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P47959 (HPRT_MERUN) Reviewed, UniProtKB/Swiss-Prot

Last modified June 11, 2014. Version 69. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

Names and origin

Protein namesRecommended name:
Hypoxanthine-guanine phosphoribosyltransferase

Short name=HGPRT
Short name=HGPRTase
EC=2.4.2.8
Gene names
Name:HPRT1
Synonyms:HPRT
OrganismMeriones unguiculatus (Mongolian jird) (Mongolian gerbil)
Taxonomic identifier10047 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresGliresRodentiaSciurognathiMuroideaMuridaeGerbillinaeMeriones

Protein attributes

Sequence length218 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is further processed into a mature form.
Protein existenceEvidence at transcript level

General annotation (Comments)

Function

Converts guanine to guanosine monophosphate, and hypoxanthine to inosine monophosphate. Transfers the 5-phosphoribosyl group from 5-phosphoribosylpyrophosphate onto the purine. Plays a central role in the generation of purine nucleotides through the purine salvage pathway By similarity.

Catalytic activity

IMP + diphosphate = hypoxanthine + 5-phospho-alpha-D-ribose 1-diphosphate.

GMP + diphosphate = guanine + 5-phospho-alpha-D-ribose 1-diphosphate.

Cofactor

Binds 2 magnesium ions per subunit. The magnesium ions are essentially bound to the substrate and have few direct interactions with the protein By similarity.

Pathway

Purine metabolism; IMP biosynthesis via salvage pathway; IMP from hypoxanthine: step 1/1.

Subunit structure

Homotetramer By similarity.

Subcellular location

Cytoplasm.

Sequence similarities

Belongs to the purine/pyrimidine phosphoribosyltransferase family.

Ontologies

Keywords
   Biological processPurine salvage
   Cellular componentCytoplasm
   LigandMagnesium
Metal-binding
Nucleotide-binding
   Molecular functionGlycosyltransferase
Transferase
   PTMAcetylation
Gene Ontology (GO)
   Biological_processGMP catabolic process

Inferred from sequence or structural similarity. Source: UniProtKB

IMP metabolic process

Inferred from sequence or structural similarity. Source: UniProtKB

IMP salvage

Inferred from electronic annotation. Source: UniProtKB-UniPathway

guanine salvage

Inferred from sequence or structural similarity. Source: UniProtKB

hypoxanthine metabolic process

Inferred from sequence or structural similarity. Source: UniProtKB

hypoxanthine salvage

Inferred from sequence or structural similarity. Source: UniProtKB

positive regulation of dopamine metabolic process

Inferred from sequence or structural similarity. Source: UniProtKB

protein homotetramerization

Inferred from sequence or structural similarity. Source: UniProtKB

purine nucleotide biosynthetic process

Inferred from sequence or structural similarity. Source: UniProtKB

purine ribonucleoside salvage

Inferred from sequence or structural similarity. Source: UniProtKB

   Cellular_componentcytoplasm

Inferred from sequence or structural similarity. Source: UniProtKB

   Molecular_functionguanine phosphoribosyltransferase activity

Inferred from sequence or structural similarity. Source: UniProtKB

hypoxanthine phosphoribosyltransferase activity

Inferred from sequence or structural similarity. Source: UniProtKB

magnesium ion binding

Inferred from sequence or structural similarity. Source: UniProtKB

nucleotide binding

Inferred from electronic annotation. Source: UniProtKB-KW

protein homodimerization activity

Inferred from sequence or structural similarity. Source: UniProtKB

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Initiator methionine11Removed By similarity
Chain2 – 218217Hypoxanthine-guanine phosphoribosyltransferase
PRO_0000139587

Regions

Nucleotide binding134 – 1429GMP By similarity
Nucleotide binding186 – 1883GMP By similarity

Sites

Active site1381Proton acceptor By similarity
Metal binding1941Magnesium By similarity
Binding site691GMP By similarity
Binding site1661GMP By similarity
Binding site1941GMP; via carbonyl oxygen By similarity

Amino acid modifications

Modified residue21N-acetylalanine By similarity
Modified residue1031N6-acetyllysine By similarity

Sequences

Sequence LengthMass (Da)Tools
P47959 [UniParc].

Last modified January 23, 2007. Version 2.
Checksum: 589C500AD78CE9FC

FASTA21824,538
        10         20         30         40         50         60 
MATRSPSIVI GDDEPGYDLD LFCIPKHYAE DLEKVFIPHG LIMDRTERLA RDVMKEMGGH 

        70         80         90        100        110        120 
HIVALCVLKG GYKFFADLLD YIKSLNRNTD RSIPMTVDFI RLKSYCNDQS TGDIKVIGGD 

       130        140        150        160        170        180 
DLSALTGKNV LIVEDIIDTG KTMQTLLSLV QKYSPKMVKV ASLLVKRTPR SVGYRPDFVG 

       190        200        210 
FEIPDKFVVG YALDYNEYFR DLNHVCVISE SGKAKYKA 

« Hide

References

[1]"Hypoxanthine phosphoribosyltransferase cDNA in gerbils (Meriones unguiculatus)."
Mai Z., Horohov D.W., Klei T.R.
Lab. Anim. Sci. 48:179-183(1998) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [MRNA].
Tissue: Spleen.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
L37778 mRNA. Translation: AAA65676.1.

3D structure databases

ProteinModelPortalP47959.
SMRP47959. Positions 5-218.
ModBaseSearch...
MobiDBSearch...

Proteomic databases

PRIDEP47959.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Phylogenomic databases

HOVERGENHBG000242.

Enzyme and pathway databases

UniPathwayUPA00591; UER00648.

Family and domain databases

Gene3D3.40.50.2020. 1 hit.
InterProIPR005904. Hxn_phspho_trans.
IPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
[Graphical view]
PfamPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMSSF53271. SSF53271. 1 hit.
TIGRFAMsTIGR01203. HGPRTase. 1 hit.
PROSITEPS00103. PUR_PYR_PR_TRANSFER. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameHPRT_MERUN
AccessionPrimary (citable) accession number: P47959
Entry history
Integrated into UniProtKB/Swiss-Prot: February 1, 1996
Last sequence update: January 23, 2007
Last modified: June 11, 2014
This is version 69 of the entry and version 2 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

PATHWAY comments

Index of metabolic and biosynthesis pathways