Heteronomous DNA (original) (raw)
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Department of Biological Sciences, Purdue University
West Lafayette, IN 47907, USA
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Department of Biological Sciences, Purdue University
West Lafayette, IN 47907, USA
Search for other works by this author on:
,
Department of Biological Sciences, Purdue University
West Lafayette, IN 47907, USA
Search for other works by this author on:
Department of Biological Sciences, Purdue University
West Lafayette, IN 47907, USA
Search for other works by this author on:
Received:
08 February 1983
Revision received:
27 April 1983
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Struther Arnott, R. Chandrasekaran, I.H. Hall, L.C. Puigjaner, Heteronomous DNA, Nucleic Acids Research, Volume 11, Issue 12, 25 June 1983, Pages 4141–4155, https://doi.org/10.1093/nar/11.12.4141
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Abstract
A fibrous form of poly d(A):poly d(T) has a heteronomous secondary structure which is the first to be confirmed for a polynucleotide duplex: although both chains are 101 helices, mutually hydrogen-bonded in the standard (Watson-Crick) fasnion, each has a quite different conformation. One chain -- probably poly d(A) -- has C3′-endo-puckered furanose rings characteristic of the A family of polynucleotide secondary structures while the other -- probably poly d(T) -- has the C2′-endo-puckered rings of the B family. Since analogous heteronomous structures could be assumed by DNA-DNA or DNA-RNA duplexes containing more general base sequences the polymorphic range of polynucleotide double-helices may be even greater than we have come to suppose.
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