Table 1. RBM-Based Classification of Amino Acids^a.

^aThe first column labels which amino acids can be classified as polar/hydrophilic and nonpolar/hydrophobic according to the weights of our RBMs. The second column shows the textbook classification of amino acids.⁴³ According to RBMs, Tyr behaves as a nonpolar amino acid, Pro behaves mostly as a polar one , and Ala is slightly only in β-sheets. Gly is neither clearly nor . The color of each amino acid symbol in the last column (and the offset) follows the subgrouping we introduce based on the weights learned by the RBMs applied to α-helices.