1VTT:
reference: G.T wobble base-pairing in Z-DNA at 1.0 A atomic resolution: the crystal structure of d(CGCGTG)., Ho PS, Frederick CA, Quigley GJ, van der Marel GA, van Boom JH, Wang AH, Rich A, EMBO J. 1985 Dec 16;4(13A):3617-23. PMID: 4092690

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