Table 1.
Annotated components types archived in the RCSB PDB Ligand Expo.
| Component Type | # entries | Component Type | # entries |
|---|---|---|---|
| non-polymer | 26566 | L-peptide linking | 1182 |
| * saccharide | 200 | D-peptide linking | 123 |
| * D-saccharide | 299 | peptide-like | 539 |
| * D-saccharide 1,4 and 1,4 linking | 13 | peptide linking | 77 |
| * L-saccharide | 58 | D-beta-peptide, C-gamma linking | 1 |
| * L-saccharide 1,4 and 1,4 linking | 1 | D-gamma-peptide, C-delta linking | 1 |
| RNA linking | 287 | L-gamma-peptide, C-delta linking | 1 |
| L-RNA linking | 5 | L-peptide COOH carboxy terminus | 9 |
| L-DNA linking | 4 | D-peptide NH3 amino terminus | 2 |
| DNA linking | 405 | L-beta-peptide, C-gamma linking | 1 |
| DNA OH 3 prime terminus | 3 | RNA OH 5 prime terminus | 1 |
| DNA OH 5 prime terminus | 2 | RNA OH 3 prime terminus | 2 |
| L-peptide NH3 amino terminus | 13 | NA | 198 |