sequence The protein that is the subject of this structure determination was cloned from ...sequence The protein that is the subject of this structure determination was cloned from Staphylococcus aureus subsp. Rosenbach. This strain has not been the subject of genome sequencing, however three other strains have been sequenced: MW2, Mu50,and N315. The amino acid residues at three positions in the protein structure described here differ from those at some or all of the same positions in the sequences from the three sequenced strains. These mutations, indicated by the notation XnY where the X is the residue in the sequenced strain, n is the position number, and Y is the residue in the structure described here, are as follows: Strain MW2: V57L and H68N Strains Mu50 and N315: H21N, V57L, and H68N
Text: amide proton exchange was measured by dissolving a lyophilized protonated sample in D2O
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試料調製
詳細
Solution-ID
内容
溶媒系
1
1 mM protein U-15N,13C; 20 mM MES, 100 mM NaCl, 5 mM CaCl2, 0.02% NaN3; 95% H2O, 5% D2O
95% H2O/5% D2O
2
1 mM protein U-15N,13C, 20 mM MES, 100 mM NaCl, 5 mM CaCl2, 0.02% NaN3; 100% D2O
100% D2O
3
0.4 mM protein U-15N,5%-13C; 20 mM MES, 100 mM NaCl, 5 mM CaCl2, 0.02% NaN3; 95% H2O, 5% D2O
95% H2O/5% D2O
試料状態
イオン強度: 0.115 / pH: 6.5 / 圧: ambient / 温度: 293 K
結晶化
*PLUS
手法: other / 詳細: NMR
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NMR測定
NMRスペクトロメーター
タイプ
製造業者
モデル
磁場強度 (MHz)
Spectrometer-ID
Varian INOVA
Varian
INOVA
600
1
Varian INOVA
Varian
INOVA
750
2
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解析
NMR software
名称
バージョン
開発者
分類
AutoStructure
1.1
Huang, Tejero, Montelione
データ解析
CNS
1.1
Brunger, Schwieters, Kuszewski, Tjandra, Clore
構造決定
CNS
1.1
Brunger
精密化
Felix
97
MSI
解析
Sparky
3
Goddard, Kneller
データ解析
TALOS
Cornilescu, Delaglio, Bax
データ解析
精密化
手法: automated generation of initial distance restraint set distance geometry simulated annealing final refinement in explicit solvent ソフトェア番号: 1 詳細: Backbone and sidechain assignments were determined manually from triple-resonance NMR data. NOE distance restraints were derived automatically from peak-picked data with AutoStructure, then ...詳細: Backbone and sidechain assignments were determined manually from triple-resonance NMR data. NOE distance restraints were derived automatically from peak-picked data with AutoStructure, then error-checked and corrected manually. The structure is based on 848 restraints: 710 meaningful distance restraints, 58 hydrogen bond restraints, and 80 dihedral angle restraints. There are 9.5 restraints per restrained residue. Phi dihedral restraints were derived from the HNHA experiment and TALOS. Psi dihedral restraints were derived from NOE ratios, secondary structure propensities evident in preliminary structures, alpha carbon chemical shifts, and TALOS. Residues 44-51 comprise a poorly-defined loop in this ensemble of structures. Residues 1-3 and 94-102 are unstructured termini.
代表構造
選択基準: similarity to average, few violations, and low energy
NMRアンサンブル
コンフォーマー選択の基準: structures with fewest restraint violations and lowest energy 計算したコンフォーマーの数: 30 / 登録したコンフォーマーの数: 20