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Structure of the β-cFapy-dG•dC duplexes seen with the major groove prominent. The left panel corresponds to the Z isomer (PDB ID: 2lwm, BMRB ID 18638) and the central and right panels to the major (PDB ID: 2lwn, BMRB ID 18639) and minor (PDB ID: 2lwo, BMRB ID 18640) rotameric forms of the E isomer, respectively.
