PMID: 7538624Jan 1, 1995Paper

Absorption and circular dichroism spectroscopy of nucleic acid duplexes and triplexes

Methods in Enzymology
D M GrayK H Johnson

Abstract

Absorption and CD measurements of complementary oligomers and mixtures are described. The concentrations of oligomers may be estimated from absorption measurements and nearest-neighbor calculations of molar extinction coefficients. Interactions between complementary strands in mixtures can lead to obvious differences between measured CD spectra and the average of the spectra of the individual strands. CD spectra also allow an assessment of whether the individual strands are in self-complexes, which could compete with duplex or triplex formation. Isodichroic and isoabsorptive points provide important indicators of the stoichiometry of the strands in base-paired complexes. CD spectra provide an important means of characterizing differences in the conformations of DNA, RNA, and hybrid duplexes or triplexes having analogous sequences.

Citations

May 25, 2005·Chembiochem : a European Journal of Chemical Biology·Thibaut MichelJean-Jacques Vasseur
Mar 1, 2006·Biopolymers·Michaela VorlíckováJaroslav Kypr
Apr 23, 2008·Current Protocols in Nucleic Acid Chemistry·I Tinoco
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Mar 31, 2017·Environmental Science. Nano·Andrew P AultMartin A Philbert
Feb 5, 2019·Nucleic Acids Research·Petra ŠkolákováMichaela Vorlíčková

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