手法: 溶液NMR 詳細: This entry contains the NMR solution structures (DYANA models 1-20)and a Biopolymer Chain Elasticity structure (BCE model 21) of the truncated 23-mer DNA MUC1 aptamer. The coordinates of two ...詳細: This entry contains the NMR solution structures (DYANA models 1-20)and a Biopolymer Chain Elasticity structure (BCE model 21) of the truncated 23-mer DNA MUC1 aptamer. The coordinates of two bridging water molcules are available for model 21 upon request to J. Cognet. The 23-mer sequence was extracted from the S1.3/S2.2 total MUC1 aptamer sequence reported previously (Ferreira et al, Tumor Biology 2006). The 23-mer sequence includes all of the nucleotides that bind the VNTR MUC1 peptides. NMR data were obtained for a longer sequence (25-mer with dangling ends on both 5' and 3' ends) but the sequence was shortened to facilitate convergence in the simulated annealing (DYANA) protocol. VNTR peptides are targets for tumour diagnostics and therapeutics.
NMR実験
Conditions-ID
Experiment-ID
Solution-ID
タイプ
1
1
2
2D 1H-1H TOCSY
1
2
2
2D 1H-13C HSQC
1
3
2
2D 1H-31P COSY
1
4
2
2D DQF-COSY
1
5
2
2D 1H-1H TOCSY
1
6
2
2D 1H-1H NOESY
1
7
1
2D 1H-1H TOCSY
1
8
1
2D 1H-1H NOESY
2
9
3
2D 1H-1H TOCSY
2
10
3
2D 1H-1H NOESY
-
試料調製
詳細
Solution-ID
内容
溶媒系
1
1 mM DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3'), 20 mM sodium phosphate, 5 uM sodium azide, 50 mM sodium chloride, 90% H2O/10% D2O
90% H2O/10% D2O
2
2 mM DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3'), 20 mM sodium phosphate, 50 mM sodium chloride, 5 uM sodium azide, 100% D2O
100% D2O
3
1 mM DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3'), 20 mM sodium phosphate, 50 mM sodium chloride, 5 uM sodium azide, 90% H2O/10% D2O
90% H2O/10% D2O
試料
濃度 (mg/ml)
構成要素
Solution-ID
1mM
DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3')-1
1
20mM
sodium phosphate-2
1
5uM
sodium azide-3
1
50mM
sodium chloride-4
1
2mM
DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3')-5
2
20mM
sodium phosphate-6
2
50mM
sodium chloride-7
2
5uM
sodium azide-8
2
1mM
DNA (5'-D(*CP*AP*GP*TP*TP*GP*AP*TP*CP*CP*TP*TP*TP*GP*GP*AP*TP*AP*CP*CP*CP*TP*G)-3')-9
3
20mM
sodium phosphate-10
3
50mM
sodium chloride-11
3
5uM
sodium azide-12
3
試料状態
Conditions-ID
イオン強度
pH
圧 (kPa)
温度 (K)
1
50
6.5
ambient
298K
2
50
6.5
1atm
264.5K
-
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 UnityPlus
Varian
UNITYPLUS
500
1
Bruker Avance
Bruker
AVANCE
500
2
-
解析
NMR software
名称
バージョン
開発者
分類
DYANA
1.5
Guntert, BraunandWuthrich
精密化
PROSA
6.0.2
Guntert
解析
XEASY
1.2
Bartelsetal.
chemicalshiftassignment
XEASY
1.2
Bartelsetal.
peakpicking
NMRPipe
1998
Delaglio, Grzesiek, Vuister, Zhu, PfeiferandBax
解析
Amber
8
Case, Darden, Cheatham, III, Simmerling, Wang, Duke, Luo, ... andKollm
geometryoptimization
Smol
1
(SMOL) Pakleza, Santini, Cognet
構造決定
精密化
手法: simulated annealing, bioplymer chain elasticity / ソフトェア番号: 1 詳細: 100 structures were calculated with DYANA and the 20 structures with the smallest residual target function have been refined by energy minimization with AMBER before being deposited., A model ...詳細: 100 structures were calculated with DYANA and the 20 structures with the smallest residual target function have been refined by energy minimization with AMBER before being deposited., A model with the NMR-defined torsion angles was constructed with the BCE method and AMBER energy refined. It contains 2 bridging water molecules (coordinates available upon request to J. Cognet).
NMR constraints
NA alpha-angle constraints total count: 24 / NA beta-angle constraints total count: 23 / NA chi-angle constraints total count: 23 / NA delta-angle constraints total count: 23 / NA epsilon-angle constraints total count: 22 / NA gamma-angle constraints total count: 22 / NA other-angle constraints total count: 24 / NA sugar pucker constraints total count: 55 / NOE constraints total: 607 / NOE intraresidue total count: 198 / NOE long range total count: 35 / NOE medium range total count: 4 / NOE sequential total count: 161
代表構造
選択基準: fewest violations
NMRアンサンブル
Average torsion angle constraint violation: 0.2 ° コンフォーマー選択の基準: structures with the least restraint violations 計算したコンフォーマーの数: 100 / 登録したコンフォーマーの数: 20 / Maximum lower distance constraint violation: 0.1 Å / Maximum torsion angle constraint violation: 0.04 ° / Maximum upper distance constraint violation: 0.14 Å Torsion angle constraint violation method: potential energy function
NMR ensemble rms
Distance rms dev: 0.61 Å / Distance rms dev error: 0.02 Å