Aquaporin 1

**Definition:** Aquaporin 1 forms a water-specific channel that is constitutively expressed at the PLASMA MEMBRANE of ERYTHROCYTES and KIDNEY TUBULES, PROXIMAL. It provides these cells with a high permeability to WATER. In humans polymorphisms of this protein result in the Colton blood group antigen.

**Tree numbers:** - D12.776.157.530.400.500.040.374 - D12.776.543.550.450.730.040.374 - D12.776.543.585.400.730.040.436

**Synonyms:** - CHIP28 Protein - AQP1 Protein - Channel-Forming Integral Membrane Protein Of 28 kDa - AQP-CHIP Protein - Aquaporin 1 Protein - Aquaporin-CHIP