| ATP | adenosine triphosphate |
| ADP | adenosine diphosphate |
| AMP | adenosine monophosphate |
| IMP | inosine monophosphate |
| AdN | adenine nucleotide |
| PCr | Phosphocreatine |
| cAMP | cyclic AMP |
| AMPD3 | AMP deaminase 3 |
| IMPDH2 | inosine monophosphate dehydrogenase 2 |
| COPD | chronic obstructive pulmonary disease |