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Synthesis and physical characterization of the self-complementary, alternating pyrimidine/purine hexanucleotide
Nucleic Acids Research
|October 25, 1982
Abstract:
The hexanucleotide d(CGTACG) has been synthesized by a phosphotriester method in which, for the first time, an O-6 protected deoxyguanosine derivative has been used to avoid side reactions of the guanine residues. Conformational analysis by circular dichroism shows that d(CGTACG) maintains a B form under conditions (5 M NaCl) where the all C/G hexanucleotide d(CG)3 adopts a Z form, even though d(CGTACG) is a fully alternating pyrimidine/purine molecular. The delta H for the helix-to-coil transition has been measured.