| Allowed Value | Details | 
|---|---|
| ATOMN | nucleic acid | 
| ATOMP | protein | 
| ATOMS | sugar | 
| HETAC | coenzyme | 
| HETAD | drug | 
| HETAI | ion | 
| HETAIN | inhibitor | 
| HETAS | solvent | 
| HETIC | ion complex | 
| Allowed Value | Details | 
|---|---|
| ATOMN | nucleic acid | 
| ATOMP | protein | 
| ATOMS | sugar | 
| HETAC | coenzyme | 
| HETAD | drug | 
| HETAI | ion | 
| HETAIN | inhibitor | 
| HETAS | solvent | 
| HETIC | ion complex |