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Figure 1
(a) The 16-mer DNA crystals and (b) the final structure of the double helix of the DNA segment. In (b) atoms are shown as follows: carbon, sky blue and blue for different DNA chains; phosphorus, orange; oxygen, red; nitrogen, dark blue. Nucleotides are labelled G, A, T and C and individual atoms are labelled in italics, with the nucleotide ID in parentheses. Ca2+(1), Ca2+(2) and Ca2+(3) all lie on a vertical threefold axis and have 1/3 occupancy each. (c) The 2D structure of the duplex of the DNA 16-mer [note that the numbering is as used in Huang et al. (2005BB24) so that the sequence starts at nucleotide 2].

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 26| Part 4| July 2019| Pages 998-1009
https://doi.org/10.1107/S160057751900763X
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