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Database: UniProt
Entry: P47862
LinkDB: P47862
Original site: P47862 
ID   AQP3_RAT                Reviewed;         292 AA.
AC   P47862; A0JPL5;
DT   01-FEB-1996, integrated into UniProtKB/Swiss-Prot.
DT   01-FEB-1996, sequence version 1.
DT   27-MAR-2024, entry version 138.
DE   RecName: Full=Aquaporin-3;
DE            Short=AQP-3;
DE   AltName: Full=31.4 kDa water channel protein;
DE   AltName: Full=Aquaglyceroporin-3;
GN   Name=Aqp3;
OS   Rattus norvegicus (Rat).
OC   Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi; Mammalia;
OC   Eutheria; Euarchontoglires; Glires; Rodentia; Myomorpha; Muroidea; Muridae;
OC   Murinae; Rattus.
OX   NCBI_TaxID=10116;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [MRNA], FUNCTION, SUBCELLULAR LOCATION, AND TISSUE
RP   SPECIFICITY.
RC   STRAIN=Sprague-Dawley; TISSUE=Kidney;
RX   PubMed=7526388; DOI=10.1073/pnas.91.23.10997;
RA   Echevarria M., Windhager E.E., Tate S.S., Frindt G.;
RT   "Cloning and expression of AQP3, a water channel from the medullary
RT   collecting duct of rat kidney.";
RL   Proc. Natl. Acad. Sci. U.S.A. 91:10997-11001(1994).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA].
RC   TISSUE=Brain;
RX   PubMed=15489334; DOI=10.1101/gr.2596504;
RG   The MGC Project Team;
RT   "The status, quality, and expansion of the NIH full-length cDNA project:
RT   the Mammalian Gene Collection (MGC).";
RL   Genome Res. 14:2121-2127(2004).
RN   [3]
RP   NUCLEOTIDE SEQUENCE [MRNA] OF 4-292, FUNCTION, SUBCELLULAR LOCATION,
RP   ACTIVITY REGULATION, AND TISSUE SPECIFICITY.
RC   TISSUE=Kidney;
RX   PubMed=7517548; DOI=10.1073/pnas.91.14.6269;
RA   Ishibashi K., Sasaki S., Fushimi K., Uchida S., Kuwahara M., Saito H.,
RA   Furukawa T., Nakajima K., Yamaguchi Y., Gojobori T., Marumo F.;
RT   "Molecular cloning and expression of a member of the aquaporin family with
RT   permeability to glycerol and urea in addition to water expressed at the
RT   basolateral membrane of kidney collecting duct cells.";
RL   Proc. Natl. Acad. Sci. U.S.A. 91:6269-6273(1994).
CC   -!- FUNCTION: Water channel required to promote glycerol permeability and
CC       water transport across cell membranes (PubMed:7526388, PubMed:7517548).
CC       Acts as a glycerol transporter in skin and plays an important role in
CC       regulating SC (stratum corneum) and epidermal glycerol content.
CC       Involved in skin hydration, wound healing, and tumorigenesis. Provides
CC       kidney medullary collecting duct with high permeability to water,
CC       thereby permitting water to move in the direction of an osmotic
CC       gradient. Slightly permeable to urea and may function as a water and
CC       urea exit mechanism in antidiuresis in collecting duct cells. It may
CC       play an important role in gastrointestinal tract water transport and in
CC       glycerol metabolism (By similarity). {ECO:0000250|UniProtKB:Q8R2N1,
CC       ECO:0000269|PubMed:7517548, ECO:0000269|PubMed:7526388}.
CC   -!- ACTIVITY REGULATION: Channel activity is inhibited by mercury ions.
CC       {ECO:0000269|PubMed:7517548}.
CC   -!- SUBCELLULAR LOCATION: Cell membrane {ECO:0000269|PubMed:7517548,
CC       ECO:0000269|PubMed:7526388}; Multi-pass membrane protein {ECO:0000305}.
CC       Basolateral cell membrane {ECO:0000269|PubMed:7517548}; Multi-pass
CC       membrane protein {ECO:0000305}.
CC   -!- TISSUE SPECIFICITY: Detected in kidney medulla and papilla, in
CC       collecting duct cells (PubMed:7526388, PubMed:7517548). Detected in
CC       colon (PubMed:7517548). {ECO:0000269|PubMed:7517548,
CC       ECO:0000269|PubMed:7526388}.
CC   -!- DOMAIN: Aquaporins contain two tandem repeats each containing three
CC       membrane-spanning domains and a pore-forming loop with the signature
CC       motif Asn-Pro-Ala (NPA). {ECO:0000250|UniProtKB:Q96PS8}.
CC   -!- SIMILARITY: Belongs to the MIP/aquaporin (TC 1.A.8) family.
CC       {ECO:0000305}.
CC   -!- SEQUENCE CAUTION:
CC       Sequence=BAA04559.1; Type=Erroneous initiation; Note=Truncated N-terminus.; Evidence={ECO:0000305};
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DR   EMBL; L35108; AAA53652.1; -; mRNA.
DR   EMBL; BC127490; AAI27491.1; -; mRNA.
DR   EMBL; D17695; BAA04559.1; ALT_INIT; mRNA.
DR   PIR; I59266; I59266.
DR   RefSeq; NP_113891.1; NM_031703.1.
DR   AlphaFoldDB; P47862; -.
DR   SMR; P47862; -.
DR   STRING; 10116.ENSRNOP00000013803; -.
DR   TCDB; 1.A.8.9.1; the major intrinsic protein (mip) family.
DR   GlyCosmos; P47862; 1 site, No reported glycans.
DR   GlyGen; P47862; 1 site.
DR   PhosphoSitePlus; P47862; -.
DR   PaxDb; 10116-ENSRNOP00000013803; -.
DR   Ensembl; ENSRNOT00055028604; ENSRNOP00055023042; ENSRNOG00055016831.
DR   Ensembl; ENSRNOT00060006225; ENSRNOP00060004631; ENSRNOG00060003749.
DR   Ensembl; ENSRNOT00065006920; ENSRNOP00065004733; ENSRNOG00065004787.
DR   GeneID; 65133; -.
DR   KEGG; rno:65133; -.
DR   UCSC; RGD:68428; rat.
DR   AGR; RGD:68428; -.
DR   CTD; 360; -.
DR   RGD; 68428; Aqp3.
DR   eggNOG; KOG0224; Eukaryota.
DR   InParanoid; P47862; -.
DR   OrthoDB; 5490746at2759; -.
DR   PhylomeDB; P47862; -.
DR   TreeFam; TF313173; -.
DR   Reactome; R-RNO-432040; Vasopressin regulates renal water homeostasis via Aquaporins.
DR   Reactome; R-RNO-432047; Passive transport by Aquaporins.
DR   PRO; PR:P47862; -.
DR   Proteomes; UP000002494; Unplaced.
DR   GO; GO:0016323; C:basolateral plasma membrane; IDA:UniProtKB.
DR   GO; GO:0005911; C:cell-cell junction; ISO:RGD.
DR   GO; GO:0005737; C:cytoplasm; ISO:RGD.
DR   GO; GO:0005886; C:plasma membrane; ISO:RGD.
DR   GO; GO:0015254; F:glycerol channel activity; IDA:UniProtKB.
DR   GO; GO:0042802; F:identical protein binding; ISO:RGD.
DR   GO; GO:0015166; F:polyol transmembrane transporter activity; IDA:UniProtKB.
DR   GO; GO:0015204; F:urea transmembrane transporter activity; IBA:GO_Central.
DR   GO; GO:0015250; F:water channel activity; IDA:UniProtKB.
DR   GO; GO:0071456; P:cellular response to hypoxia; ISO:RGD.
DR   GO; GO:0051649; P:establishment of localization in cell; ISO:RGD.
DR   GO; GO:0015793; P:glycerol transmembrane transport; IDA:UniProtKB.
DR   GO; GO:0042476; P:odontogenesis; ISO:RGD.
DR   GO; GO:0015791; P:polyol transmembrane transport; IDA:UniProtKB.
DR   GO; GO:0002684; P:positive regulation of immune system process; ISO:RGD.
DR   GO; GO:0070295; P:renal water absorption; ISO:RGD.
DR   GO; GO:0002931; P:response to ischemia; ISO:RGD.
DR   GO; GO:0032526; P:response to retinoic acid; ISO:RGD.
DR   GO; GO:0015840; P:urea transport; ISO:RGD.
DR   GO; GO:0006833; P:water transport; IDA:UniProtKB.
DR   CDD; cd00333; MIP; 1.
DR   Gene3D; 1.20.1080.10; Glycerol uptake facilitator protein; 1.
DR   InterPro; IPR023271; Aquaporin-like.
DR   InterPro; IPR023275; Aquaporin_3.
DR   InterPro; IPR000425; MIP.
DR   InterPro; IPR022357; MIP_CS.
DR   NCBIfam; TIGR00861; MIP; 1.
DR   PANTHER; PTHR43829; AQUAPORIN OR AQUAGLYCEROPORIN RELATED; 1.
DR   PANTHER; PTHR43829:SF7; AQUAPORIN-3; 1.
DR   Pfam; PF00230; MIP; 1.
DR   PRINTS; PR02015; AQUAPORIN3.
DR   PRINTS; PR00783; MINTRINSICP.
DR   SUPFAM; SSF81338; Aquaporin-like; 1.
DR   PROSITE; PS00221; MIP; 1.
PE   2: Evidence at transcript level;
KW   Cell membrane; Glycoprotein; Membrane; Reference proteome; Repeat;
KW   Transmembrane; Transmembrane helix; Transport.
FT   CHAIN           1..292
FT                   /note="Aquaporin-3"
FT                   /id="PRO_0000063945"
FT   TOPO_DOM        1..26
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        27..47
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        48..53
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        54..74
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        75..78
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   INTRAMEM        79..92
FT                   /note="Discontinuously helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        93..98
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        99..123
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        124..157
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        158..178
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        179..188
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        189..208
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   INTRAMEM        209..227
FT                   /note="Discontinuously helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        228..244
FT                   /note="Extracellular"
FT                   /evidence="ECO:0000305"
FT   TRANSMEM        245..265
FT                   /note="Helical"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   TOPO_DOM        266..292
FT                   /note="Cytoplasmic"
FT                   /evidence="ECO:0000305"
FT   MOTIF           83..85
FT                   /note="NPA 1"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   MOTIF           215..217
FT                   /note="NPA 2"
FT                   /evidence="ECO:0000250|UniProtKB:Q96PS8"
FT   CARBOHYD        141
FT                   /note="N-linked (GlcNAc...) asparagine"
FT                   /evidence="ECO:0000255"
FT   CONFLICT        273
FT                   /note="P -> L (in Ref. 2; AAI27491)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   292 AA;  31384 MW;  41D9D3119DBA55AD CRC64;
     MGRQKELMNR CGEMLHIRYR LLRQALAECL GTLILVMFGC GSVAQVVLSR GTHGGFLTIN
     LAFGFAVTLA ILVAGQVSGA HLNPAVTFAM CFLAREPWIK LPIYTLAQTL GAFLGAGIVF
     GLYYDAIWAF AGNELVVSGP NGTAGIFATY PSGHLDMVNG FFDQFIGTAA LIVCVLAIVD
     PYNNPVPRGL EAFTVGLVVL VIGTSMGFNS GYAVNPARDF GPRLFTALAG WGSEVFTTGQ
     NWWWVPIVSP LLGSIGGVFV YQLMIGCHLE QPPPSTEAEN VKLAHMKHKE QI
//
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