Forms a water-specific channel that provides the plasma membranes of renal collecting duct with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient. Expressed in renal collecting tubules. Belongs to the MIP/aquaporin (TC 1.A.8) family. Note: This description may include information from UniProtKB.
Cellular Component: recycling endosome; protein complex; clathrin-coated vesicle; membrane; rough endoplasmic reticulum; integral to plasma membrane; lysosome; basolateral plasma membrane; early endosome; apical plasma membrane; plasma membrane; trans-Golgi network
Molecular Function: water transporter activity; glycerol transmembrane transporter activity; actin binding; water channel activity; glycerol channel activity; PDZ domain binding
Biological Process: glycerol transport; actin filament depolymerization; cellular water homeostasis; response to glucagon stimulus; apoptosis; response to lithium ion; water transport; cellular response to water deprivation; response to lipopolysaccharide; female pregnancy; excretion; response to salt stress; response to starvation; hyperosmotic response; renal water transport; renal water homeostasis; positive regulation of calcium ion transport; response to calcium ion; transmembrane transport; aging
SS: The number of records in which this modification site was determined using site-specific methods. SS methods include amino acid sequencing, site-directed mutagenesis, modification site-specific antibodies, specific MS strategies, etc.