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. 1977 Apr;4(4):989–1000. doi: 10.1093/nar/4.4.989

Polynucleotides. XLVI. 1 Synthesis and properties of poly (2'-amino-2'-deoxyadenylic acid).

M Ikehara, T Fukui, N Kakiuchi
PMCID: PMC342499  PMID: 17102

Abstract

Poly (2'-amino-2'-deoxyadenylic acid) [poly (Aa)] was prepared from chemically synthesized 2'-amino-2'-deoxy-ADP by the catalysis of polynucleotide phosphorylase. Poly (Aa) showed a similar UV absorption spectra to poly (A), but quite different CD spectra at pH 7.0 and 5.7. At the former pH it showed a single negative Cotton band and at the latter a curve with a large splitting of bands. Acid titration of poly (Aa) suggested protonated form below pH 7.0. Temperature absorption profiles and their dependency on sodium ion concentration suggested an ordered structure for poly (Aa) which is stabilized by stacking of bases and intrastrand interaction between 2'-amino and internucleotidic phosphate groups. Poly (Aa) forms a 1:2 complex with poly (U) at neutrality and its Tm was 45 degrees in the presence of 0.15M sodium ion.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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