| Allowed Value | Details |
|---|---|
| amide | |
| covalent | |
| directed | |
| diselenide | |
| disulfide | |
| ester | |
| ether | |
| hydrogen | |
| metal coordination | |
| na | |
| oxime | |
| peptide | |
| phosphodiester | |
| phosphoester | |
| thioester | |
| thioether |
| Allowed Value | Details |
|---|---|
| amide | |
| covalent | |
| directed | |
| diselenide | |
| disulfide | |
| ester | |
| ether | |
| hydrogen | |
| metal coordination | |
| na | |
| oxime | |
| peptide | |
| phosphodiester | |
| phosphoester | |
| thioester | |
| thioether |