| ID | Sequence | Length | GC content |
|---|---|---|---|
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 3064 nt | 0.5349 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 2887 nt | 0.5345 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 1981 nt | 0.5775 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 1663 nt | 0.5767 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 3201 nt | 0.5351 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 3005 nt | 0.5338 | |
| GGAGGAGCAGGAGCAGCGCUCGAGGCCGCCCUGGGAGAGCUGAGAGGCA… | 3142 nt | 0.5341 |
This gene encodes a member of the aquaporin family of water-selective membrane channels. The encoded protein localizes to the plasma membrane and allows movement of water, glycerol and urea across cell membranes. This gene is highly expressed in the adipose tissue where the encoded protein facilitates efflux of glycerol. In the proximal straight tubules of kidney, the encoded protein is localized to the apical membrane and prevents excretion of glycerol into urine. The encoded protein is present in spermatids, as well as in the testicular and epididymal spermatozoa suggesting an important role in late spermatogenesis. Alternative splicing of this gene results in multiple transcript variants encoding different isoforms. This gene is located adjacent to a related aquaporin gene on chromosome 9. Multiple pseudogenes of this gene have been identified. [provided by RefSeq, Dec 2015]
A study in Wistar rats demonstrated that severe scald injury induced significant myocardial edema and synchronized upregulation of the AQP7 mRNA, with gene microarray analysis showing a 2.20-fold increase in the immediate fluid resuscitation group and a 3.73-fold increase in the delayed fluid resuscitation group at 12 hours post-injury compared to controls [Li et al. DOI:10.3906/sag-1401-149]. A study in mice and human forensic autopsy cases demonstrated that intrapulmonary aquaporin-5 (AQP5) expression is significantly suppressed in freshwater drowning compared to saltwater drowning and other causes of death, providing a potential tool for differentiation [Hayashi et al. DOI:10.1007/S00414-008-0235-5]. In a separate evaluation of human mRNA markers for blood identification, the AQP7 showed cross-reactivity with vaginal secretion and low expression in saliva, leading to its exclusion from further study in a multiplex body fluid identification system [Haas et al. DOI:10.1016/j.fsigen.2010.09.006].