aqp-2 encodes, by alternative splicing, two isoforms of an biochemically atypical aquaglyceroporin; when expressed in Xenopus oocytes, AQP-2 increases water permeability 5- to 11-fold, and urea permeability 4.5-fold, but has no effect on glycerol permeability; AQP-2::GFP fusion proteins are expressed predominantly in the excretory cell and more weakly in muscle, motor neurons, and hypodermis; AQP-2 expression is also enriched in dauer larvae; loss of AQP-2 activity via mutation or RNAi results in no obvious defects; however, AQP-2, in conjunction with AQP-3, AQP-4, and AQP-8, is weakly required for recovery from hypotonic stress.
Enables water channel activity. Involved in water transport. Predicted to be located in basolateral plasma membrane. Expressed in excretory cell; hypodermis; and muscle cell. Human ortholog(s) of this gene implicated in several diseases, including brain edema; inflammatory bowel disease (multiple); and morbid obesity. Is an ortholog of several human genes including AQP3 (aquaporin 3 (Gill blood group)); AQP7 (aquaporin 7); and AQP9 (aquaporin 9).
Map position created from combination of previous interpolated map position (based on known location of sequence) and allele information. Therefore this is not a genetic map position based on recombination frequencies or genetic experiments. This was done on advice of the CGC.