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Karthik, S.; Mandal, P. K.; Thirugnanasambandam, A.; Gautham, N. (2019): Crystal structures of disordered Z-type helices. In: Nucleosides Nucleotides & Nucleic Acids, Vol. 38, No. 4: pp. 279-293
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The X-ray crystal structures of a decamer sequence d(CGCGTACGCG)(2) and a tetradecamer sequence d(CGCGCGTACGCGCG)(2) are presented here. Both sequences are alternating pyrimidine-purine repeat sequences and they form disordered, pseudo-continuous left handed Z-type helices. They demonstrate interesting variants of the bundles of columns of helices' mode of packing.