CONFORMATIONAL STUDIES OF HAIRPIN SEQUENCES FROM THE COLE1 CRUCIFORM

被引：13

作者：

BLATT, NB ^{[1
]}

OSBORNE, SE ^{[1
]}

CAIN, RJ ^{[1
]}

GLICK, GD ^{[1
]}

机构：

[1] UNIV MICHIGAN, DEPT CHEM, ANN ARBOR, MI 48109 USA

来源：

BIOCHIMIE | 1993年 / 75卷 / 06期

关键词：

DNA; HAIRPIN STEM-LOOP; NUCLEAR MAGNETIC RESONANCE (NMR); CRUCIFORM; THERMODYNAMIC STABILITY;

D O I：

10.1016/0300-9084(93)90108-5

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Inverted repeat sequences derived from the ColE1 cruciform were investigated by nuclear magnetic resonance (NMR) and UV spectroscopy. It was shown that 15 different sequences exist as stable hairpin structures over a range of buffer conditions and DNA concentrations. Experiments with six oligomers (1-6) containing the native stem sequence and five base loops, found that the two hairpins with the wild-type loops (1-2) served as upper and lower bounds for the thermodynamic stability of all the other sequences. NMR experiments, including rotational correlation time measurements and NOESY spectra, were then performed on 1, the most stable hairpin sequence to begin to uncover a structural basis of its stability.

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页码：433 / 441

页数：9

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