- EMDB-34152: Structure of LexA in complex with RecA filament -
+
データを開く
IDまたはキーワード:
読み込み中...
-
基本情報
登録情報
データベース: EMDB / ID: EMD-34152
タイトル
Structure of LexA in complex with RecA filament
マップデータ
試料
複合体: RecA-LexA complex
複合体: RecA-LexA
タンパク質・ペプチド: LexA repressor
タンパク質・ペプチド: Protein RecA
複合体: DNA
DNA: DNA (5'-D(P*TP*TP*TP*TP*TP*T)-3')
リガンド: MAGNESIUM ION
リガンド: PHOSPHOTHIOPHOSPHORIC ACID-ADENYLATE ESTER
キーワード
SOS response / Filament / DNA repair / Helical reconstruction / DNA BINDING PROTEIN-DNA COMPLEX
機能・相同性
機能・相同性情報
repressor LexA / SOS response / ATP-dependent DNA damage sensor activity / single-stranded DNA binding / DNA recombination / damaged DNA binding / DNA replication / serine-type endopeptidase activity / DNA repair / negative regulation of DNA-templated transcription ...repressor LexA / SOS response / ATP-dependent DNA damage sensor activity / single-stranded DNA binding / DNA recombination / damaged DNA binding / DNA replication / serine-type endopeptidase activity / DNA repair / negative regulation of DNA-templated transcription / ATP hydrolysis activity / proteolysis / DNA binding / ATP binding / cytosol 類似検索 - 分子機能
LexA repressor, DNA-binding domain / Transcription regulator LexA / LexA DNA binding domain / Peptidase S24, LexA-like / LexA-like / Peptidase S24/S26A/S26B/S26C / Peptidase S24-like / LexA/Signal peptidase-like superfamily / DNA recombination/repair protein RecA, conserved site / DNA recombination and repair protein RecA, C-terminal ...LexA repressor, DNA-binding domain / Transcription regulator LexA / LexA DNA binding domain / Peptidase S24, LexA-like / LexA-like / Peptidase S24/S26A/S26B/S26C / Peptidase S24-like / LexA/Signal peptidase-like superfamily / DNA recombination/repair protein RecA, conserved site / DNA recombination and repair protein RecA, C-terminal / : / RecA C-terminal domain / recA signature. / DNA recombination and repair protein RecA / : / recA bacterial DNA recombination protein / 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. / Winged helix DNA-binding domain superfamily / Winged helix-like DNA-binding domain superfamily / 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
National Natural Science Foundation of China (NSFC)
31970040
中国
引用
ジャーナル: Proc Natl Acad Sci U S A / 年: 2023 タイトル: Structural basis for regulation of SOS response in bacteria. 著者: Bo Gao / Liang Liang / Lu Su / Aijia Wen / Chun Zhou / Yu Feng / 要旨: In response to DNA damage, bacterial RecA protein forms filaments with the assistance of DinI protein. The RecA filaments stimulate the autocleavage of LexA, the repressor of more than 50 SOS genes, ...In response to DNA damage, bacterial RecA protein forms filaments with the assistance of DinI protein. The RecA filaments stimulate the autocleavage of LexA, the repressor of more than 50 SOS genes, and activate the SOS response. During the late phase of SOS response, the RecA filaments stimulate the autocleavage of UmuD and λ repressor CI, leading to mutagenic repair and lytic cycle, respectively. Here, we determined the cryo-electron microscopy structures of RecA filaments in complex with DinI, LexA, UmuD, and λCI by helical reconstruction. The structures reveal that LexA and UmuD dimers bind in the filament groove and cleave in an intramolecular and an intermolecular manner, respectively, while λCI binds deeply in the filament groove as a monomer. Despite their distinct folds and oligomeric states, all RecA filament binders recognize the same conserved protein features in the filament groove. The SOS response in bacteria can lead to mutagenesis and antimicrobial resistance, and our study paves the way for rational drug design targeting the bacterial SOS response.