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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: 6ytc | ||||||
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タイトル | Solution NMR structure of the isolated NTE domain of BT1762-63 levan transporter | ||||||
![]() | TonB-dependent receptor | ||||||
![]() | PROTEIN TRANSPORT / Glycan import / Transporter / N-terminal Domain / Ig-like fold | ||||||
機能・相同性 | ![]() | ||||||
生物種 | ![]() | ||||||
手法 | 溶液NMR / simulated annealing | ||||||
![]() | Rath, P. / Mazur, A. / Hiller, S. | ||||||
![]() | ![]() タイトル: Insights into SusCD-mediated glycan import by a prominent gut symbiont. 著者: Declan A Gray / Joshua B R White / Abraham O Oluwole / Parthasarathi Rath / Amy J Glenwright / Adam Mazur / Michael Zahn / Arnaud Baslé / Carl Morland / Sasha L Evans / Alan Cartmell / Carol ...著者: Declan A Gray / Joshua B R White / Abraham O Oluwole / Parthasarathi Rath / Amy J Glenwright / Adam Mazur / Michael Zahn / Arnaud Baslé / Carl Morland / Sasha L Evans / Alan Cartmell / Carol V Robinson / Sebastian Hiller / Neil A Ranson / David N Bolam / Bert van den Berg / ![]() ![]() 要旨: In Bacteroidetes, one of the dominant phyla of the mammalian gut, active uptake of large nutrients across the outer membrane is mediated by SusCD protein complexes via a "pedal bin" transport ...In Bacteroidetes, one of the dominant phyla of the mammalian gut, active uptake of large nutrients across the outer membrane is mediated by SusCD protein complexes via a "pedal bin" transport mechanism. However, many features of SusCD function in glycan uptake remain unclear, including ligand binding, the role of the SusD lid and the size limit for substrate transport. Here we characterise the β2,6 fructo-oligosaccharide (FOS) importing SusCD from Bacteroides thetaiotaomicron (Bt1762-Bt1763) to shed light on SusCD function. Co-crystal structures reveal residues involved in glycan recognition and suggest that the large binding cavity can accommodate several substrate molecules, each up to ~2.5 kDa in size, a finding supported by native mass spectrometry and isothermal titration calorimetry. Mutational studies in vivo provide functional insights into the key structural features of the SusCD apparatus and cryo-EM of the intact dimeric SusCD complex reveals several distinct states of the transporter, directly visualising the dynamics of the pedal bin transport mechanism. | ||||||
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構造の表示
構造ビューア | 分子: ![]() ![]() |
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PDBx/mmCIF形式 | ![]() | 623.8 KB | 表示 | ![]() |
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-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 | ![]() 6z8iC ![]() 6z9aC ![]() 6zazC ![]() 6zltC ![]() 6zluC ![]() 6zm1C C: 同じ文献を引用 ( |
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その他のデータベース |
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リンク
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集合体
登録構造単位 | ![]()
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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: 9947.120 Da / 分子数: 1 / 由来タイプ: 組換発現 由来: (組換発現) ![]() 遺伝子: HMPREF2534_01945 / 発現宿主: ![]() ![]() |
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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
詳細 | タイプ: solution 内容: 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter, 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter_2, 1 mM U-15N, 13C-NTE Isolated NTE domain of ...内容: 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter, 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter_2, 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter_3, 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter_4, 1 mM U-15N, 13C-NTE Isolated NTE domain of BT1762-63 levan transporter_5, 95% H2O/5% D2O 詳細: NMR Buffer:20 mM sodium phosphate, 150 mM NaCl and pH 7.5. Label: U-15N, 13C-NTE / 溶媒系: 95% H2O/5% D2O | ||||||||||||||||||||||||
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試料 |
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試料状態 | イオン強度: 150 mM / Label: NTE_1 / pH: 7.5 / 圧: 1 atm / 温度: 293 K |
-NMR測定
NMRスペクトロメーター |
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解析
NMR software |
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精密化 | 手法: simulated annealing / ソフトェア番号: 1 | |||||||||||||||
代表構造 | 選択基準: lowest energy | |||||||||||||||
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: 100 / 登録したコンフォーマーの数: 20 |