- EMDB-49488: The Cryo-EM structure of the yeast Dmc1-ssDNA nucleoprotein filam... -
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基本情報
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データベース: EMDB / ID: EMD-49488
タイトル
The Cryo-EM structure of the yeast Dmc1-ssDNA nucleoprotein filament ADP bound state
マップデータ
tructure of the yeast Dmc1-ssDNA nucleoprotein filament ADP bound state
試料
複合体: Cryo-EM structure of yeast Dmc1 - ssDNA nucleoprotein filament ADP bound state
タンパク質・ペプチド: Meiotic recombination protein DMC1
リガンド: ADENOSINE-5'-DIPHOSPHATE
リガンド: MAGNESIUM ION
キーワード
DNA Repair / Homologous Recombination / DNA BINDING PROTEIN
機能・相同性
機能・相同性情報
meiotic joint molecule formation / DNA recombinase assembly / chromosome organization involved in meiotic cell cycle / synaptonemal complex assembly / DNA strand invasion / mitotic recombination / DNA strand exchange activity / ATPase inhibitor activity / reciprocal meiotic recombination / sporulation resulting in formation of a cellular spore ...meiotic joint molecule formation / DNA recombinase assembly / chromosome organization involved in meiotic cell cycle / synaptonemal complex assembly / DNA strand invasion / mitotic recombination / DNA strand exchange activity / ATPase inhibitor activity / reciprocal meiotic recombination / sporulation resulting in formation of a cellular spore / ATP-dependent DNA damage sensor activity / ATP-dependent activity, acting on DNA / condensed nuclear chromosome / meiotic cell cycle / single-stranded DNA binding / double-stranded DNA binding / ATP hydrolysis activity / ATP binding / nucleus 類似検索 - 分子機能
Meiotic recombination protein Dmc1 / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 / DNA recombination and repair protein RecA, monomer-monomer interface / RecA family profile 2. / DNA recombination and repair protein RecA-like, ATP-binding domain / RecA family profile 1. / DNA repair Rad51/transcription factor NusA, alpha-helical / Helix-hairpin-helix domain ...Meiotic recombination protein Dmc1 / DNA recombination and repair protein, RecA-like / DNA recombination and repair protein Rad51-like, C-terminal / Rad51 / DNA recombination and repair protein RecA, monomer-monomer interface / RecA family profile 2. / DNA recombination and repair protein RecA-like, ATP-binding domain / RecA family profile 1. / DNA repair Rad51/transcription factor NusA, alpha-helical / Helix-hairpin-helix domain / ATPases associated with a variety of cellular activities / AAA+ ATPase domain / P-loop containing nucleoside triphosphate hydrolase 類似検索 - ドメイン・相同性
ジャーナル: J Biol Chem / 年: 2025 タイトル: ATP hydrolysis-driven structural transitions within the Saccharomyces cerevisiae Rad51 and Dmc1 nucleoprotein filaments. 著者: Yeonoh Shin / Stefan Y Kim / Eric C Greene / 要旨: Homologous recombination (HR) is essential for the maintenance of genome stability and for generating genetic diversity during meiosis. The eukaryotic protein Rad51 is member of the Rad51/RecA family ...Homologous recombination (HR) is essential for the maintenance of genome stability and for generating genetic diversity during meiosis. The eukaryotic protein Rad51 is member of the Rad51/RecA family of DNA recombinases and is responsible for guiding the DNA pairing reactions that take place in HR during mitosis. Dmc1 is a meiosis-specific paralog of Rad51 and is responsible for the DNA pairing reactions that take place in HR during meiosis. Rad51 and Dmc1 are both ATP-dependent DNA-binding proteins and both form extended helical filaments on ssDNA, which are key intermediates in HR. The stability of these nucleoprotein filaments is highly regulated and is also tightly coupled to nucleotide binding and hydrolysis. ATP binding promotes filament assembly, whereas the hydrolysis of ATP to ADP reduces filament stability to promote filament disassembly. Here, we present cryo-EM structures of the Saccharomyces cerevisiae recombinases Rad51 and Dmc1 in the ADP-bound states and provide a detailed structural comparison to the ATP-bound filaments. Our findings yield insights into the structural transitions that take place during the hydrolysis of ATP to ADP and suggest a new model for how these structural changes may be linked to nucleoprotein filament disassembly.