期刊
BIOORGANIC & MEDICINAL CHEMISTRY LETTERS
卷 15, 期 8, 页码 2047-2050出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.bmcl.2005.02.050
关键词
G-quartet; quadruplex; fluorescence; molecular beacon; DNA melting; inosine
We have examined the stability of fluorescently-labelled oligonucleotides that are based on the human telomeric repeat [(GGGTTA)(3)GGG], in which one of the guanines in turn is substituted with inosine. We show that the relative stability of the substitutions is different in the presence of sodium and potassium. The data for potassium suggest a parallel arrangement of the strands, while the sodium form is mixed parallel and antiparallel. (c) 2005 Elsevier Ltd. All rights reserved.
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