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. 2020 May 14;48(11):6367–6381. doi: 10.1093/nar/gkaa383

Figure 2.

Figure 2.

The analyzed fragment is defined by twelve geometric parameters: seven backbone torsion angles δ1 to δ2, which are highlighted in cyan, plus two torsions around the glycosidic bonds χ1and χ2 (highlighted in green), plus three parameters highlighted in light blue, one pseudo-torsion angle μ, and two distances NN and C’C’. The parameters are defined as follows: δ1 C5′(1)–C4′(1)–C3′(1)–O3′(1), ϵ1 C4′(1)–C3′(1)–O3′(1)–P(2), ζ1 C3′(1)–O3′(1)–P(2)–O5′(2), α2 O3′(1)–P(2)–O5′(2)–C5′(2), β2 P(2)–O5′(2)–C5′(2)–C4′(2), ɣ2 O5′(2)–C5′(2)–C4′(2)–C3′(2), δ2 C5′(2)–C4′(2)–C3′(2)–O3′(2), χ1 O4′(1)–C1′(1)–N1/9(1)–C2/4(1), χ2 O4′(2)–C1′(2) N1/9(2)–C2/4(2), the parameters NN as N1/9(1)–N1/9(2), C′C′ as C1′(1)–C1′(2) distances. Finally, the pseudo-torsion μ is defined as the torsion between atoms defining the glycosidic bonds of the first and second nucleotide N1/N9(1)–C1′(1)–C1′(2)–N1/N9(2).