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P45078

- HPRT_HAEIN

UniProt

P45078 - HPRT_HAEIN

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Protein

Hypoxanthine phosphoribosyltransferase

Gene
hpt, HI_1153
Organism
Haemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
Status
Reviewed - Annotation score: 4 out of 5 - Protein inferred from homologyi

Functioni

Acts preferentially on hypoxanthine; has very low activity towards guanine. Inactive towards xanthine By similarity.

Catalytic activityi

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

Cofactori

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.

Pathwayi

Sites

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Active sitei105 – 1051Proton acceptor By similarity
Binding sitei133 – 1331IMP By similarity
Binding sitei155 – 1551IMP; via carbonyl oxygen By similarity
Metal bindingi161 – 1611Magnesium By similarity

Regions

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Nucleotide bindingi101 – 11010IMP By similarity
Nucleotide bindingi160 – 1612IMP By similarity

GO - Molecular functioni

  1. guanine phosphoribosyltransferase activity Source: UniProtKB-EC
  2. hypoxanthine phosphoribosyltransferase activity Source: UniProtKB-EC
  3. metal ion binding Source: UniProtKB-KW
  4. nucleotide binding Source: UniProtKB-KW

GO - Biological processi

  1. IMP salvage Source: UniProtKB-UniPathway
  2. purine ribonucleoside salvage Source: UniProtKB-KW
Complete GO annotation...

Keywords - Molecular functioni

Glycosyltransferase, Transferase

Keywords - Biological processi

Purine salvage

Keywords - Ligandi

Magnesium, Metal-binding, Nucleotide-binding

Enzyme and pathway databases

UniPathwayiUPA00591; UER00648.

Names & Taxonomyi

Protein namesi
Recommended name:
Hypoxanthine phosphoribosyltransferase (EC:2.4.2.8)
Short name:
HPRT
Gene namesi
Name:hpt
Ordered Locus Names:HI_1153
OrganismiHaemophilus influenzae (strain ATCC 51907 / DSM 11121 / KW20 / Rd)
Taxonomic identifieri71421 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPasteurellalesPasteurellaceaeHaemophilus
ProteomesiUP000000579: Chromosome

Subcellular locationi

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 179179Hypoxanthine phosphoribosyltransferasePRO_0000139634Add
BLAST

Interactioni

Subunit structurei

Homotetramer.

Protein-protein interaction databases

STRINGi71421.HI1153.

Structurei

3D structure databases

ProteinModelPortaliP45078.
SMRiP45078. Positions 3-177.

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiCOG0634.
KOiK00760.
OMAiVDFMTVS.
OrthoDBiEOG693GNP.
PhylomeDBiP45078.

Family and domain databases

Gene3Di3.40.50.2020. 1 hit.
InterProiIPR005904. Hxn_phspho_trans.
IPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
[Graphical view]
PfamiPF00156. Pribosyltran. 1 hit.
[Graphical view]
SUPFAMiSSF53271. SSF53271. 1 hit.
TIGRFAMsiTIGR01203. HGPRTase. 1 hit.
PROSITEiPS00103. PUR_PYR_PR_TRANSFER. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

P45078-1 [UniParc]FASTAAdd to Basket

« Hide

MKKHHVDVLI SENDVHARIA ELGAQITKFY QEKQIDNLVV VGLLRGSFMF    50
MADIVRQINL PVEIEFMTTS SYGTGMTTNH DVRITKDLDG DIKGKHVLIV 100
EDIIDTGYTL EKVRDILNLR EPASLTICTL LDKPSRREVE VPVEWVGFEI 150
PDEFVVGYGI DYAQRHRNLG YIGKVVLEE 179
Length:179
Mass (Da):20,370
Last modified:November 1, 1995 - v1
Checksum:i65F8C1314942BFE7
GO

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
L42023 Genomic DNA. Translation: AAC22808.1.
PIRiD64168.
RefSeqiNP_439311.1. NC_000907.1.

Genome annotation databases

EnsemblBacteriaiAAC22808; AAC22808; HI_1153.
GeneIDi950117.
KEGGihin:HI1153.
PATRICi20190981. VBIHaeInf48452_1203.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBL
GenBank
DDBJ
Links Updated
L42023 Genomic DNA. Translation: AAC22808.1 .
PIRi D64168.
RefSeqi NP_439311.1. NC_000907.1.

3D structure databases

ProteinModelPortali P45078.
SMRi P45078. Positions 3-177.
ModBasei Search...
MobiDBi Search...

Protein-protein interaction databases

STRINGi 71421.HI1153.

Protocols and materials databases

Structural Biology Knowledgebase Search...

Genome annotation databases

EnsemblBacteriai AAC22808 ; AAC22808 ; HI_1153 .
GeneIDi 950117.
KEGGi hin:HI1153.
PATRICi 20190981. VBIHaeInf48452_1203.

Phylogenomic databases

eggNOGi COG0634.
KOi K00760.
OMAi VDFMTVS.
OrthoDBi EOG693GNP.
PhylomeDBi P45078.

Enzyme and pathway databases

UniPathwayi UPA00591 ; UER00648 .

Family and domain databases

Gene3Di 3.40.50.2020. 1 hit.
InterProi IPR005904. Hxn_phspho_trans.
IPR000836. PRibTrfase_dom.
IPR029057. PRTase-like.
[Graphical view ]
Pfami PF00156. Pribosyltran. 1 hit.
[Graphical view ]
SUPFAMi SSF53271. SSF53271. 1 hit.
TIGRFAMsi TIGR01203. HGPRTase. 1 hit.
PROSITEi PS00103. PUR_PYR_PR_TRANSFER. 1 hit.
[Graphical view ]
ProtoNeti Search...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: ATCC 51907 / DSM 11121 / KW20 / Rd.

Entry informationi

Entry nameiHPRT_HAEIN
AccessioniPrimary (citable) accession number: P45078
Entry historyi
Integrated into UniProtKB/Swiss-Prot: November 1, 1995
Last sequence update: November 1, 1995
Last modified: July 9, 2014
This is version 94 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. Haemophilus influenzae
    Haemophilus influenzae (strain Rd): entries and gene names
  2. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  3. SIMILARITY comments
    Index of protein domains and families

External Data

Dasty 3

Similar proteinsi