Actinorhodin polyketide synthase acyl carrier protein 類似検索 - 構成要素
生物種
Streptomyces coelicolor (バクテリア)
手法
溶液NMR / simulated annealing
Model details
This is an ensemble of 20 NMR structures, ARIA 1.2 restraint files (ambiguous and non-ambiguous ...This is an ensemble of 20 NMR structures, ARIA 1.2 restraint files (ambiguous and non-ambiguous NOEs, TALOS restraints and J-coupling restraints. Chemical shift data has also been deposited for 1H, 15N and 13C.
分子量: 9239.177 Da / 分子数: 1 / 変異: C17S / 由来タイプ: 組換発現 由来: (組換発現) Streptomyces coelicolor (バクテリア) 解説: Actinorhodin acyl carrier protein (act ACP) from S. coelicolor was heterologously overexpressed in its apo form in E. coli BL21 (DE3) cells. These cells contained the plasmid pET11c C17S act ...解説: Actinorhodin acyl carrier protein (act ACP) from S. coelicolor was heterologously overexpressed in its apo form in E. coli BL21 (DE3) cells. These cells contained the plasmid pET11c C17S act ACP (courtesy of Dr. Tom Nicholson). This IPTG inducible vector is both easier to use and more reliable than the heat inducible pT7-7 version originally constructed. 発現宿主: Escherichia coli (大腸菌) / 株 (発現宿主): BL21 / Variant (発現宿主): DE3 / 参照: UniProt: Q02054
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実験情報
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実験
実験
手法: 溶液NMR 詳細: This is an ensemble of 20 NMR structures, ARIA 1.2 restraint files (ambiguous and non-ambiguous NOEs, TALOS restraints and J-coupling restraints. Chemical shift data has also been deposited for 1H, 15N and 13C.
NMR実験
Conditions-ID
Experiment-ID
Solution-ID
タイプ
1
1
1
2D 1H-15N HSQC
1
2
1
3DCBCA(CO)NH
1
3
1
3D HNCO
1
4
1
3D HN(CA)CB
1
5
1
3D (H)CCH-TOCSY
1
6
1
3D HNHA
1
7
1
3D 1H-15N NOESY
1
8
1
3D 1H-13C NOESY
NMR実験の詳細
Text: The structure was determined using a combination of NOE data (ambiguous and unambiguous as determined by ARIA) combined with J-coupling and TALOS dihedral restraints
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試料調製
詳細
内容: 1-2 mM [U-98% 13C; U-98% 15N] act ACP, 5% D2O, 95% H2O, 20 mM potassium phosphate, 1 mM sodium azide, 95% H2O/5% D2O 溶媒系: 95% H2O/5% D2O
手法: simulated annealing / ソフトェア番号: 1 詳細: All structure calculations were carried out using the Ambiguous Restraints for Iterative Assignment of NOEs (ARIA) protocol Version 1.2, which includes an algorithm that attempts to correct ...詳細: All structure calculations were carried out using the Ambiguous Restraints for Iterative Assignment of NOEs (ARIA) protocol Version 1.2, which includes an algorithm that attempts to correct for the effects of spin diffusion, was use. Torsion Angle Likelihood Obtained from Shift and sequence similarity (TALOS) and was used to predict φ and ψ dihedral angle restraints. Initially, structure calculation runs contained 8 iterations of 20 structures each, with the best 7 structures in each iteration (sorted according to total energy) being used for analysis and assignment. The number of dynamics steps was increased over default values to 20000 and 16000 for the first and second cooling stages respectively. After each run, violated restraints were checked, and those arising from noise peaks or incorrect assignments were removed/reassigned. Final ensembles of 100 structures were calculated from calibrated restraint tables. The 20 best structures (sorted according to total energy) were selected for water refinement. Water refined structures were calculated using the slightly modified refinement script applied to the RECOORD database. PROCHECK and WHATCHECK and quality indicators were compared to the average values for the RECOORD database of protein NMR structures.
代表構造
選択基準: closest to the average
NMRアンサンブル
コンフォーマー選択の基準: structures with the lowest energy 計算したコンフォーマーの数: 20 / 登録したコンフォーマーの数: 20