- PDB-3g16: Crystal structure of protein of unknown function with cystatin-li... -
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基本情報
登録情報
データベース: PDB / ID: 3g16
タイトル
Crystal structure of protein of unknown function with cystatin-like fold (YP_001022489.1) from METHYLOBIUM PETROLEOPHILUM PM1 at 1.45 A resolution
要素
uncharacterized protein with cystatin-like fold
キーワード
structural genomics / unknown function / YP_001022489.1 / protein of unknown function with cystatin-like fold / Joint Center for Structural Genomics / JCSG / Protein Structure Initiative / PSI-2
機能・相同性
SnoaL-like domain / SnoaL-like domain / Nuclear Transport Factor 2; Chain: A, - #50 / NTF2-like domain superfamily / Nuclear Transport Factor 2; Chain: A, / Roll / Alpha Beta / Unknown ligand / SnoaL-like domain-containing protein
THIS CONSTRUCT WAS EXPRESSED WITH A PURIFICATION TAG MGSDKIHHHHHHENLYFQG. THE TAG WAS REMOVED WITH ...THIS 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: 2.56 Å3/Da / 溶媒含有率: 51.87 %
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: 1.0000M LiCl, 20.0000% PEG-6000, 0.1M MES pH 6.0, NANODROP, VAPOR DIFFUSION, SITTING DROP, temperature 277K
モノクロメーター: Single crystal Si(111) bent monochromator (horizontal focusing) 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
0.97864
1
3
0.97817
1
反射
解像度: 1.45→27.973 Å / Num. obs: 63677 / % possible obs: 97.7 % / Observed criterion σ(I): -3 / Biso Wilson estimate: 18.269 Å2 / Rmerge(I) obs: 0.025 / Net I/σ(I): 16.47
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
1.45-1.5
0.374
2
19834
10613
1
88.8
1.5-1.56
0.271
2.8
22998
12218
1
98.9
1.56-1.63
0.192
3.9
22740
12059
1
98.9
1.63-1.72
0.136
5.4
24284
12812
1
99.2
1.72-1.83
0.091
8.2
23538
12401
1
99.2
1.83-1.97
0.056
12.7
22909
12037
1
98.9
1.97-2.17
0.035
20.1
23439
12257
1
98.9
2.17-2.48
0.026
26.7
23006
11971
1
98.6
2.48-3.12
0.019
35.1
23436
12103
1
98.5
3.12-27.973
0.014
47.2
23550
12025
1
97.1
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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
REFMAC
5.2.0019
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
3.006
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: 多波長異常分散 / 解像度: 1.45→27.973 Å / Cor.coef. Fo:Fc: 0.974 / Cor.coef. Fo:Fc free: 0.966 / Occupancy max: 1 / Occupancy min: 0.25 / SU B: 1.695 / SU ML: 0.033 / TLS residual ADP flag: LIKELY RESIDUAL / 交差検証法: THROUGHOUT / σ(F): 0 / ESU R: 0.054 / ESU R Free: 0.054 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 RECORDS CONTAIN 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 RECORDS CONTAIN 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 FOR THE REDUCED SCATTERING POWER DUE TO PARTIAL S-MET INCORPORATION. 4.CHLORIDE (CL) FROM THE CRYSTALLIZATION AND GLYCEROL (GOL) FROM THE CRYOPROTECTION CONDITION HAVE BEEN MODELED IN THE SOLVENT STRUCTURE. 5.AN UNIDENTIFIED LIGAND (UNL) HAS BEEN MODELED IN THE PUTATIVE ACTIVE SITE IN BOTH PROTEIN MOLECULES. IT IS POSSIBLE THAT THIS UNL IS ACTUALLY A PARTIALLY OCCUPIED MES MOLECULE FROM THE CRYSTALLIZATION BUFFER. THIS INFERENCE IS BASED ON THE LOWER B-FACTOR OF ATOM O7 OF UNL-1 WHICH SUGGESTS THAT THIS MAY BE A HEAVIER ATOM (LIKE SULFUR). 6.RESIDUES 45-48 IN CHAIN B HAVE POOR ELECTRON DENSITY AND AND HAVE BEEN MODELED BASED ON THE CORRESPONDING REGION OF CHAIN A.
Rfactor
反射数
%反射
Selection details
Rfree
0.167
3217
5.1 %
RANDOM
Rwork
0.148
-
-
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obs
0.149
63622
99.39 %
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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