ジャーナル: Nature / 年: 2024 タイトル: Blueprinting extendable nanomaterials with standardized protein blocks. 著者: Timothy F Huddy / Yang Hsia / Ryan D Kibler / Jinwei Xu / Neville Bethel / Deepesh Nagarajan / Rachel Redler / Philip J Y Leung / Connor Weidle / Alexis Courbet / Erin C Yang / Asim K Bera / ...著者: Timothy F Huddy / Yang Hsia / Ryan D Kibler / Jinwei Xu / Neville Bethel / Deepesh Nagarajan / Rachel Redler / Philip J Y Leung / Connor Weidle / Alexis Courbet / Erin C Yang / Asim K Bera / Nicolas Coudray / S John Calise / Fatima A Davila-Hernandez / Hannah L Han / Kenneth D Carr / Zhe Li / Ryan McHugh / Gabriella Reggiano / Alex Kang / Banumathi Sankaran / Miles S Dickinson / Brian Coventry / T J Brunette / Yulai Liu / Justas Dauparas / Andrew J Borst / Damian Ekiert / Justin M Kollman / Gira Bhabha / David Baker / 要旨: A wooden house frame consists of many different lumber pieces, but because of the regularity of these building blocks, the structure can be designed using straightforward geometrical principles. The ...A wooden house frame consists of many different lumber pieces, but because of the regularity of these building blocks, the structure can be designed using straightforward geometrical principles. The design of multicomponent protein assemblies, in comparison, has been much more complex, largely owing to the irregular shapes of protein structures. Here we describe extendable linear, curved and angled protein building blocks, as well as inter-block interactions, that conform to specified geometric standards; assemblies designed using these blocks inherit their extendability and regular interaction surfaces, enabling them to be expanded or contracted by varying the number of modules, and reinforced with secondary struts. Using X-ray crystallography and electron microscopy, we validate nanomaterial designs ranging from simple polygonal and circular oligomers that can be concentrically nested, up to large polyhedral nanocages and unbounded straight 'train track' assemblies with reconfigurable sizes and geometries that can be readily blueprinted. Because of the complexity of protein structures and sequence-structure relationships, it has not previously been possible to build up large protein assemblies by deliberate placement of protein backbones onto a blank three-dimensional canvas; the simplicity and geometric regularity of our design platform now enables construction of protein nanomaterials according to 'back of an envelope' architectural blueprints.
A: O43_129_+4 component A B: O43_129_+4 component A C: O43_129_+4 component A D: O43_129_+4 component A E: O43_129_+4 component A F: O43_129_+4 component A G: O43_129_+4 component A H: O43_129_+4 component A I: O43_129_+4 component A J: O43_129_+4 component A K: O43_129_+4 component A L: O43_129_+4 component A M: O43_129_+4 component A N: O43_129_+4 component A O: O43_129_+4 component A P: O43_129_+4 component A Q: O43_129_+4 component A R: O43_129_+4 component A S: O43_129_+4 component A T: O43_129_+4 component A U: O43_129_+4 component A V: O43_129_+4 component A W: O43_129_+4 component A X: O43_129_+4 component A a: O43_129_+4 component B b: O43_129_+4 component B c: O43_129_+4 component B d: O43_129_+4 component B e: O43_129_+4 component B f: O43_129_+4 component B g: O43_129_+4 component B h: O43_129_+4 component B i: O43_129_+4 component B j: O43_129_+4 component B k: O43_129_+4 component B l: O43_129_+4 component B m: O43_129_+4 component B n: O43_129_+4 component B o: O43_129_+4 component B p: O43_129_+4 component B q: O43_129_+4 component B r: O43_129_+4 component B s: O43_129_+4 component B t: O43_129_+4 component B u: O43_129_+4 component B v: O43_129_+4 component B w: O43_129_+4 component B x: O43_129_+4 component B
名称: Computational Designed Nanocage O43_129_+4 / タイプ: COMPLEX 詳細: Chain A and chain B were expressed separately in E. coli. Complex was formed by mixing the lysis of chain A and chain B. Sample was purified through HIS-tag on chain A. Entity ID: all / 由来: RECOMBINANT
分子量
実験値: NO
由来(天然)
生物種: unidentified (未定義)
由来(組換発現)
生物種: Escherichia coli (大腸菌)
緩衝液
pH: 8 / 詳細: 300mM NaCl, 25mM Tris-HCL
緩衝液成分
ID
濃度
名称
式
Buffer-ID
1
300mM
SodiumChloride
NaCl
1
2
25mM
TRIS
trisHCl
1
試料
濃度: 0.8 mg/ml / 包埋: NO / シャドウイング: NO / 染色: NO / 凍結: YES
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
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: 52 e/Å2 / フィルム・検出器のモデル: GATAN K3 (6k x 4k)
-
解析
EMソフトウェア
ID
名称
バージョン
カテゴリ
1
cryoSPARC
4.4.0
粒子像選択
2
SerialEM
画像取得
4
cryoSPARC
4.4.0
CTF補正
7
UCSF ChimeraX
1.6.1
モデルフィッティング
9
cryoSPARC
4.4.0
初期オイラー角割当
10
cryoSPARC
4.4.0
最終オイラー角割当
11
cryoSPARC
4.4.0
分類
12
cryoSPARC
4.4.0
3次元再構成
13
PHENIX
dev-4761
モデル精密化
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: 23522
対称性
点対称性: O (正8面体型対称)
3次元再構成
解像度: 6.4 Å / 解像度の算出法: FSC 0.143 CUT-OFF / 粒子像の数: 16878 / アルゴリズム: FOURIER SPACE / クラス平均像の数: 1 / 対称性のタイプ: POINT
原子モデル構築
B value: 804.6 / プロトコル: OTHER / 空間: REAL / Target criteria: Cross-correlation coefficient 詳細: Computationally designed model was docked into experimentally derived volume map in ChimeraX. It was then relaxed using Namdinator. Then it was trimmed to polyA in PHENIX.