Abstract
Comparison of ORFs between H. pylori strains 26695 and J99 showed that transitions (more than 3%) prevail over transversions (less than 1%). The predominance of transitions was explained by the high rates of cytosine replacement by thymine in the coding (3.5–5.3%) and noncoding (2.9–3.9%) DNA strands. The proportion of transversion-type correspondences (A → C, A → T, C → A, C → G, G → C, G → T, T → A, and T → G) did not exceed 0.84%. The highest proportion (28.3%) was observed for correspondences between C and T in ACGT-ATGT, the target site of active methyltransferase of H. pylori J99 (M.Hpy99XI). It was assumed that C → T mutations due to cytosine methylation-deamination are prevalent in H. pylori.
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Translated from Molekulyarnaya Biologiya, Vol. 39, No. 6, 2005, pp. 945–951.
Original Russian Text Copyright © 2005 by Momynaliev, Rogov, Govorun.
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Momynaliev, K.T., Rogov, S.I. & Govorun, V.M. Nucleotide Correspondence between Protein-Coding Sequences of Helicobacter pylori Strains 26695 and J99. Mol Biol 39, 826–832 (2005). https://doi.org/10.1007/s11008-005-0101-1
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DOI: https://doi.org/10.1007/s11008-005-0101-1