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8V6R

Crystal structure of EcThsA in complex with ADPR

8V6R の概要
エントリーDOI10.2210/pdb8v6r/pdb
分子名称Thoeris protein ThsA Macro domain-containing protein, [(2R,3S,4R,5R)-5-(6-AMINOPURIN-9-YL)-3,4-DIHYDROXY-OXOLAN-2-YL]METHYL [HYDROXY-[[(2R,3S,4R,5S)-3,4,5-TRIHYDROXYOXOLAN-2-YL]METHOXY]PHOSPHORYL] HYDROGEN PHOSPHATE (3 entities in total)
機能のキーワードantiphage immunity, nucleotide signalling, immune system
由来する生物種Escherichia coli
タンパク質・核酸の鎖数2
化学式量合計56733.63
構造登録者
Shi, Y.,Masic, V.,Mosaiab, T.,Goulart, C.C.,Hartley-Tassell, L.,Sorbello, M.,Vasquez, E.,Mishra, B.P.,Holt, S.,Gu, W.,Kobe, B.,Ve, T. (登録日: 2023-12-02, 公開日: 2024-06-12, 最終更新日: 2024-07-10)
主引用文献Shi, Y.,Masic, V.,Mosaiab, T.,Rajaratman, P.,Hartley-Tassell, L.,Sorbello, M.,Goulart, C.C.,Vasquez, E.,Mishra, B.P.,Holt, S.,Gu, W.,Kobe, B.,Ve, T.
Structural characterization of macro domain-containing Thoeris antiphage defense systems.
Sci Adv, 10:eadn3310-eadn3310, 2024
Cited by
PubMed Abstract: Thoeris defense systems protect bacteria from infection by phages via abortive infection. In these systems, ThsB proteins serve as sensors of infection and generate signaling nucleotides that activate ThsA effectors. Silent information regulator and SMF/DprA-LOG (SIR2-SLOG) containing ThsA effectors are activated by cyclic ADP-ribose (ADPR) isomers 2'cADPR and 3'cADPR, triggering abortive infection via nicotinamide adenine dinucleotide (NAD) depletion. Here, we characterize Thoeris systems with transmembrane and macro domain (TM-macro)-containing ThsA effectors. We demonstrate that ThsA macro domains bind ADPR and imidazole adenine dinucleotide (IAD), but not 2'cADPR or 3'cADPR. Combining crystallography, in silico predictions, and site-directed mutagenesis, we show that ThsA macro domains form nucleotide-induced higher-order oligomers, enabling TM domain clustering. We demonstrate that ThsB can produce both ADPR and IAD, and we identify a ThsA TM-macro-specific ThsB subfamily with an active site resembling deoxy-nucleotide and deoxy-nucleoside processing enzymes. Collectively, our study demonstrates that Thoeris systems with SIR2-SLOG and TM-macro ThsA effectors trigger abortive infection via distinct mechanisms.
PubMed: 38924412
DOI: 10.1126/sciadv.adn3310
主引用文献が同じPDBエントリー
実験手法
X-RAY DIFFRACTION (2.14 Å)
構造検証レポート
Validation report summary of 8v6r
検証レポート(詳細版)ダウンロードをダウンロード

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件を2025-04-02に公開中

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