1M6G:
reference: Conformational and hydration effects of site-selective sodium, calcium and strontium ion binding to the DNA Holliday junction structure d(TCGGTACCGA)(4)., Thorpe JH, Gale BC, Teixeira SC, Cardin CJ, J Mol Biol 2003 Mar 14;327(1):97-109. PMID: 12614611

This OCA Structure page
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