A nuclear Overhauser enhancement study on the imino proton resonances of a DNA pentadecamer comprising the specific target site of the cyclic AMP receptor protein in the ara BAD operon
- 9 January 1984
- journal article
- Published by Wiley in FEBS Letters
- Vol. 165 (2) , 216-222
- https://doi.org/10.1016/0014-5793(84)80172-6
Abstract
A 500 MHz 1H-NMR study on a synthetic DNA pentadecamer comprising the specific target site of the cAMP receptor protein in the ara BAD operon is presented. Using pre-steady state NOE measurements, unambiguous assignments of all the imino proton resonances and associated adenine (H2) resonances are obtained. From the NOE data interbase pair interproton distances involving the imino and adenine (H2) protons are determined. It is shown that these distances are very similar to those expected for classical B DNA (RMS difference of 0.5 Å), but are significantly different from those expected for classical A DNA (RMS difference of 1.1 Å)Keywords
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