Table 1. List of descriptors.
Type | Abbreviation | Description | N |
Global | NetCharge@5 | Net charge at pH = 5. | 1 |
NetCharge@7 | Net charge at pH = 7. | 1 | |
NetCharge@9 | Net charge at pH = 9. | 1 | |
pI | Isoelectric point. | 1 | |
AA Count | Total amino acid count. | 1 | |
chPos | Sum and average of positive charges in side chain. | 2 | |
chNeg | Sum and average of negative charges in side chain. | 2 | |
Zi Average | Z-scale average sum along peptide sequence. | 5 | |
μZi | Z-scale moment distribution along peptide sequence. | 5 | |
Topological | AC | Min and Max auto covariance values between the same descriptor. | 100 |
CC | Min and Max cross covariance values between two descriptors. | 400 |
Two classes of descriptor were used in order to describe a single amino acidic sequence: global descriptors and topological descriptors. Here are listed for each class the type and number of variables.