ジャーナル: Cell Host Microbe / 年: 2025 タイトル: Sequential membrane- and protein-bound organelles compartmentalize genomes during phage infection. 著者: Emily G Armbruster / Phoolwanti Rani / Jina Lee / Niklas Klusch / Joshua Hutchings / Lizbeth Y Hoffman / Hannah Buschkaemper / Eray Enustun / Benjamin A Adler / Koe Inlow / Arica R VanderWal ...著者: Emily G Armbruster / Phoolwanti Rani / Jina Lee / Niklas Klusch / Joshua Hutchings / Lizbeth Y Hoffman / Hannah Buschkaemper / Eray Enustun / Benjamin A Adler / Koe Inlow / Arica R VanderWal / Madelynn Y Hoffman / Daksh Daksh / Ann Aindow / Amar Deep / Zaida K Rodriguez / Chase J Morgan / Majid Ghassemian / Thomas G Laughlin / Emeric Charles / Brady F Cress / David F Savage / Jennifer A Doudna / Kit Pogliano / Kevin D Corbett / Elizabeth Villa / Joe Pogliano / 要旨: Many eukaryotic viruses require membrane-bound compartments for replication, but no such organelles are known to be formed by prokaryotic viruses. Bacteriophages of the Chimalliviridae family ...Many eukaryotic viruses require membrane-bound compartments for replication, but no such organelles are known to be formed by prokaryotic viruses. Bacteriophages of the Chimalliviridae family sequester their genomes within a phage-generated organelle, the phage nucleus, which is enclosed by a lattice of the viral protein ChmA. We show that inhibiting phage nucleus formation arrests infections at an early stage in which the injected phage genome is enclosed within a membrane-bound early phage infection (EPI) vesicle. Early phage genes are expressed from the EPI vesicle, demonstrating its functionality as a prokaryotic, transcriptionally active, membrane-bound organelle. We also show that the phage nucleus is essential, with genome replication beginning after the injected DNA is transferred from the EPI vesicle to the phage nucleus. Our results show that Chimalliviridae require two sophisticated subcellular compartments of distinct compositions and functions that facilitate successive stages of the viral life cycle.
集束イオンビーム - 装置: OTHER / 集束イオンビーム - イオン: OTHER / 集束イオンビーム - 電圧: 30 / 集束イオンビーム - 電流: 0.03 / 集束イオンビーム - 時間: 600 / 集束イオンビーム - 温度: 78 K / 集束イオンビーム - Initial thickness: 300 / 集束イオンビーム - 最終 厚さ: 200 集束イオンビーム - 詳細: The value given for _em_focused_ion_beam.instrument is Aquilos 2 dual beam microscope. This is not in a list of allowed values {'OTHER', 'DB235'} so OTHER is written into the XML file.
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電子顕微鏡法
顕微鏡
TFS KRIOS
特殊光学系
エネルギーフィルター - スリット幅: 15 eV
撮影
フィルム・検出器のモデル: GATAN K3 (6k x 4k) / 平均電子線量: 4.1 e/Å2