THE ORIGINAL SEQUENCE OF THE DNA DUPLEX INCLUDED IN THE CRYSTALLIZATION DROPS IS: 5' ...THE ORIGINAL SEQUENCE OF THE DNA DUPLEX INCLUDED IN THE CRYSTALLIZATION DROPS IS: 5' GAGGGAGTGCGTGGGTCTGA 3'/5' CTCAGACCCACGCACTCCCT 3'. THE DUPLEX WAS PARTLY DISORDERED IN THE CRYSTAL STRUCTURE (PROBABLY BECAUSE THE PROTEIN BINDS DNA UNSPECIFICALLY AND COULD BIND ALL ALONG THE DUPLEX). AS A RESULT ONLY 8 BP ARE VISIBLE IN THE ASYMMETRIC UNIT. THE DENSITY COULD NOT BE ASSIGNED TO ANY PARTICULAR SEQUENCE OF THE 19 BP DUPLEX AND HENCE THE ELECTRON DENSITY WAS MODELED BASED ON THE RELATIVE SIZE OF THE NUCLEOTIDE MOIETY (USING GUANOSINE FOR "PURINE-LIKE" DENSITIES AND CYTOSINE FOR "PYRIMIDINE-LIKE" DENSITIES).
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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
マシュー密度: 2.42 Å3/Da / 溶媒含有率: 49.16 %
結晶化
温度: 277 K / 手法: 蒸気拡散法, ハンギングドロップ法 / pH: 7.6 詳細: 19% PEG 3350, 210 mM KSCN, 5% ethylene glycol, 100 mM HEPES pH 7.6, VAPOR DIFFUSION, HANGING DROP, temperature 277K