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基本情報
登録情報 | データベース: PDB / ID: 9dze | |||||||||||||||
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タイトル | Computationally Designed Bifaceted Protein Nanomaterial pD5-14 | |||||||||||||||
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![]() | DE NOVO PROTEIN / nanomaterial / 4 component / bifaceted / penton | |||||||||||||||
生物種 | synthetic construct (人工物) | |||||||||||||||
手法 | 電子顕微鏡法 / 単粒子再構成法 / クライオ電子顕微鏡法 / 解像度: 4.3 Å | |||||||||||||||
![]() | Carr, K.D. / Borst, A.J. / Weidle, C. | |||||||||||||||
資金援助 | ![]() ![]()
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![]() | ![]() タイトル: Computational design of bifaceted protein nanomaterials. 著者: Sanela Rankovic / Kenneth D Carr / Justin Decarreau / Rebecca Skotheim / Ryan D Kibler / Sebastian Ols / Sangmin Lee / Jung-Ho Chun / Marti R Tooley / Justas Dauparas / Helen E Eisenach / ...著者: Sanela Rankovic / Kenneth D Carr / Justin Decarreau / Rebecca Skotheim / Ryan D Kibler / Sebastian Ols / Sangmin Lee / Jung-Ho Chun / Marti R Tooley / Justas Dauparas / Helen E Eisenach / Matthias Glögl / Connor Weidle / Andrew J Borst / David Baker / Neil P King / ![]() 要旨: Recent advances in computational methods have led to considerable progress in the design of self-assembling protein nanoparticles. However, nearly all nanoparticles designed to date exhibit strict ...Recent advances in computational methods have led to considerable progress in the design of self-assembling protein nanoparticles. However, nearly all nanoparticles designed to date exhibit strict point group symmetry, with each subunit occupying an identical, symmetrically related environment. This limits the structural diversity that can be achieved and precludes anisotropic functionalization. Here, we describe a general computational strategy for designing multi-component bifaceted protein nanomaterials with two distinctly addressable sides. The method centers on docking pseudosymmetric heterooligomeric building blocks in architectures with dihedral symmetry and designing an asymmetric protein-protein interface between them. We used this approach to obtain an initial 30-subunit assembly with pseudo-D5 symmetry, and then generated an additional 15 variants in which we controllably altered the size and morphology of the bifaceted nanoparticles by designing extensions to one of the subunits. Functionalization of the two distinct faces of the nanoparticles with protein minibinders enabled specific colocalization of two populations of polystyrene microparticles coated with target protein receptors. The ability to accurately design anisotropic protein nanomaterials with precisely tunable structures and functions could be broadly useful in applications that require colocalizing two or more distinct target moieties. | |||||||||||||||
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構造ビューア | 分子: ![]() ![]() |
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-検証レポート
文書・要旨 | ![]() | 1.2 MB | 表示 | ![]() |
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文書・詳細版 | ![]() | 1.2 MB | 表示 | |
XML形式データ | ![]() | 163.7 KB | 表示 | |
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-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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要素
#1: タンパク質 | 分子量: 35302.070 Da / 分子数: 10 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() #2: タンパク質 | 分子量: 34050.781 Da / 分子数: 10 / 由来タイプ: 組換発現 / 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() #3: タンパク質 | 分子量: 56306.781 Da / 分子数: 5 / 由来タイプ: 組換発現 詳細: mScarlet fused to the N-terminus of the C component of pD5-14 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() #4: タンパク質 | 分子量: 56573.711 Da / 分子数: 5 / 由来タイプ: 組換発現 詳細: mNeonGreen fused to the N-terminus of the D component of pD5-14 由来: (組換発現) synthetic construct (人工物) / 発現宿主: ![]() ![]() Has protein modification | N | |
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-実験情報
-実験
実験 | 手法: 電子顕微鏡法 |
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EM実験 | 試料の集合状態: PARTICLE / 3次元再構成法: 単粒子再構成法 |
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試料調製
構成要素 | 名称: Computationally Designed Bifaceted Protein Nanomaterial pD5-14 タイプ: COMPLEX 詳細: Chains were expressed separately in E. coli. Batches of A, B, and C components or A, B, and D components were mixed, subsequently lysed and centrifuged to yield 2 distinct species of cyclic ...詳細: Chains were expressed separately in E. coli. Batches of A, B, and C components or A, B, and D components were mixed, subsequently lysed and centrifuged to yield 2 distinct species of cyclic assemblies - (ABC)5 and (ABD)5. Following IMAC and SEC, (ABC)5 and (ABD)5 assemblies were mixed to form pseudo-D5 (ABC)5-(ABD)5 assembly pD5-14. Entity ID: all / 由来: RECOMBINANT |
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分子量 | 値: 1.256 MDa / 実験値: NO |
由来(天然) | 生物種: synthetic construct (人工物) |
由来(組換発現) | 生物種: ![]() ![]() |
緩衝液 | pH: 8 |
試料 | 濃度: 1.5 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES |
試料支持 | グリッドの材料: COPPER / グリッドのサイズ: 400 divisions/in. / グリッドのタイプ: EMS Lacey Carbon |
急速凍結 | 装置: FEI VITROBOT MARK IV / 凍結剤: ETHANE / 湿度: 100 % / 凍結前の試料温度: 295.15 K |
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電子顕微鏡撮影
実験機器 | ![]() モデル: Titan Krios / 画像提供: FEI Company |
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顕微鏡 | モデル: TFS KRIOS |
電子銃 | 電子線源: ![]() |
電子レンズ | モード: BRIGHT FIELD / 最大 デフォーカス(公称値): 1800 nm / 最小 デフォーカス(公称値): 800 nm / Cs: 2.7 mm |
撮影 | 電子線照射量: 45.21 e/Å2 フィルム・検出器のモデル: GATAN K3 BIOQUANTUM (6k x 4k) 実像数: 4871 |
電子光学装置 | エネルギーフィルター名称: GIF Bioquantum |
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解析
EMソフトウェア |
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CTF補正 | タイプ: PHASE FLIPPING AND AMPLITUDE CORRECTION | ||||||||||||||||||||||||||||||||||||||||||||
粒子像の選択 | 選択した粒子像数: 640897 | ||||||||||||||||||||||||||||||||||||||||||||
対称性 | 点対称性: C5 (5回回転対称) | ||||||||||||||||||||||||||||||||||||||||||||
3次元再構成 | 解像度: 4.3 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 209004 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 18 / 対称性のタイプ: POINT | ||||||||||||||||||||||||||||||||||||||||||||
原子モデル構築 | B value: 239.9 / プロトコル: OTHER / 空間: REAL / Target criteria: Cross-correlation coefficient 詳細: Initial fitting was performed in ChimeraX. Phenix, Namdinator, ISOLDE, and Coot were used for relaxation of the model to better fit the density. |