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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: 8e1e | ||||||
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タイトル | Scaffolding protein functional sites using deep learning | ||||||
![]() | SG122_C3 | ||||||
![]() | DE NOVO PROTEIN / DE NOVO DESIGN / Scaffolding protein / ligand binding / pocket | ||||||
生物種 | synthetic construct (人工物) | ||||||
手法 | ![]() ![]() ![]() | ||||||
![]() | Bera, A.K. / Gerben, S. / Baker, D. | ||||||
資金援助 | ![]()
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![]() | ![]() タイトル: Design of Diverse Asymmetric Pockets in Homo-oligomeric Proteins. 著者: Stacey R Gerben / Andrew J Borst / Derrick R Hicks / Isabelle Moczygemba / David Feldman / Brian Coventry / Wei Yang / Asim K Bera / Marcos Miranda / Alex Kang / Hannah Nguyen / David Baker / ![]() 要旨: A challenge for design of protein-small-molecule recognition is that incorporation of cavities with size, shape, and composition suitable for specific recognition can considerably destabilize protein ...A challenge for design of protein-small-molecule recognition is that incorporation of cavities with size, shape, and composition suitable for specific recognition can considerably destabilize protein monomers. This challenge can be overcome through binding pockets formed at homo-oligomeric interfaces between folded monomers. Interfaces surrounding the central homo-oligomer symmetry axes necessarily have the same symmetry and so may not be well suited to binding asymmetric molecules. To enable general recognition of arbitrary asymmetric substrates and small molecules, we developed an approach to designing asymmetric interfaces at off-axis sites on homo-oligomers, analogous to those found in native homo-oligomeric proteins such as glutamine synthetase. We symmetrically dock curved helical repeat proteins such that they form pockets at the asymmetric interface of the oligomer with sizes ranging from several angstroms, appropriate for binding a single ion, to up to more than 20 Å across. Of the 133 proteins tested, 84 had soluble expression in , 47 had correct oligomeric states in solution, 35 had small-angle X-ray scattering (SAXS) data largely consistent with design models, and 8 had negative-stain electron microscopy (nsEM) 2D class averages showing the structures coming together as designed. Both an X-ray crystal structure and a cryogenic electron microscopy (cryoEM) structure are close to the computational design models. The nature of these proteins as homo-oligomers allows them to be readily built into higher-order structures such as nanocages, and the asymmetric pockets of these structures open rich possibilities for small-molecule binder design free from the constraints associated with monomer destabilization. | ||||||
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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 | ![]() | 175.3 KB | 表示 | ![]() |
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PDB形式 | ![]() | 113.4 KB | 表示 | ![]() |
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その他 | ![]() |
-検証レポート
文書・要旨 | ![]() | 455.6 KB | 表示 | ![]() |
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文書・詳細版 | ![]() | 471.2 KB | 表示 | |
XML形式データ | ![]() | 24.2 KB | 表示 | |
CIF形式データ | ![]() | 32.9 KB | 表示 | |
アーカイブディレクトリ | ![]() ![]() | HTTPS FTP |
-関連構造データ
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リンク
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集合体
登録構造単位 | ![]()
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単位格子 |
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非結晶学的対称性 (NCS) | NCSドメイン:
NCSドメイン領域:
NCS oper:
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要素
#1: タンパク質 | 分子量: 27825.336 Da / 分子数: 3 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() |
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-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: 6.4 Å3/Da / 溶媒含有率: 80.79 % |
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結晶化 | 温度: 293 K / 手法: 蒸気拡散法, ハンギングドロップ法 / 詳細: morphous c9 |
-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 EIGER2 S 16M / 検出器: PIXEL / 日付: 2021年3月18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: 0.97918 Å / 相対比: 1 |
反射 | 解像度: 4.26→117.05 Å / Num. obs: 28776 / % possible obs: 99.9 % / 冗長度: 40.9 % / Biso Wilson estimate: 281.65 Å2 / CC1/2: 1 / Rmerge(I) obs: 0.143 / Net I/σ(I): 22.1 |
反射 シェル | 解像度: 4.26→4.76 Å / Rmerge(I) obs: 4.145 / Mean I/σ(I) obs: 1.2 / Num. unique obs: 4200 / CC1/2: 0.507 |
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解析
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精密化 | 構造決定の手法: ![]() 開始モデル: Designed model 解像度: 4.27→95.57 Å / SU ML: 0.9466 / 交差検証法: FREE R-VALUE / σ(F): 0.37 / 位相誤差: 54.1727 立体化学のターゲット値: GeoStd + Monomer Library + CDL v1.2
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溶媒の処理 | 減衰半径: 0.9 Å / VDWプローブ半径: 1.1 Å / 溶媒モデル: FLAT BULK SOLVENT MODEL | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
原子変位パラメータ | Biso mean: 249.98 Å2 | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
精密化ステップ | サイクル: LAST / 解像度: 4.27→95.57 Å
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拘束条件 |
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Refine LS restraints NCS |
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LS精密化 シェル |
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