476D: Calcium Form Of B-Dna Undecamer Gcgaattcgcg
reference: Atomic-resolution crystal structures of B-DNA reveal specific influences of divalent metal ions on conformation and packing., Minasov G, Tereshko V, Egli M, J Mol Biol 1999 Aug 6;291(1):83-99. PMID: 10438608

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