The polymorphic nature of double helical DNA, as expounded by Stanley Bram in the 1970s
(1), is now well established (2-4). The interconversions between alternative conformations …

For as long as 20 years after the historical paper of Watson and Crick'on the DNA structure,
this molecule has generally been considered to be a perfectly regular double helix with …

It is shown that left-handed duplexes are possible for A, B, and D forms of DNA. These
duplexes are stereochemically satisfactory and are consistent with the observed x-ray …

Two kinds of conformational variability have been reported for left-handed Z-DNA: the Z to
Z′ transition, which involves a change in guanine sugar pucker from C-3′-endo to C-1 …

The development of practical methods of large-scale, high-purity DNA oligonucleotide
synthesis (Tan et al., this volume) has made it possible for the first time to carry out single …

We review the effect of sequence on the structure of left‐handed Z‐DNA in single crystals.
The various substituent groups that define a nucleotide base as guanine, cytosine, thymine …

A number of recent studies have shown that simple repetitive d (CA/TG) dinucleotide
sequences adopt a left-handed non-B-DNA structure under negative superhelical stress …

We report transient electric dichroism studies of short double-helical DNA and poly [d (GC)]
fragments in alcohol/water mixtures. The limiting reduced dichroism and the rotational …

The idea that DNA might have both right-and left-handed double helical conformations is not
a new one. In fact, it arose almost immediately with the formulation of the double helix by …

The energetics of the BZ transition of two different types of cloned alternating
purine/pyrimidine DNA sequences have been analysed by a two dimensional …