#241 - 2020年1月 20年の分子を振り返って (Twenty Years of Molecules) 類似性 (1)
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集合体
登録構造単位
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-3') D: DNA (5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3') B: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3') C: DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3')
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-3') D: DNA (5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3') B: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3') C: DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3')
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-3') D: DNA (5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3') B: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3') C: DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3')
A: DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-3') D: DNA (5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3') B: DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3') C: DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3')
AUTHORS STATE THAT THE CRYSTAL IS AN INFINITE NETWORK MADE FROM THREE DNA STRANDS THAT SELF-ASSOCIATE. IN THE CURRENT ENTRY THE ASYMMETRIC UNIT IS COMPRISED OF 4 CHAINS, 3 OF WHICH ARE FRAGMENTS OF LONGER DNA STRANDS. APPLYING THE SPACE GROUP H3 SYMMETRY OPERATORS (X, Y, Z,), (-Y, X-Y, Z), AND (-X+Y,-X,Z) TO THE CONTENTS OF THE ASYMMETRIC UNIT GENERATES ONE TRIMERIC UNIT OF THE SELF-ASSOCIATED DNA NETWORK. ADDITIONAL DETAILS ABOUT THE CHEMICAL COMPOSITION AND ASSOCIATION ARE INCLUDED IN REMARK 400.
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要素
#1: DNA鎖
DNA (5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*G)-3')
分子量: 4884.168 Da / 分子数: 1 断片: THE 16 RESIDUES IS FROM OF THE FIRST PART OF A DNA MOLECULE USED IN EXPERIMENT, SEE REMARK 400 FOR DETAILS. 由来タイプ: 合成
#2: DNA鎖
DNA (5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3')
分子量: 5230.415 Da / 分子数: 1 断片: SYMMETRICALLY- AND SEQUENTIALLY REPEATING UNIT OF A CIRCULAR DNA MOLECULES, SEE REMARK 400 FOR DETAILS. 由来タイプ: 合成
#3: DNA鎖
DNA (5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3')
分子量: 4311.801 Da / 分子数: 1 / 由来タイプ: 合成
#4: DNA鎖
DNA (5'-D(P*GP*CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3')
分子量: 4550.957 Da / 分子数: 1 断片: THE 15 RESIDUES IS FROM OF THE LAST PART OF A DNA MOLECULE USED IN EXPERIMENT, SEE REMARK 400 FOR DETAILS. 由来タイプ: 合成
構成要素の詳細
THE STRUCTURE UNIT IS GENERATED FROM 7 DNA STRANDS WHICH FORM A NETWORK UNIT WITH INTERNAL 3-FOLD ...THE STRUCTURE UNIT IS GENERATED FROM 7 DNA STRANDS WHICH FORM A NETWORK UNIT WITH INTERNAL 3-FOLD SYMMETRY. EXTENDING OF THE STRUCTURE UNIT IN 3-D SPACE RESULTS THE CRYSTAL AT R3 SPACE GROUP (REPRESENTED AS H3). THE DNA SEQUENCES OF THE 7 STRANDS ARE: (#1) 3 STRANDS 5'-D(*GP*AP*GP*CP*AP*GP*CP*CP*CP*GP*TP*AP*CP*TP*CP*GP*GP* CP*TP*TP*GP*TP*CP*GP*TP*TP*CP*AP*TP*CP*A)-3'; (#2) 1 STRANDS 5'-D(P*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*GP*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*GP*CP*CP*GP*AP*GP*TP*AP*CP*GP*AP*CP*GP*AP*CP*AP*AP*G)-3'; (#3) 3 STRANDS 5'-D(*TP*CP*TP*GP*AP*TP*GP*AP*GP*GP*CP*TP*GP*C)-3'). THE ASYMMETRIC UNIT IS COMPRISED OF THE FIRST 16 NUCLEOTIDES OF THE FULL #1 STRAND (CHAIN A), BY THELAST 15 RESIDUES OF THE FULL #1 STRAND (CHAIN C), BY THE FIRST 17 NUCLEOTIDES OF THE #2 STRAND (CHAIN D) AND BY #3 STRAND (CHAIN B). CHAINS A (FIRST 16 RESIDUES OF STRAND #1) AND C (NEXT 15 RESIDUES OF STRAND #1) TOGETHER FORM THE FIRST DNA STRAND (#3) OF THE EXPERIMENT. THIS DNA STRAND SPANS TWO ASYMMETRIC UNITS- HENCE IT WAS DIVIDED INTO THE CURRENT CHAINS A AND C FOR CONVENIENT REPRESENTATION AND CRYSTALLOGRAPHIC COMPUTING. CHAIN A (1_555) IS COVALENTLY LINKED TO CHAIN C OF ANOTHER ASYMMETRIC UNIT (3_555); AND CHAIN C (1_555) IS COVALENTLY LINKED TO CHAIN A OF ANOTHER ASYMMETRIC UNIT (2_555). THE #2 STRAND FORM A CIRCULAR DNA MOLECULE AS A CONSEQUENCE OF INTERNAL 3-FOLD SYMMETRY OF THE TRIANGLE CHAIN D IN THE ASYMMETRIC UNIT REPRESENTS ONE OF THESE REPEATING UNITS. IT HAS 3 SYMMETRIC AND SEQUENTIAL REPEATING UNITS THAT ARE COVALENTLY LINKED TO EACH OTHER VIA THE O3' END OF RESIDUE 17D TO THE O5' END OF RESIDUE 1D) CHAIN D (1_555) IS COVALENTLY LINKED TO CHAIN D OF TWO NEIGHBOURING ASYMMETRIC UNITS (2_555) AND (3_555). THE SELECTION OF RESIDUES FROM THE DNA #2 AND #3 ARE DICTATED BY THEIR PROXIMITY (BASE PAIRING) TO CHAINS A AND C. CHAIN B IN THE ASYMMETRIC UNIT REPRESENTS THE THIRD OF THESE REPEATING UNITS.
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実験情報
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実験
実験
手法: X線回折 / 使用した結晶の数: 1
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試料調製
結晶化
温度: 293 K / 手法: 蒸気拡散法, シッティングドロップ法 / pH: 8.5 詳細: CRYSTALLIZATION CONDITIONS: GROWN BY VAPOR DIFFUSION WHILE TREATED WITH A CONTROLLED TEMPERATURE GRADIENT FROM 333 DEGS TO 293 DEGS., PH 8.5, VAPOR DIFFUSION, SITTING DROP
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データ収集
回折
平均測定温度: 190 K
放射光源
由来: シンクロトロン / サイト: NSLS / ビームライン: X25 / 波長: 1.1 Å
検出器
タイプ: ADSC QUANTUM 315r / 検出器: CCD / 詳細: GRAPHITE
放射
モノクロメーター: GRAPHITE / プロトコル: SINGLE WAVELENGTH / 単色(M)・ラウエ(L): M / 散乱光タイプ: x-ray