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NameAquaporin-2
Synonyms
  • ADH water channel
  • AQP-2
  • AQP-CD
  • Aquaporin-CD
  • Collecting duct water channel protein
  • Water channel protein for renal collecting duct
  • WCH-CD
Gene NameAQP2
OrganismHuman
Amino acid sequence
>lcl|BSEQ0013408|Aquaporin-2
MWELRSIAFSRAVFAEFLATLLFVFFGLGSALNWPQALPSVLQIAMAFGLGIGTLVQALG
HISGAHINPAVTVACLVGCHVSVLRAAFYVAAQLLGAVAGAALLHEITPADIRGDLAVNA
LSNSTTAGQAVTVELFLTLQLVLCIFASTDERRGENPGTPALSIGFSVALGHLLGIHYTG
CSMNPARSLAPAVVTGKFDDHWVFWIGPLVGAILGSLLYNYVLFPPAKSLSERLAVLKGL
EPDTDWEEREVRRRQSVELHSPQSLPRGTKA
Number of residues271
Molecular Weight28837.17
Theoretical pINot Available
GO Classification
Functions
  • water transmembrane transporter activity
  • glycerol channel activity
  • water channel activity
  • glycerol transmembrane transporter activity
Processes
  • transmembrane transport
  • cellular response to mercury ion
  • ion transmembrane transport
  • metanephric collecting duct development
  • renal water transport
  • cellular response to water deprivation
  • excretion
  • renal water homeostasis
  • water transport
  • cellular water homeostasis
  • glycerol transport
  • cellular response to copper ion
Components
  • basolateral plasma membrane
  • apical plasma membrane
  • recycling endosome
  • transport vesicle membrane
  • membrane
  • plasma membrane
  • Golgi apparatus
  • extracellular exosome
  • integral component of plasma membrane
General FunctionWater transmembrane transporter activity
Specific FunctionForms 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.
Pfam Domain Function
Transmembrane Regions17-34 41-59 86-107 128-148 157-176 203-224
GenBank Protein IDNot Available
UniProtKB IDP41181
UniProtKB Entry NameAQP2_HUMAN
Cellular LocationApical cell membrane
Gene sequence
>lcl|BSEQ0013409|Aquaporin-2 (AQP2)
ATGTGGGAGCTCCGCTCCATAGCCTTCTCCAGGGCTGTGTTCGCAGAGTTCCTGGCCACA
CTCCTCTTCGTCTTCTTTGGCCTCGGCTCTGCCCTCAACTGGCCACAGGCCCTGCCCTCT
GTGCTACAGATTGCCATGGCGTTTGGCTTGGGTATTGGCACCCTGGTACAGGCTCTGGGC
CACATAAGCGGGGCCCACATCAACCCTGCCGTGACTGTGGCCTGCCTGGTGGGCTGCCAC
GTCTCCGTTCTCCGAGCCGCCTTCTACGTGGCTGCCCAGCTGCTGGGGGCTGTGGCCGGA
GCCGCTCTGCTCCATGAGATCACGCCAGCAGACATCCGCGGGGACCTGGCTGTCAATGCT
CTCAGCAACAGCACGACGGCTGGCCAGGCGGTGACTGTGGAGCTCTTCCTGACACTGCAG
CTGGTGCTCTGCATCTTCGCCTCCACCGATGAGCGCCGCGGAGAGAACCCGGGCACCCCT
GCTCTCTCCATAGGCTTCTCCGTGGCCCTGGGCCACCTCCTTGGGATCCATTACACCGGC
TGCTCTATGAATCCTGCCCGCTCCCTGGCTCCAGCTGTCGTCACTGGCAAATTTGATGAC
CACTGGGTCTTCTGGATCGGACCCCTGGTGGGCGCCATCCTGGGCTCCCTCCTCTACAAC
TACGTGCTGTTTCCGCCAGCCAAGAGCCTGTCGGAGCGCCTGGCAGTGCTGAAGGGCCTG
GAGCCGGACACCGATTGGGAGGAGCGCGAGGTGCGACGGCGGCAGTCGGTGGAGCTGCAC
TCGCCGCAGAGCCTGCCACGGGGTACCAAGGCCTGA
GenBank Gene IDNot Available
GeneCard IDNot Available
GenAtlas IDNot Available
HGNC IDHGNC:634
Chromosome Location12
LocusNot Available
References
  1. Deen PM, Verdijk MA, Knoers NV, Wieringa B, Monnens LA, van Os CH, van Oost BA: Requirement of human renal water channel aquaporin-2 for vasopressin-dependent concentration of urine. Science. 1994 Apr 1;264(5155):92-5. 8140421
  2. Uchida S, Sasaki S, Fushimi K, Marumo F: Isolation of human aquaporin-CD gene. J Biol Chem. 1994 Sep 23;269(38):23451-5. 7522228
  3. van Lieburg AF, Verdijk MA, Knoers VV, van Essen AJ, Proesmans W, Mallmann R, Monnens LA, van Oost BA, van Os CH, Deen PM: Patients with autosomal nephrogenic diabetes insipidus homozygous for mutations in the aquaporin 2 water-channel gene. Am J Hum Genet. 1994 Oct;55(4):648-52. 7524315
  4. Sasaki S, Fushimi K, Saito H, Saito F, Uchida S, Ishibashi K, Kuwahara M, Ikeuchi T, Inui K, Nakajima K, et al.: Cloning, characterization, and chromosomal mapping of human aquaporin of collecting duct. J Clin Invest. 1994 Mar;93(3):1250-6. 7510718
  5. Marr N, Bichet DG, Lonergan M, Arthus MF, Jeck N, Seyberth HW, Rosenthal W, van Os CH, Oksche A, Deen PM: Heteroligomerization of an Aquaporin-2 mutant with wild-type Aquaporin-2 and their misrouting to late endosomes/lysosomes explains dominant nephrogenic diabetes insipidus. Hum Mol Genet. 2002 Apr 1;11(7):779-89. 11929850
  6. Gerhard DS, Wagner L, Feingold EA, Shenmen CM, Grouse LH, Schuler G, Klein SL, Old S, Rasooly R, Good P, Guyer M, Peck AM, Derge JG, Lipman D, Collins FS, Jang W, Sherry S, Feolo M, Misquitta L, Lee E, Rotmistrovsky K, Greenhut SF, Schaefer CF, Buetow K, Bonner TI, Haussler D, Kent J, Kiekhaus M, Furey T, Brent M, Prange C, Schreiber K, Shapiro N, Bhat NK, Hopkins RF, Hsie F, Driscoll T, Soares MB, Casavant TL, Scheetz TE, Brown-stein MJ, Usdin TB, Toshiyuki S, Carninci P, Piao Y, Dudekula DB, Ko MS, Kawakami K, Suzuki Y, Sugano S, Gruber CE, Smith MR, Simmons B, Moore T, Waterman R, Johnson SL, Ruan Y, Wei CL, Mathavan S, Gunaratne PH, Wu J, Garcia AM, Hulyk SW, Fuh E, Yuan Y, Sneed A, Kowis C, Hodgson A, Muzny DM, McPherson J, Gibbs RA, Fahey J, Helton E, Ketteman M, Madan A, Rodrigues S, Sanchez A, Whiting M, Madari A, Young AC, Wetherby KD, Granite SJ, Kwong PN, Brinkley CP, Pearson RL, Bouffard GG, Blakesly RW, Green ED, Dickson MC, Rodriguez AC, Grimwood J, Schmutz J, Myers RM, Butterfield YS, Griffith M, Griffith OL, Krzywinski MI, Liao N, Morin R, Palmquist D, Petrescu AS, Skalska U, Smailus DE, Stott JM, Schnerch A, Schein JE, Jones SJ, Holt RA, Baross A, Marra MA, Clifton S, Makowski KA, Bosak S, Malek J: The status, quality, and expansion of the NIH full-length cDNA project: the Mammalian Gene Collection (MGC). Genome Res. 2004 Oct;14(10B):2121-7. 15489334
  7. van Balkom BW, Savelkoul PJ, Markovich D, Hofman E, Nielsen S, van der Sluijs P, Deen PM: The role of putative phosphorylation sites in the targeting and shuttling of the aquaporin-2 water channel. J Biol Chem. 2002 Nov 1;277(44):41473-9. Epub 2002 Aug 22. 12194985
  8. Oksche A, Moller A, Dickson J, Rosendahl W, Rascher W, Bichet DG, Rosenthal W: Two novel mutations in the aquaporin-2 and the vasopressin V2 receptor genes in patients with congenital nephrogenic diabetes insipidus. Hum Genet. 1996 Nov;98(5):587-9. 8882880
  9. Canfield MC, Tamarappoo BK, Moses AM, Verkman AS, Holtzman EJ: Identification and characterization of aquaporin-2 water channel mutations causing nephrogenic diabetes insipidus with partial vasopressin response. Hum Mol Genet. 1997 Oct;6(11):1865-71. 9302264
  10. Mulders SM, Knoers NV, Van Lieburg AF, Monnens LA, Leumann E, Wuhl E, Schober E, Rijss JP, Van Os CH, Deen PM: New mutations in the AQP2 gene in nephrogenic diabetes insipidus resulting in functional but misrouted water channels. J Am Soc Nephrol. 1997 Feb;8(2):242-8. 9048343
  11. Vargas-Poussou R, Forestier L, Dautzenberg MD, Niaudet P, Dechaux M, Antignac C: Mutations in the vasopressin V2 receptor and aquaporin-2 genes in 12 families with congenital nephrogenic diabetes insipidus. J Am Soc Nephrol. 1997 Dec;8(12):1855-62. 9402087
  12. Kuwahara M: Aquaporin-2, a vasopressin-sensitive water channel, and nephrogenic diabetes insipidus. Intern Med. 1998 Feb;37(2):215-7. 9550615
  13. Mulders SM, Bichet DG, Rijss JP, Kamsteeg EJ, Arthus MF, Lonergan M, Fujiwara M, Morgan K, Leijendekker R, van der Sluijs P, van Os CH, Deen PM: An aquaporin-2 water channel mutant which causes autosomal dominant nephrogenic diabetes insipidus is retained in the Golgi complex. J Clin Invest. 1998 Jul 1;102(1):57-66. 9649557
  14. Goji K, Kuwahara M, Gu Y, Matsuo M, Marumo F, Sasaki S: Novel mutations in aquaporin-2 gene in female siblings with nephrogenic diabetes insipidus: evidence of disrupted water channel function. J Clin Endocrinol Metab. 1998 Sep;83(9):3205-9. 9745427
  15. Marr N, Bichet DG, Hoefs S, Savelkoul PJ, Konings IB, De Mattia F, Graat MP, Arthus MF, Lonergan M, Fujiwara TM, Knoers NV, Landau D, Balfe WJ, Oksche A, Rosenthal W, Muller D, Van Os CH, Deen PM: Cell-biologic and functional analyses of five new Aquaporin-2 missense mutations that cause recessive nephrogenic diabetes insipidus. J Am Soc Nephrol. 2002 Sep;13(9):2267-77. 12191971
  16. Lin SH, Bichet DG, Sasaki S, Kuwahara M, Arthus MF, Lonergan M, Lin YF: Two novel aquaporin-2 mutations responsible for congenital nephrogenic diabetes insipidus in Chinese families. J Clin Endocrinol Metab. 2002 Jun;87(6):2694-700. 12050236
  17. de Mattia F, Savelkoul PJ, Bichet DG, Kamsteeg EJ, Konings IB, Marr N, Arthus MF, Lonergan M, van Os CH, van der Sluijs P, Robertson G, Deen PM: A novel mechanism in recessive nephrogenic diabetes insipidus: wild-type aquaporin-2 rescues the apical membrane expression of intracellularly retained AQP2-P262L. Hum Mol Genet. 2004 Dec 15;13(24):3045-56. Epub 2004 Oct 27. 15509592
  18. de Mattia F, Savelkoul PJ, Kamsteeg EJ, Konings IB, van der Sluijs P, Mallmann R, Oksche A, Deen PM: Lack of arginine vasopressin-induced phosphorylation of aquaporin-2 mutant AQP2-R254L explains dominant nephrogenic diabetes insipidus. J Am Soc Nephrol. 2005 Oct;16(10):2872-80. Epub 2005 Aug 24. 16120822
  19. Cheong HI, Cho SJ, Zheng SH, Cho HY, Ha IS, Choi Y: Two novel mutations in the aquaporin 2 gene in a girl with congenital nephrogenic diabetes insipidus. J Korean Med Sci. 2005 Dec;20(6):1076-8. 16361827
  20. Carroll P, Al-Mojalli H, Al-Abbad A, Al-Hassoun I, Al-Hamed M, Al-Amr R, Butt AI, Meyer BF: Novel mutations underlying nephrogenic diabetes insipidus in Arab families. Genet Med. 2006 Jul;8(7):443-7. 16845277
  21. Savelkoul PJ, De Mattia F, Li Y, Kamsteeg EJ, Konings IB, van der Sluijs P, Deen PM: p.R254Q mutation in the aquaporin-2 water channel causing dominant nephrogenic diabetes insipidus is due to a lack of arginine vasopressin-induced phosphorylation. Hum Mutat. 2009 Oct;30(10):E891-903. doi: 10.1002/humu.21082. 19585583
  22. Kamsteeg EJ, Stoffels M, Tamma G, Konings IB, Deen PM: Repulsion between Lys258 and upstream arginines explains the missorting of the AQP2 mutant p.Glu258Lys in nephrogenic diabetes insipidus. Hum Mutat. 2009 Oct;30(10):1387-96. doi: 10.1002/humu.21068. 19701945
  23. Park YJ, Baik HW, Cheong HI, Kang JH: Congenital nephrogenic diabetes insipidus with a novel mutation in the aquaporin 2 gene. Biomed Rep. 2014 Jul;2(4):596-598. Epub 2014 May 19. 24944815