微鏡法
顕微鏡
TFS KRIOS
撮影
フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 平均電子線量: 45.0 e/Å2
想定した対称性 - 点群: I (正20面体型対称) / 解像度のタイプ: BY AUTHOR / 解像度: 6.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / ソフトウェア - 名称: RELION / 使用した粒子像数: 3742
初期 角度割当
タイプ: PROJECTION MATCHING / ソフトウェア - 名称: RELION
最終 角度割当
タイプ: PROJECTION MATCHING
FSC曲線 (解像度の算出)
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原子モデル構築 1
初期モデル
Chain
詳細
source_name: AlphaFold, initial_model_type: in silico model
source_name: Other, initial_model_type: integrative model
ModelAngelo
source_name: Other, initial_model_type: integrative model
Please see publication
詳細
Please keep in mind that the predicted Jyvaskylavirus PDB models using ModelAngelo and Alphafold have been deposited at the Biostudies website (https://www.ebi.ac.uk/biostudies/). Please refer to the published article for the corresponding entry code.