1D23:
reference: The structure of B-helical C-G-A-T-C-G-A-T-C-G and comparison with C-C-A-A-C-G-T-T-G-G. The effect of base pair reversals., Grzeskowiak K, Yanagi K, Prive GG, Dickerson RE, J Biol Chem 1991 May 15;266(14):8861-83. PMID: 2026600

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