ジャーナル: Nat Chem / 年: 2012 タイトル: Metal-directed, chemically tunable assembly of one-, two- and three-dimensional crystalline protein arrays. 著者: Jeffrey D Brodin / X I Ambroggio / Chunyan Tang / Kristin N Parent / Timothy S Baker / F Akif Tezcan / 要旨: Proteins represent the most sophisticated building blocks available to an organism and to the laboratory chemist. Yet, in contrast to nearly all other types of molecular building blocks, the designed ...Proteins represent the most sophisticated building blocks available to an organism and to the laboratory chemist. Yet, in contrast to nearly all other types of molecular building blocks, the designed self-assembly of proteins has largely been inaccessible because of the chemical and structural heterogeneity of protein surfaces. To circumvent the challenge of programming extensive non-covalent interactions to control protein self-assembly, we have previously exploited the directionality and strength of metal coordination interactions to guide the formation of closed, homoligomeric protein assemblies. Here, we extend this strategy to the generation of periodic protein arrays. We show that a monomeric protein with properly oriented coordination motifs on its surface can arrange, on metal binding, into one-dimensional nanotubes and two- or three-dimensional crystalline arrays with dimensions that collectively span nearly the entire nano- and micrometre scale. The assembly of these arrays is tuned predictably by external stimuli, such as metal concentration and pH.
解像度: 2→2.11 Å / 冗長度: 3.6 % / Rmerge(I) obs: 0.349 / Mean I/σ(I) obs: 3.4 / Num. unique all: 4949 / Rsym value: 0.349 / % possible all: 99.8
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位相決定
位相決定
手法: 分子置換
Phasing MR
最高解像度
最低解像度
Rotation
3 Å
63.28 Å
Translation
3 Å
63.28 Å
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解析
ソフトウェア
名称
バージョン
分類
NB
MOLREP
位相決定
REFMAC
精密化
PDB_EXTRACT
3.1
データ抽出
Blu-Ice
データ収集
MOSFLM
データ削減
SCALA
データスケーリング
精密化
構造決定の手法: 分子置換 / 解像度: 2→63.28 Å / Cor.coef. Fo:Fc: 0.951 / Cor.coef. Fo:Fc free: 0.919 / WRfactor Rfree: 0.2406 / WRfactor Rwork: 0.1871 / Occupancy max: 1 / Occupancy min: 1 / FOM work R set: 0.8459 / SU B: 7.602 / SU ML: 0.116 / SU R Cruickshank DPI: 0.1876 / SU Rfree: 0.1748 / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R Free: 0.175 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS U VALUES : WITH TLS ADDED
Rfactor
反射数
%反射
Selection details
Rfree
0.2453
2442
7.2 %
RANDOM
Rwork
0.19
-
-
-
obs
0.1939
34022
98.71 %
-
all
-
34407
-
-
溶媒の処理
イオンプローブ半径: 0.8 Å / 減衰半径: 0.8 Å / VDWプローブ半径: 1.4 Å / 溶媒モデル: BABINET MODEL WITH MASK