RNA:DNA hybrids are more stable than DNA:DNA duplexes in concentrated perchlorate and trichloroacetate solutions
- 1 January 1978
- journal article
- research article
- Published by Oxford University Press (OUP) in Nucleic Acids Research
- Vol. 5 (5) , 1627-1637
- https://doi.org/10.1093/nar/5.5.1627
Abstract
Rates of formation of RNA:DNA hybrids have been measured as a function of temperature and compared to DNA:RNA duplex denaturation temperatures in 4 M sodium perchlorate, 4 M NaClO4-6 M urea, and 3 M rubidium trichloracetate solvents. The usual bell shaped curves of reaction rate versus temperature were observed. The optimal temperatures for the RNA:DNA association reaction are 5 degrees to 12 degrees greater than the Tm's for DNA:DNA denaturation in these solvents, just as in formamide. R-loops of phi80d3ilv DNA with E. coli rRNA can be formed at high efficiency in these solvents.Keywords
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