THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH ...THE CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY THE TARGET SEQUENCE.
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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: 2.38 Å3/Da / 溶媒含有率: 48.3 %
結晶化
温度: 277 K / pH: 8.36 詳細: 53.80% 2-methyl-2,4-pentanediol, 0.1M TRIS pH 8.36, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K
解像度: 1.8→29.699 Å / Num. obs: 138522 / % possible obs: 94.4 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 16.78 Å2
反射 シェル
解像度: 1.8→1.86 Å / Rmerge(I) obs: 0.371 / Mean I/σ(I) obs: 1.9 / % possible all: 95.3
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位相決定
位相決定
手法: 多波長異常分散
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解析
ソフトウェア
名称
バージョン
分類
NB
SOLVE
位相決定
REFMAC
5.5.0110
精密化
XSCALE
データスケーリング
PDB_EXTRACT
3.1
データ抽出
qfit
0.9
モデル構築
XDS
データ削減
精密化
構造決定の手法: 多波長異常分散 / 解像度: 1.8→29.7 Å / Cor.coef. Fo:Fc: 0.956 / Cor.coef. Fo:Fc free: 0.938 / Occupancy max: 1 / Occupancy min: 0.21 / SU B: 4.781 / SU ML: 0.079 / ESU R: 0.124 / ESU R Free: 0.116 立体化学のターゲット値: MAXIMUM LIKELIHOOD WITH PHASES 詳細: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE ...詳細: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN EXPRESSION. THE OCCUPANCY OF THE SE ATOMS IN THE MSE RESIDUES WAS REDUCED TO 0.75 FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 3. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 4. WATERS WERE EXCLUDED FROM AUTOMATIC TLS ASSIGNMENT. 5.ELECTRON DENSITY INDICATES THAT LYS 207 ON THE FOUR SUBUNITS IN THE ASYMMETRIC UNIT ARE COVALENTLY ATTACHED TO PYRIDOXAL-5'- PHOSPHATE; THERFORE THESE RESIDUES WERE MODELED AS 2-LYSINE (3- HYDROXY-2-METHYL-5-PHOSPHONOOXYMETHYL-PYRIDIN-4-YLMETHANE)(LLP). 6. 2-METHYL-2,4-PENTANEDIOL (MPD,MRD), CHLORIDE (CL), AND SODIUM IONS FROM THE CRYSTALLIZATION SOLUTION WERE MODELED INTO THE STRUCTURE. 7. THE PROGARM QFIT THAT AUTOMATICALLY IDENTIFIES AND MODELS DISCRETE HETEROGENEITY IN ELECTRON DENSITY MAPS WITH A A CONVEX OPTIMIZATION ALGORITHM WAS IMPLEMENTED DURING REFINEMENT TO MODEL ALTERNATE CONFORMATIONS.