Helen Frankenthaler Foundation

Kidney water channel research reagent

UniProt

function

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. Could also be permeable to glycerol (By similarity).

Gene Ontology

Gene Ontology (GO) annotations organized by slimming set.

Slimming set:

Cell color indicative of number of GO terms

AspectTerm
Molecular Functionglycerol transmembrane transporter activity
Molecular Functionwater channel activity
Biological Processactin filament organization
Biological Processcellular response to copper ion
Biological Processcellular response to mercury ion
Biological Processcellular response to water deprivation
Biological Processmetanephric collecting duct development
Biological Processprotein homotetramerization
Biological Processrenal water transport
Biological Processwater transport

Access the complete set of GO annotations on QuickGO

Keywords

  • Biological process

Enzyme and pathway databases

    • R-BTA-432040 Vasopressin regulates renal water homeostasis via Aquaporins
    • R-BTA-432047 Passive transport by Aquaporins

Protein names

  • Recommended name

Aquaporin-2

  • Short name

AQP-2

  • Alternative names
    • ADH water channel
    • Aquaporin-CD (AQP-CD)
    • Collecting duct water channel protein
    • WCH-CD
    • Water channel protein for renal collecting duct

Gene names

    • Name

AQP2

Organism names

  • Taxonomic identifier
  • Organism
  • Strain
    • Hereford

Taxonomic lineage

Eukaryota > Metazoa > Chordata > Craniata > Vertebrata > Euteleostomi > Mammalia > Eutheria > Laurasiatheria > Artiodactyla > Ruminantia > Pecora > Bovidae > Bovinae > Bos

Accessions

  • Primary accession

P79099

  • Secondary accessions
    • A7MBE5

Proteomes

    • Identifier
    • Component

Chromosome 5

Organism-specific databases

Note: Shuttles from vesicles to the apical membrane. Vasopressin-regulated phosphorylation is required for translocation to the apical cell membrane. PLEKHA8/FAPP2 is required to transport AQP2 from the TGN to sites where AQP2 is phosphorylated.

Features

Showing features for topological domain, transmembrane, intramembrane.

TypeIDPosition(s)Description
Topological domain1-11Cytoplasmic
Transmembrane12-32Helical
Topological domain33-40Extracellular
Transmembrane41-59Helical
Topological domain60-64Cytoplasmic
Intramembrane65-74Discontinuously helical
Topological domain75-85Cytoplasmic
Transmembrane86-107Helical
Topological domain108-127Extracellular
Transmembrane128-148Helical
Topological domain149-156Cytoplasmic
Transmembrane157-176Helical
Topological domain177-180Extracellular
Intramembrane181-193Discontinuously helical
Topological domain194-201Extracellular
Transmembrane202-222Helical
Topological domain223-271Cytoplasmic

Keywords

  • Cellular component

Gene expression databases

    • ENSBTAG00000008374 Expressed in adult mammalian kidney and 17 other cell types or tissues

Subunit

Homotetramer.

Protein-protein interaction databases

    • P79099 119 interactors

Features

Showing features for motif, region, compositional bias.

TypeIDPosition(s)Description
Motif68-70NPA 1
Motif184-186NPA 2
Region251-271Disordered
Compositional bias261-271Polar residues

Domain

Aquaporins contain two tandem repeats each containing three membrane-spanning domains and a pore-forming loop with the signature motif Asn-Pro-Ala (NPA).

Sequence similarities

Keywords
  • Domain
Family and domain databases
  • View the Phylogenomic databases for this entry within the Similar Proteins section.
  • View all family and domain features for this entry's canonical sequence in the UniParc Feature Viewer.
    • cd00333 MIP 1 hit
    • 1.20.1080.10:FF:000003 Lens fiber major intrinsic 1 hit
    • 1.20.1080.10 Glycerol uptake facilitator protein 1 hit
    • TIGR00861 MIP 1 hit
    • PTHR19139 AQUAPORIN TRANSPORTER 1 hit
    • PTHR19139:SF45 AQUAPORIN-2 1 hit
    • PR02014 AQUAPORIN2
    • PR00783 MINTRINSICP
    • SSF81338 Aquaporin-like 1 hit

Sequence status

Complete

Length

271

Mass (Da)

28,890

Last updated

2007-11-13 v2

MD5 Checksum

27CC8F41DCFAE26F594581AC6890CB0F

MWELRSIAFSRAVLAEFLATLLFVFFGLGSALNWPQALPSVLQIAMAFGLAIGTLVQALGHVSGAHINPAVTVACLVGCHVSFLRAVFYVAAQLLGAVAGAALLHEITPPAIRGDLAVNALNNNSTAGQAVTVELFLTLQLVLCIFASTDERRGDNVGTPALSIGFSVALGHLLGIHYTGCSMNPARSLAPAIVTGKFDDHWVFWIGPLVGAIVASLLYNYVLFPPAKSLSERLAVLKGLEPDTDWEEREVRRRQSVELHSPQSLPRGSKA

Features

Showing features for compositional bias.

TypeIDPosition(s)Description
Compositional bias261-271Polar residues

Keywords

  • Technical term

Sequence databases

Nucleotide SequenceProtein SequenceMolecule TypeStatus
BC151512 EMBL· GenBank· DDBJAAI51513.1 EMBL· GenBank· DDBJmRNA
Y10633 EMBL· GenBank· DDBJCAA71658.1 EMBL· GenBank· DDBJGenomic DNA
Genome annotation databases
UniRef clusters
Orthologs & paralogs
Phylogenomic databases
    • KOG0223 Eukaryota

Disclaimer

Any medical or genetic information present in this entry is provided for research, educational and informational purposes only. It is not in any way intended to be used as a substitute for professional medical advice, diagnosis, treatment or care. Our staff consists of biologists and biochemists that are not trained to give medical advice.