Temperature-dependent CD and NMR studies on a synthetic oligonucleotide containing a B-Z junction at high salt.

Abstract:

:It is now accepted that two or more conformations may exist within the same DNA molecule, thereby generating conformational junctions. The presence of B-Z junctions between right- and left-handed DNA conformations has been detected in plasmids by a number of techniques. Preliminary characterization of the first example of a B-Z junction is a short DNA oligonucleotide has recently been reported [Sheardy, R. D. (1988) Nucleic Acids Res. 16, 1153-1167]. We report additional CD and NMR data that support the existence of the junction in this model oligomer. These studies indicate that only three base pairs are involved in the junction and only one of these is dramatically distorted. Furthermore, the NMR saturation-transfer experiments suggest the junction's internal motion is temperature dependent.

journal_name

Biochemistry

journal_title

Biochemistry

authors

Sheardy RD,Winkle SA

doi

10.1021/bi00428a046

subject

Has Abstract

pub_date

1989-01-24 00:00:00

pages

720-5

issue

2

eissn

0006-2960

issn

1520-4995

journal_volume

28

pub_type

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