Figure 4
Two dimensions of the sugar-center location can be accurately predicted using only the coordinates of the 3′ and 5′ phosphates. (a) The interphosphate distance d is used to predict the radial and vertical components of the sugar-center location (r and z, respectively). (b) The radial component. Each point represents a nucleotide in the RNA05 data set, with sugar puckers as indicated. The quadratic regression (equation 1) is shown. For this regression, r2 = 0.74. (c) The vertical component. The linear regression (equation 3) is shown. For this regression, r2 = 0.78. Note that the regressions in (b) and (c) were calculated using all data points, regardless of sugar pucker. |