Aliases for AQP3 Gene
External Ids for AQP3 Gene
Previous GeneCards Identifiers for AQP3 Gene
This gene encodes the water channel protein aquaporin 3. Aquaporins are a family of small integral membrane proteins related to the major intrinsic protein, also known as aquaporin 0. Aquaporin 3 is localized at the basal lateral membranes of collecting duct cells in the kidney. In addition to its water channel function, aquaporin 3 has been found to facilitate the transport of nonionic small solutes such as urea and glycerol, but to a smaller degree. It has been suggested that water channels can be functionally heterogeneous and possess water and solute permeation mechanisms. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Dec 2015]
GeneCards Summary for AQP3 Gene
AQP3 (Aquaporin 3 (Gill Blood Group)) is a Protein Coding gene. Diseases associated with AQP3 include Pompholyx and Oligohydramnios. Among its related pathways are Aquaporin-mediated transport and Vasopressin-regulated water reabsorption. GO annotations related to this gene include transporter activity and glycerol channel activity. An important paralog of this gene is AQP9.
UniProtKB/Swiss-Prot for AQP3 Gene
Water channel required to promote glycerol permeability and water transport across cell membranes. Acts as a glycerol transporter in skin and plays an important role in regulating SC (stratum corneum) and epidermal glycerol content. Involved in skin hydration, wound healing, and tumorigenesis. Provides kidney medullary collecting duct with high permeability to water, thereby permitting water to move in the direction of an osmotic gradient. Slightly permeable to urea and may function as a water and urea exit mechanism in antidiuresis in collecting duct cells. It may play an important role in gastrointestinal tract water transport and in glycerol metabolism (By similarity).
Aquaporins (AQPs) are integral membrane proteins that facilitate the transport of water across biological membranes along an osmotic gradient. There have been 13 AQP isoforms (AQP0-AQP12) identified in humans and rodents to date.