| AQP | Aquaporin |
| AQGP | Aquaglyceroporin |
| ar/R SF | Aromatic/arginine” selectivity filter |
| H2O2 | Hydrogen peroxide |
| MIP | Major Intrinsic Protein |
| NH4NO3 | Ammonium nitrate |
| NPA | Asparagine–proline–alanine” motif |
| PIP | Plasma membrane intrinsic protein |
| TMH | trans-alpha helical transmembranes region |
| TIP | Tonoplast intrinsic protein |
| XIP | X-intrinsic protein |