ジャーナル: J.Mol.Biol. / 年: 1999 タイトル: The 1.8 A crystal structure of a statically disordered 17 base-pair RNA duplex: principles of RNA crystal packing and its effect on nucleic acid structure. 著者: Shah, S.A. / Brunger, A.T.
THE CRYSTAL IS MADE OF STATICALLY DISORDERED 17-BP RNA DUPLEX. ALL CONFIRMATIONS ARE REPRESENTED BY ...THE CRYSTAL IS MADE OF STATICALLY DISORDERED 17-BP RNA DUPLEX. ALL CONFIRMATIONS ARE REPRESENTED BY FOUR MODELS.
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実験情報
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実験
実験
手法: X線回折 / 使用した結晶の数: 1
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試料調製
結晶
マシュー密度: 3.71 Å3/Da / 溶媒含有率: 38 % 解説: The crystal packing of 17-bp RNA duplex is statically disordered. As a result, the asymmetric unit of the crystal contains four superimposed orientations of the duplex that are out of ...解説: The crystal packing of 17-bp RNA duplex is statically disordered. As a result, the asymmetric unit of the crystal contains four superimposed orientations of the duplex that are out of register, such that backbones superimpose, but base identity differs.
結晶化
温度: 293 K / 手法: 蒸気拡散法, ハンギングドロップ法 / pH: 4.5 詳細: pH 4.50, VAPOR DIFFUSION, HANGING DROP, temperature 293.00K
最高解像度: 1.8 Å / 最低解像度: 50 Å / % possible obs: 98.3 %
反射 シェル
*PLUS
最高解像度: 1.8 Å / 最低解像度: 1.85 Å / % possible obs: 94.7 % / Rmerge(I) obs: 0.317 / Mean I/σ(I) obs: 4.73
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解析
ソフトウェア
名称
バージョン
分類
CNS
0.3
精密化
DENZO
データ削減
SCALEPACK
データスケーリング
CNS
0.3
位相決定
精密化
解像度: 1.8→15 Å / Rfactor Rfree error: 0.008 / Data cutoff high absF: 382611.75 / Data cutoff low absF: 0 / Isotropic thermal model: GROUP / 交差検証法: THROUGHOUT / σ(F): 0 詳細: BULK SOLVENT MODEL USED. The structure of statically disordered 17-bp RNA duplex is represented by four models in the asymmetric unit, each model for a distinct conformation of the duplex. ...詳細: BULK SOLVENT MODEL USED. The structure of statically disordered 17-bp RNA duplex is represented by four models in the asymmetric unit, each model for a distinct conformation of the duplex. The sum of all models contribute to the observed diffraction data. To generate the contents of the entire asymmetric unit from the four disordered duplexes, a strict non-crystallographic hypersymmetry was applied.
Rfactor
反射数
%反射
Selection details
Rfree
0.294
1524
10.5 %
RANDOM
Rwork
0.262
-
-
-
obs
0.262
14484
97.7 %
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原子変位パラメータ
Biso mean: 12 Å2
Baniso -1
Baniso -2
Baniso -3
1-
-0.21 Å2
-0.53 Å2
0 Å2
2-
-
-0.21 Å2
0 Å2
3-
-
-
0.43 Å2
Refine analyze
Free
Obs
Luzzati coordinate error
0.31 Å
0.26 Å
Luzzati d res low
-
5 Å
Luzzati sigma a
0.16 Å
0.12 Å
精密化ステップ
サイクル: LAST / 解像度: 1.8→15 Å
タンパク質
核酸
リガンド
溶媒
全体
原子数
0
726
0
34
760
拘束条件
Refine-ID
タイプ
Dev ideal
X-RAY DIFFRACTION
c_bond_d
0.006
X-RAY DIFFRACTION
c_bond_d_na
X-RAY DIFFRACTION
c_bond_d_prot
X-RAY DIFFRACTION
c_angle_d
X-RAY DIFFRACTION
c_angle_d_na
X-RAY DIFFRACTION
c_angle_d_prot
X-RAY DIFFRACTION
c_angle_deg
1
X-RAY DIFFRACTION
c_angle_deg_na
X-RAY DIFFRACTION
c_angle_deg_prot
X-RAY DIFFRACTION
c_dihedral_angle_d
10.7
X-RAY DIFFRACTION
c_dihedral_angle_d_na
X-RAY DIFFRACTION
c_dihedral_angle_d_prot
X-RAY DIFFRACTION
c_improper_angle_d
1.42
X-RAY DIFFRACTION
c_improper_angle_d_na
X-RAY DIFFRACTION
c_improper_angle_d_prot
X-RAY DIFFRACTION
c_mcbond_it
X-RAY DIFFRACTION
c_mcangle_it
X-RAY DIFFRACTION
c_scbond_it
X-RAY DIFFRACTION
c_scangle_it
Refine LS restraints NCS
NCS model details: CONSTR
LS精密化 シェル
解像度: 1.8→1.91 Å / Rfactor Rfree error: 0.02 / Total num. of bins used: 6