1. THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS ...1. THE CONSTRUCT WAS EXPRESSED WITH AN N-TERMINAL PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH TEV PROTEASE LEAVING ONLY A GLYCINE (0) FOLLOWED BY THE TARGET SEQUENCE. 2. THE STRAIN CLONED (ATCC 19115 / 4b / Li 2) DIFFERS FROM THE STRAIN SEQUENCED IN THE DATABASE REFERENCE (serotype 4b strain F2365). DNA SEQUENCING OF THE CLONED CONSTRUCT SHOWS AN ISOLUCINE AT POSITION 121 INSTEAD OF A VALINE. THE ISOLUCINE AT POSITION 121 IS SUPPORTED BY THE ELECTRON DENSITY.
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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: 2.27 Å3/Da / 溶媒含有率: 45.92 % 解説: The crystal was larger than the beam. After collecting the 3-wavelength MAD data set, the crystal was translated to place a fresh part of the crystal in the beam before collecting the data used in refinement.
結晶化
温度: 277 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 6 詳細: 10.0% 2-propanol, 0.2M Ca(OAc)2, 0.1M MES pH 6.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K
タイプ: MARMOSAIC 325 mm CCD / 検出器: CCD / 日付: 2007年7月19日 詳細: Flat mirror (vertical focusing); single crystal Si(111) bent monochromator (ho rizontal focusing)
放射
モノクロメーター: single crystal Si(111) bent / プロトコル: MAD / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
ID
波長 (Å)
相対比
1
0.91837
1
2
0.97937
1
3
0.97908
1
Reflection twin
Crystal-ID
ID
Operator
Domain-ID
Fraction
1
1
H, K, L
1
0.738
1
1
-H, K, -L
2
0.262
反射
解像度: 1.7→27.671 Å / Num. obs: 34048 / % possible obs: 99 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 26.769 Å2 / Rmerge(I) obs: 0.042 / Net I/σ(I): 13.88
反射 シェル
Diffraction-ID: 1
解像度 (Å)
冗長度 (%)
Rmerge(I) obs
Mean I/σ(I) obs
Num. measured obs
Num. unique obs
% possible all
1.7-1.75
3.7
0.426
3.1
9160
2476
99.8
1.75-1.79
3.7
0.365
3.7
9182
2450
99.6
1.79-1.85
3.7
0.284
4.8
8975
2395
99.8
1.85-1.9
3.7
0.297
5.1
8649
2309
99.4
1.9-1.96
3.7
0.156
8.2
8269
2225
99.8
1.96-2.03
3.8
0.125
9.9
8122
2162
99.8
2.03-2.11
4.6
0.114
12.9
9624
2090
99.6
2.11-2.2
5.3
0.102
16.1
10783
2034
99.7
2.2-2.29
5.7
0.116
16.5
11037
1935
99.9
2.29-2.41
6.5
0.08
22.6
11938
1841
99.9
2.41-2.54
7.5
0.074
26.9
13286
1782
99.9
2.54-2.69
7.4
0.062
31.3
12237
1649
100
2.69-2.88
7.4
0.052
35.3
11698
1577
99.8
2.88-3.11
7.4
0.048
40.1
10738
1453
99.9
3.11-3.4
7.4
0.043
43.9
10091
1364
100
3.4-3.8
7.4
0.043
45.5
8987
1220
99.8
3.8-4.39
7.2
0.036
47.4
7612
1060
99.7
4.39-5.38
6.9
0.033
47.3
6422
925
99.9
5.38-7.61
7
0.037
47.3
5069
720
99.9
7.61-27.67
5.6
0.033
42.2
2116
380
95.1
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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
MolProbity
3beta29
モデル構築
PDB_EXTRACT
3.1
データ抽出
SHELX
位相決定
SHARP
位相決定
XSCALE
June12, 2007
データスケーリング
REFMAC
5.6.0116
精密化
XDS
データ削減
SHELXD
位相決定
精密化
構造決定の手法: 多波長異常分散 / 解像度: 1.71→27.671 Å / Cor.coef. Fo:Fc: 0.969 / Cor.coef. Fo:Fc free: 0.961 / Occupancy max: 1 / Occupancy min: 0.19 / SU B: 4.509 / SU ML: 0.068 / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R Free: 0.02 / 立体化学のターゲット値: MAXIMUM LIKELIHOOD 詳細: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 3. A MET-INHIBITION ...詳細: 1. HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2. ATOM RECORD CONTAINS SUM OF TLS AND RESIDUAL B FACTORS. ANISOU RECORD CONTAINS SUM OF TLS AND RESIDUAL U FACTORS. 3. 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. 4. SOLVENT MOLECULES WERE EXCLUDED FROM THE AUTOMATIC ASSIGNMENT OF THE TLS GROUPS. 5. THE DIFFRACTION DATA SHOW MEROHEDERAL TWINNING WITH TWIN LAW "-H, K, -L". THE REFINED TWIN FRACTION WAS 0.26. THE R-FREE TEST SET REFLECTIONS WERE CHOSEN AT RANDOM WITH THE TWIN LAW INCLUDED. 6. BOTH SODIUM AND CALCIUM ARE PRESENT IN THE CRYSTALLIZATION SOLUTION / PROTEIN BUFFER. CALCIUM WAS MODELED BASED ON A SLIGHTLY BETTER FIT TO THE DENSITY BUT THE SITE COULD BE MIXED NA AND CA. 7. THE RAMACHANDRAN OUTLIER A60 IS IN A LOOP WITH WEAK ELECTRON DENSITY.
Rfactor
反射数
%反射
Selection details
Rfree
0.196
1742
5.2 %
RANDOM + TWIN LAW
Rwork
0.1634
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-
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obs
0.1651
33655
99.59 %
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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: 1.2 Å / 溶媒モデル: MASK