Table 2. Functional families used to evaluate performance of FEATURE.
| PROSITE | Index | Amino-acid | Atom |
| ADH_SHORT | 5 | TYR | eta oxygen (OH) |
| ALPHA_CA_1 | 11 | HIS | epsilon nitrogen #2 (NE2) |
| ASP_PROTEASE | 4 | ASP | delta oxygen #2 (OD2) |
| ATPASE_ALPHA_BETA | 8 | SER | gamma oxygen (OG) |
| CARBOXYLESTERASE_B_1 | 3 | CYS | gamma sulfur (SG) |
| CYTOCHROME_P450 | 8 | CYS | gamma sulfur (SG) |
| EF_HAND | 1 | ASP | delta oxygen #1 (OD1) |
| EGF_1 | 10 | CYS | gamma sulfur (SG) |
| IG_MHC | 3 | CYS | gamma sulfur (SG) |
| INSULIN | 2 | CYS | gamma sulfur (SG) |
| LACTALBUMIN_LYSOZYME | 3 | CYS | gamma sulfur (SG) |
| LECTIN_LEGUME_BETA | 6 | ASP | delta oxygen #1 (OD1) |
| PA2_HIS | 2 | HIS | gamma sulfur (SG) |
| PROTEIN_KINASE_ST | 5 | ASP | delta oxygen #2 (OD2) |
| PROTEIN_KINASE_TYR | 5 | ASP | delta oxygen #2 (OD2) |
| RNASE_PANCREATIC | 2 | LYS | zeta nitrogen (NZ) |
| SOD_CU_ZN_1 | 3 | HIS | epsilon nitrogen #2 (NE2) |
| TRYPSIN_HIS | 5 | HIS | epsilon nitrogen #2 (NE2) |
| TRYPSIN_SER | 6 | SER | gamma oxygen (OG) |
| ZINC_PROTEASE | 5 | GLU | epsilon oxygen #1 (OE1) |
Column PROSITE lists functional families used to evaluate performance of FEATURE. Column Index is index of the conserved position within the corresponding PROSITE regular expression. Column Amino-acid is code of the amino-acid at that position. Column Atom is the residue atom at which the FEATURE microenvironment is centered.