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Q62773 (S28A2_RAT) Reviewed, UniProtKB/Swiss-Prot

Last modified April 3, 2013. Version 91. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Sodium/nucleoside cotransporter 2
Alternative name(s):
Concentrative nucleoside transporter 2
Short name=CNT 2
Short name=rCNT2
Na(+)/nucleoside cotransporter 2
Sodium-coupled nucleoside transporter 2
Sodium/purine nucleoside cotransporter
Short name=SPNT
Solute carrier family 28 member 2
Gene names
Name:Slc28a2
Synonyms:Cnt2, Spnt
OrganismRattus norvegicus (Rat) [Reference proteome]
Taxonomic identifier10116 [NCBI]
Taxonomic lineageEukaryota › Metazoa › Chordata › Craniata › Vertebrata › Euteleostomi › Mammalia › Eutheria › Euarchontoglires › Glires › Rodentia › Sciurognathi › Muroidea › Muridae › Murinae › Rattus

Protein attributes

Sequence length659 AA.
Sequence statusComplete.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Sodium-dependent and purine-selective. Exhibits the transport characteristics of the nucleoside transport system cif or N1 subtype (N1/cif) (selective for purine nucleosides and uridine). Accepts purine, analogs of purine nucleosides and uridine, and exhibits high affinity for adenosine.

Enzyme regulation

Inhibited by formycin B, partially inhibited by purine analog ara-A.

Subcellular location

Membrane; Multi-pass membrane protein.

Tissue specificity

Expressed in liver (in bile canalicular membrane vesicles (CMV) but not in sinusoidal vesicles), jejunum, spleen and heart. Also expressed in brain and skeletal muscle. Not expressed in kidney, muscle and lung.

Sequence similarities

Belongs to the concentrative nucleoside transporter (CNT) (TC 2.A.41) family. [View classification]

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 659659Sodium/nucleoside cotransporter 2
PRO_0000070452

Regions

Transmembrane81 – 10121Helical; Potential
Transmembrane105 – 12420Helical; Potential
Transmembrane149 – 16719Helical; Potential
Transmembrane173 – 19321Helical; Potential
Transmembrane201 – 22121Helical; Potential
Transmembrane234 – 25421Helical; Potential
Transmembrane261 – 28121Helical; Potential
Transmembrane296 – 31520Helical; Potential
Transmembrane337 – 35620Helical; Potential
Transmembrane363 – 38220Helical; Potential
Transmembrane424 – 44421Helical; Potential
Transmembrane455 – 47521Helical; Potential
Transmembrane530 – 55021Helical; Potential
Transmembrane568 – 58821Helical; Potential

Experimental info

Sequence conflict4191A → G in AAD00159. Ref.2
Sequence conflict5221I → V in AAD00159. Ref.2

Sequences

Sequence LengthMass (Da)Tools
Q62773 [UniParc].

Last modified November 1, 1996. Version 1.
Checksum: 0CE9B49E5D1FE453

FASTA65972,615
        10         20         30         40         50         60 
MAKSEGRKSA SQDTSENGME NPGLELMEVG NLEQGKTLEE VTQGHSLKDG LGHSSLWRRI 

        70         80         90        100        110        120 
LQPFTKARSF YQRHAGLFKK ILLGLLCLAY AAYLLAACIL NFRRALALFV ITCLVIFILA 

       130        140        150        160        170        180 
CHFLKKFFAK KSIRCLKPLK NTRLRLWLKR VFMGAAVVGL ILWLALDTAQ RPEQLISFAG 

       190        200        210        220        230        240 
ICMFILILFA CSKHHSAVSW RTVFWGLGLQ FVFGILVIRT EPGFNAFQWL GDQIQIFLAY 

       250        260        270        280        290        300 
TVEGSSFVFG DTLVQSVFAF QSLPIIIFFG CVMSILYYLG LVQWVIQKIA WFLQITMGTT 

       310        320        330        340        350        360 
AAETLAVAGN IFVGMTEAPL LIRPYLADMT LSEIHAVMTG GFATIAGTVL GAFISFGIDA 

       370        380        390        400        410        420 
SSLISASVMA APCALALSKL VYPEVEESKF KSKEGVKLPR GEERNILEAA SNGATDAIAL 

       430        440        450        460        470        480 
VANVAANLIA FLAVLAFINS TLSWLGEMVD IHGLTFQVIC SYVLRPMVFM MGVQWADCPL 

       490        500        510        520        530        540 
VAEIVGVKFF INEFVAYQQL SQYKNKRLSG VEEWINGEKQ WISVKAEIIA TFSLCGFANL 

       550        560        570        580        590        600 
TSIGITLGGL TSMVPQRKSD LCKLVVRALF TGACVSFISA CMAGILYVPR GAETDCVSFL 

       610        620        630        640        650 
NTNFTNRTYE TYVCCRELFQ STLLNGTNMP SFSGPWQDKE SSLRNLAKCC DLYTSTVCA

« Hide

References

[1]"Primary structure and functional expression of a cDNA encoding the bile canalicular, purine-specific Na(+)-nucleoside cotransporter."
Che M., Ortiz D.F., Arias I.M.
J. Biol. Chem. 270:13596-13599(1995) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Strain: Wistar.
Tissue: Liver.
[2]"Transport of adenosine by recombinant purine- and pyrimidine-selective sodium/nucleoside cotransporters from rat jejunum expressed in Xenopus laevis oocytes."
Yao S.Y., Ng A.M., Ritzel M.W., Gati W.P., Cass C.E., Young J.D.
Mol. Pharmacol. 50:1529-1535(1996) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Strain: Sprague-Dawley.
Tissue: Jejunum.
[3]"A nucleoside transporter is functionally linked to ectonucleotidases in rat liver canalicular membrane."
Che M., Nishida T., Gatmaitan Z., Arias I.M.
J. Biol. Chem. 267:9684-9688(1992) [PubMed] [Europe PMC] [Abstract]
Cited for: CHARACTERIZATION.
Tissue: Liver.
+Additional computationally mapped references.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		U25055 mRNA. Translation: AAA80640.1.
U66723 mRNA. Translation: AAD00159.1.
IPIIPI00208247.
PIRA57532.
RefSeqNP_113852.1. NM_031664.1.
UniGeneRn.10140.

3D structure databases

ModBaseSearch...

Protein family/group databases

TCDB2.A.41.2.1. concentrative nucleoside transporter (CNT) family.

PTM databases

PhosphoSiteQ62773.

Proteomic databases

PRIDEQ62773.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

GeneID60423.
KEGGrno:60423.
UCSCRGD:61840. rat.

Organism-specific databases

CTD9153.
RGD61840. Slc28a2.

Phylogenomic databases

eggNOGCOG1972.
HOGENOMHOG000267658.
HOVERGENHBG054073.
InParanoidQ62773.
KOK11536.
OrthoDBEOG4V170B.

Gene expression databases

ArrayExpressQ62773.
GenevestigatorQ62773.
GermOnlineENSRNOG00000018204. Rattus norvegicus.

Family and domain databases

InterProIPR008276. C_nuclsd_transpt.
IPR018270. C_nuclsd_transpt_met_bac.
IPR011657. Nucleos_tra2_C.
IPR011642. Nucleoside_recog_Gate.
IPR002668. Nuclsd_transpt2.
[Graphical view]
PANTHERPTHR10590. PTHR10590. 1 hit.
PfamPF07670. Gate. 1 hit.
PF07662. Nucleos_tra2_C. 1 hit.
PF01773. Nucleos_tra2_N. 1 hit.
[Graphical view]
TIGRFAMsTIGR00804. nupC. 1 hit.
ProtoNetSearch...

Other

ChEMBLCHEMBL1287616.
NextBio612142.

Entry information

Entry nameS28A2_RAT
AccessionPrimary (citable) accession number: Q62773
Secondary accession number(s): Q9QWI3
Entry history
Integrated into UniProtKB/Swiss-Prot: December 1, 2000
Last sequence update: November 1, 1996
Last modified: April 3, 2013
This is version 91 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programChordata Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

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