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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: 8hgx | ||||||
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タイトル | NMR solution structure of subunit epsilon of the Acinetobacter baumannii F-ATP synthase | ||||||
![]() | ATP synthase epsilon chain | ||||||
![]() | ELECTRON TRANSPORT / F-ATP synthase / subunit eosilon / bioenergetics / Acinetobacter / baumannii | ||||||
機能・相同性 | ![]() : / proton-transporting ATP synthase activity, rotational mechanism / hydrolase activity / ATP binding / plasma membrane 類似検索 - 分子機能 | ||||||
生物種 | ![]() | ||||||
手法 | 溶液NMR / simulated annealing | ||||||
![]() | Shin, J. / Grueber, G. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Atomic insights of an up and down conformation of the Acinetobacter baumannii F -ATPase subunit ε and deciphering the residues critical for ATP hydrolysis inhibition and ATP synthesis. 著者: Wuan-Geok Saw / Khoa Cong Minh Le / Joon Shin / Jes Hui Min Kwek / Chui Fann Wong / Priya Ragunathan / Tuck Choy Fong / Volker Müller / Gerhard Grüber / ![]() ![]() 要旨: The Acinetobacter baumannii F F -ATP synthase (α :β :γ:δ:ε:a:b :c ), which is essential for this strictly respiratory opportunistic human pathogen, is incapable of ATP-driven proton ...The Acinetobacter baumannii F F -ATP synthase (α :β :γ:δ:ε:a:b :c ), which is essential for this strictly respiratory opportunistic human pathogen, is incapable of ATP-driven proton translocation due to its latent ATPase activity. Here, we generated and purified the first recombinant A. baumannii F -ATPase (AbF -ATPase) composed of subunits α :β :γ:ε, showing latent ATP hydrolysis. A 3.0 Å cryo-electron microscopy structure visualizes the architecture and regulatory element of this enzyme, in which the C-terminal domain of subunit ε (Abε) is present in an extended position. An ε-free AbF -ɑβγ complex generated showed a 21.5-fold ATP hydrolysis increase, demonstrating that Abε is the major regulator of AbF -ATPase's latent ATP hydrolysis. The recombinant system enabled mutational studies of single amino acid substitutions within Abε or its interacting subunits β and γ, respectively, as well as C-terminal truncated mutants of Abε, providing a detailed picture of Abε's main element for the self-inhibition mechanism of ATP hydrolysis. Using a heterologous expression system, the importance of Abε's C-terminus in ATP synthesis of inverted membrane vesicles, including AbF F -ATP synthases, has been explored. In addition, we are presenting the first NMR solution structure of the compact form of Abε, revealing interaction of its N-terminal β-barrel and C-terminal ɑ-hairpin domain. A double mutant of Abε highlights critical residues for Abε's domain-domain formation which is important also for AbF -ATPase's stability. Abε does not bind MgATP, which is described to regulate the up and down movements in other bacterial counterparts. The data are compared to regulatory elements of F -ATPases in bacteria, chloroplasts, and mitochondria to prevent wasting of ATP. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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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 | ![]() 7yryC 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 ![]() |
その他のデータベース |
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集合体
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NMR アンサンブル |
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要素
#1: タンパク質 | 分子量: 15511.765 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: atpC, A7M90_08520, AB945B12_00682, Aba9201_12755, ABCAM1_0172, ABKPCSM17A_01727, ABR2091_0173, ABUW_3731, ACX61_17950, APC21_14385, APD31_00885, AUO97_06420, AYR68_18050, B7L45_18620, ...遺伝子: atpC, A7M90_08520, AB945B12_00682, Aba9201_12755, ABCAM1_0172, ABKPCSM17A_01727, ABR2091_0173, ABUW_3731, ACX61_17950, APC21_14385, APD31_00885, AUO97_06420, AYR68_18050, B7L45_18620, B9X95_01230, BAA1790NC_3496, BS065_18355, C2U32_15275, C6N18_19570, CBE85_14435, CBL15_17785, CSB70_3895, CTZ19_18500, D8O08_000335, DLI71_10775, DLI72_06180, DOL94_02920, DVA69_09710, E1A86_02075, E1A87_05110, E2532_15790, E2533_14640, E2534_11110, E2535_10530, E2536_13180, E2538_11270, E2539_11975, E2540_15325, E2541_09260, EA686_08570, EA706_05510, EA720_009765, EA722_10625, EGM95_19705, EKS29_01635, EWO96_15825, F2P40_12650, F4T85_15175, FDN00_02385, FE003_18665, FJU36_14065, FJU42_13255, FJU76_16610, FR761_02125, G3N53_14500, GNY86_14290, GSE42_00725, H0529_15450, H1058_00785, HB367_12610, HBK86_18985, HIN86_18905, IMO23_00750, NCTC13305_02274, NCTC13421_03737, SAMEA104305318_03328, SAMEA104305340_02247, SAMEA104305385_03000, SI89_14475 発現宿主: ![]() ![]() 参照: UniProt: V5VHG0 |
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-実験情報
-実験
実験 | 手法: 溶液NMR | ||||||||||||||||||||||||||||||||||||||||||||||||||||||
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NMR実験 |
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試料調製
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試料状態 |
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-NMR測定
NMRスペクトロメーター | タイプ: Bruker AVANCE / 製造業者: Bruker / モデル: AVANCE / 磁場強度: 700 MHz |
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解析
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精密化 | 手法: simulated annealing / ソフトェア番号: 8 | |||||||||||||||||||||
代表構造 | 選択基準: minimized average structure | |||||||||||||||||||||
NMRアンサンブル | コンフォーマー選択の基準: structures with the lowest energy 計算したコンフォーマーの数: 200 / 登録したコンフォーマーの数: 21 |