Affinity capillary electrophoretic DNA separation using PEG-oligodeoxyribonucleotide block copolymers: relationship between peak resolution and affinity strength.
Affinity capillary electrophoretic DNA separation using PEG-oligodeoxyribonucleotide block copolymers: relationship between peak resolution and affinity strength.
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使用 PEG-寡脱氧核糖核苷酸嵌段共聚物进行亲和毛细管电泳 DNA 分离:峰值分辨率和亲和强度之间的关系。
DOI:
10.1002/jssc.200700521
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发表时间:
2008
影响因子:
3.1
通讯作者:
M. Maeda
中科院分区:
文献类型:
--
作者:
N. Kanayama;T. Takarada;Ayumi Kimura;H. Shibata;M. Maeda
Capillary electrophoretic separation of chemically synthesized ssDNA and a single-base-substituted one (normal and mutant ssDNA, respectively) was demonstrated using a PEG-oligodeoxyribonucleotide block copolymer (PEG-b-ODN) as an affinity ligand. When the base sequence of PEG-b-ODN was designed to be complementary to part of normal ssDNA including the base-substituted site, the electrophoretic mobility of normal ssDNA significantly decreased whereas that of mutant ssDNA slightly changed. Resolution of the separation strongly depended on the ODN length of the copolymer, the capillary temperature, and the Mg2+ concentration in the running buffer, indicating that the retardation of migration of normal ssDNA was induced by the reversible hybridization with PEG-b-ODN. It was found that the dissociation constant (K(d)) of the duplex between normal ssDNA and the affinity probe ODN should be smaller than 10(-6) M to achieve the good peak separation. In addition, we calculated the mobility of the complex (mu(C)) between normal ssDNA and PEG-b-ODN using a two-state model. The base sequence of affinity probe ODN appropriate to achieve the sufficient resolution will be predicted on the basis of the mu(C) and K(d )values.
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DOI:
--
发表时间:
2006
期刊:
Journal of Chromatography A 1111
影响因子:
--
作者:
S.Ichioka;et al.;Michikami D et al.;Kae Sato
通讯作者:
Kae Sato
DOI:
--
发表时间:
2005
期刊:
Analytical Sciences 21(1)
影响因子:
--
作者:
K.MISHIMA;T.TAKARADA;M.MAEDA
通讯作者:
M.MAEDA
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
通讯作者:
--
DOI:
--
发表时间:
2005
期刊:
Electrophoresis 26
影响因子:
--
作者:
Nishida;K.;Kae Sato
通讯作者:
Kae Sato