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Conformational analysis
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The pseudorotation of furanoses, in particular ribofuranoses, is often described
in terms of pseudorotation angles (Ψ) and puckering (P). The endocyclic torsions
(τ) can be approximated using the relationship derived by Altona and Sundaraligam.
τi=P*cos(Ψ+i*4*π/5)
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