334D:
reference: Defining GC-specificity in the minor groove: side-by-side binding of the di-imidazole lexitropsin to C-A-T-G-G-C-C-A-T-G., Kopka ML, Goodsell DS, Han GW, Chiu TK, Lown JW, Dickerson RE, Structure 1997 Aug 15;5(8):1033-46. PMID: 9309219

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