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Protein

Hypoxanthine-guanine phosphoribosyltransferase

Gene

hpt

Organism
Rhodobacter capsulatus (strain ATCC BAA-309 / NBRC 16581 / SB1003)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalytic activityi

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

Cofactori

Mg2+By similarityNote: 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: IMP biosynthesis via salvage pathway

This protein is involved in step 1 of the subpathway that synthesizes IMP from hypoxanthine.
Proteins known to be involved in this subpathway in this organism are:
  1. Hypoxanthine-guanine phosphoribosyltransferase (hpt)
This subpathway is part of the pathway IMP biosynthesis via salvage pathway, which is itself part of Purine metabolism.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes IMP from hypoxanthine, the pathway IMP biosynthesis via salvage pathway and in Purine metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei105Proton acceptorBy similarity1
Binding sitei133IMPBy similarity1
Binding sitei155IMP; via carbonyl oxygenBy similarity1
Metal bindingi161MagnesiumBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi101 – 110IMPBy similarity10
Nucleotide bindingi160 – 161IMPBy similarity2

GO - Molecular functioni

GO - Biological processi

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-guanine phosphoribosyltransferase (EC:2.4.2.8)
Short name:
HGPRT
Short name:
HGPRTase
Gene namesi
Name:hpt
Ordered Locus Names:RCAP_rcc01790
OrganismiRhodobacter capsulatus (strain ATCC BAA-309 / NBRC 16581 / SB1003)
Taxonomic identifieri272942 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhodobacteralesRhodobacteraceaeRhodobacter
Proteomesi
  • UP000002361 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001396111 – 182Hypoxanthine-guanine phosphoribosyltransferaseAdd BLAST182

Interactioni

Protein-protein interaction databases

STRINGi272942.RCAP_rcc01790.

Structurei

3D structure databases

ProteinModelPortaliP37171.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Phylogenomic databases

eggNOGiENOG4108UGV. Bacteria.
COG0634. LUCA.
HOGENOMiHOG000236520.
KOiK00760.
OMAiTPVTMDW.
OrthoDBiPOG091H02F3.

Family and domain databases

CDDicd06223. PRTases_typeI. 1 hit.
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.

P37171-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSQSGYVIDQ MISAKAIAAR VEALGAEITE AFKDTDRLVV VGLLRGSFVF
60 70 80 90 100
IADLIREIGV PCEVDFLEAS SYGNETTSTR EVRVLKDLRG IIGGRDVLVV
110 120 130 140 150
EDIIDTGHTI SKVMEMLRAR APRRIECCAM LDKPSRREVD VKARWTGFEI
160 170 180
PDEFVVGYGL DYAQNHRNLP FIGTVRFTDP QK
Length:182
Mass (Da):20,323
Last modified:October 1, 1994 - v1
Checksum:i890A60FCE67C0E05
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X60977 Genomic DNA. Translation: CAA43293.1.
CP001312 Genomic DNA. Translation: ADE85535.1.
PIRiS19720.
RefSeqiWP_013067514.1. NC_014034.1.

Genome annotation databases

EnsemblBacteriaiADE85535; ADE85535; RCAP_rcc01790.
KEGGircp:RCAP_rcc01790.
PATRICi35503726. VBIRhoCap134200_1821.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X60977 Genomic DNA. Translation: CAA43293.1.
CP001312 Genomic DNA. Translation: ADE85535.1.
PIRiS19720.
RefSeqiWP_013067514.1. NC_014034.1.

3D structure databases

ProteinModelPortaliP37171.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi272942.RCAP_rcc01790.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiADE85535; ADE85535; RCAP_rcc01790.
KEGGircp:RCAP_rcc01790.
PATRICi35503726. VBIRhoCap134200_1821.

Phylogenomic databases

eggNOGiENOG4108UGV. Bacteria.
COG0634. LUCA.
HOGENOMiHOG000236520.
KOiK00760.
OMAiTPVTMDW.
OrthoDBiPOG091H02F3.

Enzyme and pathway databases

UniPathwayiUPA00591; UER00648.

Family and domain databases

CDDicd06223. PRTases_typeI. 1 hit.
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]
ProtoNetiSearch...

Entry informationi

Entry nameiHPRT_RHOCB
AccessioniPrimary (citable) accession number: P37171
Secondary accession number(s): D5AU96
Entry historyi
Integrated into UniProtKB/Swiss-Prot: October 1, 1994
Last sequence update: October 1, 1994
Last modified: November 2, 2016
This is version 86 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. PATHWAY comments
    Index of metabolic and biosynthesis pathways
  2. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.