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データを開く
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基本情報
登録情報 | データベース: PDB / ID: 7tec | ||||||
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タイトル | Structure of the Listeria monocytogenes GlnR-DNA complex to 3.45 Angstrom | ||||||
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![]() | DNA BINDING PROTEIN/DNA / GlnR / listeria / glutamine synthetase / repressor / transcription / glnRA / DNA BINDING PROTEIN / DNA BINDING PROTEIN-DNA complex | ||||||
機能・相同性 | ![]() | ||||||
生物種 | ![]() synthetic construct (人工物) | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | Schumacher, M.A. / Brennan, R.G. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Molecular dissection of the glutamine synthetase-GlnR nitrogen regulatory circuitry in Gram-positive bacteria. 著者: Brady A Travis / Jared V Peck / Raul Salinas / Brandon Dopkins / Nicholas Lent / Viet D Nguyen / Mario J Borgnia / Richard G Brennan / Maria A Schumacher / ![]() 要旨: How bacteria sense and respond to nitrogen levels are central questions in microbial physiology. In Gram-positive bacteria, nitrogen homeostasis is controlled by an operon encoding glutamine ...How bacteria sense and respond to nitrogen levels are central questions in microbial physiology. In Gram-positive bacteria, nitrogen homeostasis is controlled by an operon encoding glutamine synthetase (GS), a dodecameric machine that assimilates ammonium into glutamine, and the GlnR repressor. GlnR detects nitrogen excess indirectly by binding glutamine-feedback-inhibited-GS (FBI-GS), which activates its transcription-repression function. The molecular mechanisms behind this regulatory circuitry, however, are unknown. Here we describe biochemical and structural analyses of GS and FBI-GS-GlnR complexes from pathogenic and non-pathogenic Gram-positive bacteria. The structures show FBI-GS binds the GlnR C-terminal domain within its active-site cavity, juxtaposing two GlnR monomers to form a DNA-binding-competent GlnR dimer. The FBI-GS-GlnR interaction stabilizes the inactive GS conformation. Strikingly, this interaction also favors a remarkable dodecamer to tetradecamer transition in some GS, breaking the paradigm that all bacterial GS are dodecamers. These data thus unveil unique structural mechanisms of transcription and enzymatic regulation. | ||||||
履歴 |
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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ダウンロードとリンク
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ダウンロード
PDBx/mmCIF形式 | ![]() | 70.7 KB | 表示 | ![]() |
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PDB形式 | ![]() | 47.4 KB | 表示 | ![]() |
PDBx/mmJSON形式 | ![]() | ツリー表示 | ![]() | |
その他 | ![]() |
-検証レポート
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
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-関連構造データ
関連構造データ | ![]() 7tdpC ![]() 7tdvC ![]() 7teaSC ![]() 7tenC ![]() 7tf6C ![]() 7tf7C ![]() 7tf9C ![]() 7tfaC ![]() 7tfbC ![]() 7tfcC ![]() 7tfdC ![]() 7tfeC S: 精密化の開始モデル C: 同じ文献を引用 ( |
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類似構造データ | 類似検索 - 機能・相同性 ![]() |
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リンク
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集合体
登録構造単位 | ![]()
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1 | ![]()
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単位格子 |
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要素
#1: タンパク質 | 分子量: 14638.857 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: glnR, A8L61_07010, ABZ57_05085, AF006_07180, AF817_01990, AMC55_04605, APD94_02400, ART25_07755, ARV28_05490, ARV77_10415, B1N06_02425, B1N38_06025, B1N40_09865, B1N52_08095, B1N70_08585, ...遺伝子: glnR, A8L61_07010, ABZ57_05085, AF006_07180, AF817_01990, AMC55_04605, APD94_02400, ART25_07755, ARV28_05490, ARV77_10415, B1N06_02425, B1N38_06025, B1N40_09865, B1N52_08095, B1N70_08585, B1N71_01820, B1O10_02055, B1O25_08310, B2H14_10505, B4X79_13085, B4Y29_01290, B4Y40_11845, B4Y47_05380, B4Y49_02050, B4Y56_02055, B4Y57_02055, B5K54_13065, B6112_07615, B6O07_10740, BB997_08390, BCZ19_06080, BW273_06570, C6S26_02850, CW834_10150, CW845_07630, CW895_11495, CX098_14230, D4164_01995, D4271_02955, D4900_04675, D4920_02385, D4947_02360, D4C60_03330, D4D22_02955, D4D89_02780, D4U00_01965, D4U23_10015, D5M63_02050, D5N24_04355, D6P18_02820, D7104_08235, DCK28_08790, DCT16_08455, E0I39_02830, E1V33_00335, E1W43_05380, E1W56_05615, E3W32_09810, E5F58_10230, E5H26_02070, EPC87_01440, EX365_07695, EXZ73_06750, EYY39_05995, F3O35_05110, F3R75_05795, F6436_09515, F6515_11560, FA835_14895, FC284_14445, FJU19_02820, FL871_07620, FLQ97_14195, FLR03_05055, FLR11_13675, FNX31_12240, FNX40_10035, FORC68_1320, FR217_04555, FV747_02470, G3O21_002452, G3R95_000630, GEK29_02375, GFK29_08620, GH165_00575, GHH22_03975, GHM39_05980, GIG92_01790, GIH49_01260, GJW51_07325, GNG71_06855, GON91_01810, GT011_02015, GXB45_00580, GYN46_14485, GYO86_08555, GYP27_02015, GYS19_13395, GYU05_01010, GYU24_02035, GYX95_04495, GYY14_11060, GYZ23_12950, GYZ33_11570, GYZ61_07200, GZI09_15320, GZK40_07615, GZM52_07550, GZN68_09475, HP506_001182, HQN34_002361, I6I37_04555, I8J47_00192, IP987_001477, JKV73_01561, JKV74_07850, JKV76_01310, JKV77_01646, JKX60_08595, JKX61_06825, KV70_04590, KW30_04605, LmNIHS28_00654, M643_00970, QD52_08715, R019_12835, UI29_08755, UP23_04390 発現宿主: ![]() ![]() |
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#2: DNA鎖 | 分子量: 6447.185 Da / 分子数: 1 / 由来タイプ: 合成 / 由来: (合成) synthetic construct (人工物) |
-実験情報
-実験
実験 | 手法: ![]() |
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試料調製
結晶 | マシュー密度: 1.97 Å3/Da / 溶媒含有率: 37.54 % |
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結晶化 | 温度: 275 K / 手法: 蒸気拡散法, ハンギングドロップ法 詳細: 50 mM sodium cacodylate pH 6.5, 35% MPD, 10 mM MgCl2 |
-データ収集
回折 | 平均測定温度: 100 K / Serial crystal experiment: N |
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放射光源 | 由来: ![]() ![]() ![]() |
検出器 | タイプ: DECTRIS PILATUS 6M / 検出器: PIXEL / 日付: 2021年2月12日 |
放射 | プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray |
放射波長 | 波長: 1.09 Å / 相対比: 1 |
反射 | 解像度: 3.45→37.51 Å / Num. obs: 2384 / % possible obs: 96.8 % / 冗長度: 4.1 % / CC1/2: 0.998 / Rpim(I) all: 0.038 / Rsym value: 0.064 / Net I/σ(I): 8.9 |
反射 シェル | 解像度: 3.45→4.34 Å / Mean I/σ(I) obs: 2 / Num. unique obs: 237 / CC1/2: 0.71 / Rpim(I) all: 0.24 / Rsym value: 0.42 |
-位相決定
位相決定 | 手法: ![]() |
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解析
ソフトウェア |
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精密化 | 構造決定の手法: ![]() 開始モデル: 7TEA 解像度: 3.45→37.51 Å / SU ML: 0.34 / 交差検証法: THROUGHOUT / σ(F): 1.36 / 位相誤差: 23.48 / 立体化学のターゲット値: ML
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溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.11 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | ||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso max: 165.47 Å2 / Biso mean: 64.3464 Å2 / Biso min: 20 Å2 | ||||||||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: final / 解像度: 3.45→37.51 Å
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LS精密化 シェル | Refine-ID: X-RAY DIFFRACTION / Rfactor Rfree error: 0 / Total num. of bins used: 2 / % reflection obs: 97 %
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精密化 TLS | 手法: refined / Origin x: 2.038 Å / Origin y: 5.37 Å / Origin z: 23.3464 Å
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精密化 TLSグループ |
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