Grouping of the 20 standard amino acids to four basic groups (C1–C4) and three combined groups (|${H}_1$|-|${H}_3$|) according to their hydrophobicity and charge characteristics
| Group . | Amino acids . |
|---|---|
| Hydrophobic (C1) | A, F, G, I, L, M, P, V, W |
| Polar (C2) | C, N, Q, S, T, Y |
| Positively charged (C3) | K, H, R |
| Negatively charged (C4) | D, E |
| Combined |${\boldsymbol{H}}_{\mathbf{1}}$| | C1 + C2 |
| Combined |${\boldsymbol{H}}_{\mathbf{2}}$| | C1 + C3 |
| Combined |${\boldsymbol{H}}_{\mathbf{3}}$| | C1 + C4 |
| Group . | Amino acids . |
|---|---|
| Hydrophobic (C1) | A, F, G, I, L, M, P, V, W |
| Polar (C2) | C, N, Q, S, T, Y |
| Positively charged (C3) | K, H, R |
| Negatively charged (C4) | D, E |
| Combined |${\boldsymbol{H}}_{\mathbf{1}}$| | C1 + C2 |
| Combined |${\boldsymbol{H}}_{\mathbf{2}}$| | C1 + C3 |
| Combined |${\boldsymbol{H}}_{\mathbf{3}}$| | C1 + C4 |
Grouping of the 20 standard amino acids to four basic groups (C1–C4) and three combined groups (|${H}_1$|-|${H}_3$|) according to their hydrophobicity and charge characteristics
| Group . | Amino acids . |
|---|---|
| Hydrophobic (C1) | A, F, G, I, L, M, P, V, W |
| Polar (C2) | C, N, Q, S, T, Y |
| Positively charged (C3) | K, H, R |
| Negatively charged (C4) | D, E |
| Combined |${\boldsymbol{H}}_{\mathbf{1}}$| | C1 + C2 |
| Combined |${\boldsymbol{H}}_{\mathbf{2}}$| | C1 + C3 |
| Combined |${\boldsymbol{H}}_{\mathbf{3}}$| | C1 + C4 |
| Group . | Amino acids . |
|---|---|
| Hydrophobic (C1) | A, F, G, I, L, M, P, V, W |
| Polar (C2) | C, N, Q, S, T, Y |
| Positively charged (C3) | K, H, R |
| Negatively charged (C4) | D, E |
| Combined |${\boldsymbol{H}}_{\mathbf{1}}$| | C1 + C2 |
| Combined |${\boldsymbol{H}}_{\mathbf{2}}$| | C1 + C3 |
| Combined |${\boldsymbol{H}}_{\mathbf{3}}$| | C1 + C4 |
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