- PDB-1gip: THE NMR STRUCTURE OF DNA DODECAMER DETERMINED IN AQUEOUS DILUTE L... -
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基本情報
登録情報
データベース: PDB / ID: 1gip
タイトル
THE NMR STRUCTURE OF DNA DODECAMER DETERMINED IN AQUEOUS DILUTE LIQUID CRYSTALLINE PHASE
要素
5'-D(*CP*GP*CP*GP*AP*AP*TP*TP*CP*GP*CP*G)-3'
キーワード
DNA / B-DNA / DIPOLAR COUPLING / NOE / BASE-BASE ORIENTATIONAL POTENTIAL OF MEAN FORCE / DATABASE TORSION ANGLE POTENTIAL OF MEAN FORCE
機能・相同性
DNA / DNA (> 10)
機能・相同性情報
手法
溶液NMR / SIMULATED ANNEALING IN TORSION ANGLE SPACE USING A SIXTH ORDER PREDICTOR-CORRECTOR METHOD WITH AUTOMATIC TIME STEP SELECTION (C. SCHWIETERS, G.M. CLORE)
手法: SIMULATED ANNEALING IN TORSION ANGLE SPACE USING A SIXTH ORDER PREDICTOR-CORRECTOR METHOD WITH AUTOMATIC TIME STEP SELECTION (C. SCHWIETERS, G.M. CLORE) ソフトェア番号: 1 詳細: THE STRUCTURE IS BASED ON A TOTAL OF 162 NOE, 48 DISTANCES FOR WATSON-CRICK HYDROGEN BONDS, AND 137 DIHEDRAL 137 TORSION ANGLE RESTRAINTS, 198 CH AND 10 NH ONE-BOND DIPOLAR COUPLING ...詳細: THE STRUCTURE IS BASED ON A TOTAL OF 162 NOE, 48 DISTANCES FOR WATSON-CRICK HYDROGEN BONDS, AND 137 DIHEDRAL 137 TORSION ANGLE RESTRAINTS, 198 CH AND 10 NH ONE-BOND DIPOLAR COUPLING RESTRAINTS, AND 200 APPROXIMATE PROTON-PROTON DIPOLAR COUPLINGS. THE EXPERIMENTAL RESTRAINTS ARE THE SAME AS THOSE LISTED IN 1DUF. THE NON-BONDED CONTACTS ARE REPRESENTED BY A QUARTIC VAN DER WAALS REPULSION TERM AND A BASE-BASE POSITIONING DATABASE POTENTIAL OF MEAN FORCE. ALSO INCLUDED IS A TORSION ANGLE DATABASE POTENTIAL OF MEAN FORCE. IN THIS ENTRY THE SECOND TO LAST COLUMN REPRESENTS THE AVERAGE RMS DIFFERENCE BETWEEN THE INDIVIDUAL SIMULATED ANNEALING STRUCTURES AND THE MEAN COORDINATE POSITIONS. MODEL 1 IS CALCULATED WITH NOE-DERIVED INTERPROTON DISTANCE RESTRAINTS, DIPOLAR COUPLING RESTRAINTS AND TORSION ANGLE RESTRAINTS. MODEL 2 IS CALCULATED WITH DIPOLAR COUPLING AND TORSION ANGLE RESTRAINTS. NO NOE-DERIVED INTERPROTON DISTANCE RESTRAINTS WERE EMPLOYED. STRUCTURAL STATISTICS: ---------------------------------------------------------- RESTRAINTS MODEL 1 MODEL 2 (# MODEL 1/# MODEL 2) (NOE + DIPOLARS) (DIPOLARS ONLY) ---------------------------------------------------------- RMS DEVIATIONS FROM EXPERIMENTAL RESTRAINTS INTERPROTON DISTANCES (A) 0.065 0.114 (162/0) TORSION ANGLES (DEG) 0 0 (137/137) ALL DIPOLAR COUPLINGS (HZ) 2.8 2.6 (408/408) RMS DEVIATIONS AND DIPOLAR COUPLING R-FACTORS FOR DIFFERENT CLASSES OF DIPOLAR COUPLINGS C-H RIBOSE (HZ/%) (94/94)* 2.27 (11.4%) 2.27 (11.4%) C-H RIBOSE (HZ/%) (64/64)** 5.62 (28.1%) 5.24 (26.2%) C-H BASE (HZ/%) (24/24)* 2.78 (13.9%) 2.81 (14.1%) C-H BASE (HZ/%) (12/12)** 1.89 (9.26%) 2.01 (10.0%) C-H METHYL (HZ/%) (4/4)* 0.98 (4.9%) 0.79 (4.0%) N-H IMINO (HZ/%) (10/10)* 1.56 (15.9%) 1.50 (15.2%) H-H ABSOLUTE VALUE (HZ) (126/126) 1.26 1.25 H-H SIGN KNOWN (HZ) (74/74) 0.93 0.88 RMS DEVIATIONS FROM IDEALIZED COVALENT GEOMETRY BONDS (A) 0.003 0.003 ANGLES (DEG) 0.897 0.925 IMPROPER TORSIONS (DEG) 0.296 0.106 ---------------------------------------------------------- * MEASURED WITH AN ACCURACY OF +/- 2 HZ ** MEASURED WITH AN ACCURACY OF +/- 4 HZ DIPOLAR COUPLING R-FACTOR = RATIO RMS DEVIATION BETWEEN OBSERVED AND CALCULATED VALUES AND EXPECTED RMS DEVIATION IF VECTORS ARE RANDOMLY DISTRIBUTED. THE LATTER IS GIVEN BY {2DA**2[4 + 3H**2]/5}1/2 WHERE DA IS THE MAGNITUDE OF THE AXIAL COMPONENT OF THE ALIGNMENT TENSOR AND H IS THE RHOMBICITY. (ONLY APPLIES TO FIXED LENGTH VECTORS). THE VALUES OF DA(CH), DA(NH) AND H ARE -16 HZ, -7.7 HZ AND 0.26, RESPECTIVELY.
NMRアンサンブル
コンフォーマー選択の基準: THE RESTRAINED REGULARIZED MEAN STRUCTURES 計算したコンフォーマーの数: 40 / 登録したコンフォーマーの数: 2