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Furanose pseudorotation wheel. The furanose proper torsions ν are inset with a molecular structure. A ring’s pseudorotation can be characterized by a position within the wheel using the Ar–Pθ polar coordinates or the Zx–Zy Cartesian coordinates. The red dashed, green dotted, and black lines indicate Exo (nE), Endo (nE), and Twist (nmT) conformations, respectively, where the integers m and n denote the O4′, C1′, C2′, C3′, and C4′ atoms in respective order.
