ジャーナル: Structure / 年: 1995 タイトル: Solution structures of the i-motif tetramers of d(TCC), d(5methylCCT) and d(T5methylCC): novel NOE connections between amino protons and sugar protons. 著者: Leroy, J.L. / Gueron, M.
1: SOME OF THE CYTIDINES ARE PROTONATED AT THE N3 POSITION. THESE RESIDUES HAVE BEEN ASSIGNED THE RESIDUE NAME C IN THE ENTRY AND ATOM H3 HAS BEEN FOOTNOTED.
NMR アンサンブル
データ
基準
コンフォーマー数 (登録 / 計算)
8 / -
代表モデル
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要素
#1: DNA鎖
DNA (5'-D(*MCYP*CP*T)-3')
分子量: 771.646 Da / 分子数: 4 / 由来タイプ: 合成
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実験情報
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実験
実験
手法: 溶液NMR
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試料調製
結晶化
*PLUS
手法: other / 詳細: NMR
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解析
ソフトウェア
名称
分類
X-PLOR
モデル構築
X-PLOR
精密化
X-PLOR
位相決定
精密化
ソフトェア番号: 1 詳細: 5MC STANDS FOR 5-METHYLCYTIDINE. THE STRUCTURE IS FORMED OF FOUR EQUIVALENT 5MCCT STRANDS DESIGNATED A, B, C, D. STRANDS A AND C, CONNECTED BY TWO HEMI-PROTONATED BASE PAIRS (5MC1.5MC1+ AND ...詳細: 5MC STANDS FOR 5-METHYLCYTIDINE. THE STRUCTURE IS FORMED OF FOUR EQUIVALENT 5MCCT STRANDS DESIGNATED A, B, C, D. STRANDS A AND C, CONNECTED BY TWO HEMI-PROTONATED BASE PAIRS (5MC1.5MC1+ AND C2.C2+), FORM A PARALLEL-STRANDED DUPLEX. THE RELATION BETWEEN STRANDS B AND D IS THE SAME AS THAT BETWEEN STRANDS A AND C. THE STRANDS OF EACH DUPLEX ARE RELATED BY A LONGITUDINAL TWO-FOLD SYMMETRY AXIS. THE DUPLEXES HAVE THE SAME LONGITUDINAL AXIS, AND THEY ARE ANTI-PARALLEL. THEIR HEMI-PROTONATED C.C+ BASE PAIRS ARE INTERCALATED FACE-TO-FACE. THE DUPLEXES CAN BE TRANSFORMED INTO ONE ANOTHER BY A 180 DEGREE ROTATION AROUND A TWO-FOLD AXIS PERPENDICULAR TO THE LONGITUDINAL AXIS, AND CONSEQUENTLY AROUND A THIRD AXIS PERPENDICULAR TO THE FIRST TWO. THE H3 IMINO PROTONS OF THE HEMI-PROTONATED 5MC1.5MC1+ PAIRS WERE NOT INCORPORATED IN THE COMPUTATIONS. THOSE OF THE C2.C2+ PAIRS WERE ARBITRARILY LOCATED ON THE C2 RESIDUES OF STRANDS A AND B, RESPECTIVELY.