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Synthesis, capillary crystallization and preliminary joint X‐ray and neutron crystallographic study of Z‐­DNA without polyamine at low pH

Synthesis, capillary crystallization and preliminary joint X‐ray and neutron crystallographic... In order to crystallographically study the hydration of the major groove (convex surface) of Z‐DNA, the oligonucleotide d(CGCGCG) has been synthesized. Single crystals were grown by vapor diffusion using the hanging‐drop and sitting‐drop methods for X‐ray studies and by batch crystallization and evaporation within silicon tubes for neutron studies. Hexagonal crystals were obtained without the use of duplex‐stabilizing polyamines and at an acid pH. X‐­ray data collected at room temperature (1.5 Å resolution; unit‐cell parameters a = 17.90, b = 30.59, c = 44.61 Å) and at 100 K (1 Å resolution; a = 17.99, b = 30.98, c = 44.07 Å) and neutron data collected at room temperature (1.6 Å resolution; a = 18.00, b = 31.16, c = 44.88 Å) indicate that the DNA is in the Z‐form packing in space group P212121. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta Crystallographica Section F Wiley

Synthesis, capillary crystallization and preliminary joint X‐ray and neutron crystallographic study of Z‐­DNA without polyamine at low pH

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References (14)

Publisher
Wiley
Copyright
Copyright © 2006 Wiley Subscription Services, Inc., A Wiley Company
ISSN
1744-3091
eISSN
1744-3091
DOI
10.1107/S174430910601236X
pmid
16682774
Publisher site
See Article on Publisher Site

Abstract

In order to crystallographically study the hydration of the major groove (convex surface) of Z‐DNA, the oligonucleotide d(CGCGCG) has been synthesized. Single crystals were grown by vapor diffusion using the hanging‐drop and sitting‐drop methods for X‐ray studies and by batch crystallization and evaporation within silicon tubes for neutron studies. Hexagonal crystals were obtained without the use of duplex‐stabilizing polyamines and at an acid pH. X‐­ray data collected at room temperature (1.5 Å resolution; unit‐cell parameters a = 17.90, b = 30.59, c = 44.61 Å) and at 100 K (1 Å resolution; a = 17.99, b = 30.98, c = 44.07 Å) and neutron data collected at room temperature (1.6 Å resolution; a = 18.00, b = 31.16, c = 44.88 Å) indicate that the DNA is in the Z‐form packing in space group P212121.

Journal

Acta Crystallographica Section FWiley

Published: May 1, 2006

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