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The chemical or structural type of the interaction.
| Item Value | Description |
|---|---|
| covale | covalent bond |
| disulf | disulfide bridge |
| hydrog | hydrogen bond |
| metalc | metal coordination |
| mismat | mismatched base pairs |
| saltbr | ionic interaction |
| modres | covalent residue modification |
| covale_base | covalent modification of a nucleotide base |
| covale_sugar | covalent modification of a nucleotide sugar |
| covale_phosphate | covalent modification of a nucleotide phosphate |