Figure 2
From: Relating the shape of protein binding sites to binding affinity profiles: is there an association?
Number of salient loadings across the 13 PCA factors of the PocketPicker descriptor matrix. 13 factors were obtained from the matrix of geometric features of the binding sites of target proteins by PCA. The number of salient loadings (i.e., loadings with a value of > 0.4 or ≤ -0.4) varied between 42 and 75 for the individual factors which reflect a simple factor structure since the original PocketPicker descriptor matrix contained 405 variables.