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Investigation Of Complex Formation By Oligomers Of Cytosine And Guanosine, Steven Roberts Davis
Investigation Of Complex Formation By Oligomers Of Cytosine And Guanosine, Steven Roberts Davis
Chemistry & Biochemistry Theses & Dissertations
Duplex formation between oligo(C:G) n where n=3 to 4 was shown not to occur under conditions favorable for duplex formation between poly G and poly C. Instead, a stable guano sine self-structure was found to form which a Tm of 50°C for (Gp)3 and 80°C for (Gp)4 at strand concentrations of 10-5M in 1M NaCl. Neither a duplex nor a self-structure formed in the absence of salt.
Oligomers of guanosine and cytosine were obtained by basic hydrolysis and separated according to chain length using DEAE Sephadex column chromatography. Separation of cytosine oligomers with chain lengths …