Table 1.
The ten aquaporin representative three-dimensional-structures.
| PDB-code | Subfamily | Source | Resolution (Å) | Main selectivity |
| 1fx8 (13) | GlpF | Escherichia coli | 2.20 | Glycerol, Water (low) (7) |
| 1j4n (40) | AQP1 | Bos taurus | 2.20 | Water (29) |
| 1rc2 (41) | AqpZ | Escherichia coli | 2.50 | Water (6) |
| 1ymg (32) | AQP0 | Bos taurus | 2.24 | Water (low) (29) |
| 1z98 (28) | PIP2 | Spinacia oleracea | 2.10 | Water (42) |
| 2f2b (43) | AqpM | Methanothermobacter marburgensis | 1.68 | Glycerol, Water (low) (8) |
| 2w2e (5) | Aqy1 | Pichia pastoris | 1.15 | Water (5) |
| 3c02 (44) | PfAQP | Plasmodium falciparum | 2.05 | Water, Glycerol* (9) |
| 3d9s (45) | AQP5 | Homo sapiens | 2.00 | Water (29) |
| 3gd8 (46) | AQP4 | Homo sapiens | 1.80 | Water (29) |
*Sugar alcohols up to five carbons and urea have also been shown to permeate the pore (9).