- PDB-3e38: CRYSTAL STRUCTURE OF A TWO-DOMAIN PROTEIN CONTAINING PREDICTED PH... -
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IDまたはキーワード:
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基本情報
登録情報
データベース: PDB / ID: 3.0E+38
タイトル
CRYSTAL STRUCTURE OF A TWO-DOMAIN PROTEIN CONTAINING PREDICTED PHP-LIKE METAL-DEPENDENT PHOSPHOESTERASE (BVU_3505) FROM BACTEROIDES VULGATUS ATCC 8482 AT 2.20 A RESOLUTION
要素
two-domain protein containing predicted PHP-like metal-dependent phosphoesterase
キーワード
HYDROLASE / Structural genomics / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI-2
機能・相同性
機能・相同性情報
5'-3' RNA exonuclease activity / 5'-3' DNA exonuclease activity / metal ion binding 類似検索 - 分子機能
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. THE CLONED CONSTRUCT CONTAINS RESIDUES 22-363 OF THE FULL LENGTH PROTEIN.
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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: 2.8 Å3/Da / 溶媒含有率: 56.1 %
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: 6.5 詳細: 20.0000% Glycerol, 0.1600M Mg(oAc)2, 16.0000% PEG-8000, 0.1M Cacodylate pH 6.5, VAPOR DIFFUSION,SITTING DROP,NANODROP, temperature 277K, VAPOR DIFFUSION, SITTING DROP
モノクロメーター: Single crystal Si(111) bent monochromator (horizontal focusing) プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray
放射波長
相対比: 1
反射
解像度: 2.2→29.604 Å / Num. obs: 45776 / % possible obs: 98.6 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 31.645 Å2 / Rmerge(I) obs: 0.106 / Net I/σ(I): 11.94
反射 シェル
解像度 (Å)
Rmerge(I) obs
Mean I/σ(I) obs
Num. measured obs
Num. unique obs
Diffraction-ID
% possible all
2.2-2.28
0.77
2
28789
8350
1
93.2
2.28-2.37
0.622
2.4
31663
8579
1
99.2
2.37-2.48
0.496
3
33633
8962
1
99.3
2.48-2.61
0.393
3.8
32792
8689
1
99.4
2.61-2.77
0.31
4.8
32518
8561
1
99
2.77-2.98
0.214
6.8
33133
8654
1
99.4
2.98-3.28
0.129
10.8
33951
8845
1
99.5
3.28-3.76
0.074
18.2
33557
8850
1
99
3.76-4.72
0.039
29.8
33141
8686
1
99.2
4.72-29.604
0.031
37
34024
8827
1
98.5
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位相決定
位相決定
手法: 単波長異常分散
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解析
ソフトウェア
名称
バージョン
分類
NB
REFMAC
5.4.0067
精密化
PHENIX
精密化
SHELX
位相決定
MolProbity
3beta29
モデル構築
XSCALE
データスケーリング
PDB_EXTRACT
3.004
データ抽出
XDS
データ削減
SHELXD
位相決定
autoSHARP
位相決定
精密化
構造決定の手法: 単波長異常分散 / 解像度: 2.2→29.604 Å / Cor.coef. Fo:Fc: 0.961 / Cor.coef. Fo:Fc free: 0.935 / SU B: 10.417 / SU ML: 0.142 / TLS residual ADP flag: LIKELY RESIDUAL / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R: 0.216 / ESU R Free: 0.188 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.ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY. 3.A MET-INHIBITION PROTOCOL WAS USED FOR SELENOMETHIONINE INCORPORATION DURING PROTEIN ...詳細: 1.HYDROGENS HAVE BEEN ADDED IN THE RIDING POSITIONS. 2.ATOM RECORD CONTAINS RESIDUAL B FACTORS ONLY. 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 TO ACCOUNT FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 4.GLYCEROL MOLECULES FROM THE CRYSTALLIZATION CONDITIONS ARE MODELED INTO THE STRUCTURE. 5. THREE ZN IONS, WHICH CO-PURIFIED WITH THE PROTEIN, ARE MODELED IN EACH SUBUNIT OF THIS STRUCTURE. ANOMALOUS DIFFERENCE FOURIERS AND X-RAY FLUORESCENCE EXPERIMENTS SUPPORT THE ASSIGNMENT OF THE ZINC ATOMS. 6.IN THE CONSERVED ACTIVE SITES, CACODYLATE ANIONS FROM THE CRYSTALLIZATION BUFFER HAVE BEEN MODELED. THE PRESENCE OF CACODYLATE AT THESE SITES IS SUPPORTED BY ANOMALOUS DIFFERENCE FOURIERS. HOWEVER, THE SITES ARE DISORDERED AND MAY ONLY BE PARTIALLY OCCUPIED. SINCE THIS DISORDER COULD NOT BE RESOLVED, ONLY A SINGLE ORIENTATION OF CACODYLATE IS MODELED IN THE STRUCTURE, EVEN THOUGH THIS DOES NOT FULLY SATISFY THE COORDINATION GEOMETRY OF THE ZN SITES.
Rfactor
反射数
%反射
Selection details
Rfree
0.225
2319
5.1 %
RANDOM
Rwork
0.172
-
-
-
obs
0.175
45753
98.77 %
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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