DNA capillary electrophoresis using poly(vinyl alcohol). II. Separation media.
DNA capillary electrophoresis using poly(vinyl alcohol). II. Separation media.
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使用聚(乙烯醇)进行 DNA 毛细管电泳。
DOI:
10.1002/elps.200305547
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发表时间:
2003
期刊:
影响因子:
2.9
通讯作者:
Chu,Benjamin
中科院分区:
文献类型:
--
作者:
Moritani,Tohei;Yoon,Kyunghwan;Chu,Benjamin
We represent the first extensive study on DNA capillary electrophoresis using various poly(vinyl alcohol) (PVAL)‐related polymers as separation media. As a separation medium, PVAL homopolymer has shown poor resolutions probably due to its very strong hydrogen‐bonding characteristics, resulting in extensive self‐aggregation. On the other hand, poly(vinyl alcohol‐co‐vinyl acetate) and poly(vinyl alcohol‐co‐1‐vinyl‐2‐pyrrolidone) (PVAL‐VP), both with a degree of polymerization of ∼3.0×103, have been found to give excellent electropherograms with good resolutions for the analysis of double‐stranded (ds)DNA. PVAL‐VP, with hydrolytic stability in high and low pH regions, has also yielded fair electropherograms for single‐stranded (ss)DNA under neutral and alkaline conditions, although further investigation is essential in order to increase the resolutions necessary for DNA sequencing analysis. The separations obtained under alkaline conditions have shown significantly shorter retention times, one‐third of that for the current commercial separation media, due to the higher ionization of phosphate groups in the DNA chains.
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发表时间:
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