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Protein

Phosphoribosylformylglycinamidine synthase subunit PurQ

Gene

purQ

Organism
Staphylococcus epidermidis (strain ATCC 35984 / RP62A)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Part of the phosphoribosylformylglycinamidine synthase complex involved in the purines biosynthetic pathway. Catalyzes the ATP-dependent conversion of formylglycinamide ribonucleotide (FGAR) and glutamine to yield formylglycinamidine ribonucleotide (FGAM) and glutamate. The FGAM synthase complex is composed of three subunits. PurQ produces an ammonia molecule by converting glutamine to glutamate. PurL transfers the ammonia molecule to FGAR to form FGAM in an ATP-dependent manner. PurS interacts with PurQ and PurL and is thought to assist in the transfer of the ammonia molecule from PurQ to PurL.UniRule annotation

Catalytic activityi

ATP + N(2)-formyl-N(1)-(5-phospho-D-ribosyl)glycinamide + L-glutamine + H2O = ADP + phosphate + 2-(formamido)-N(1)-(5-phospho-D-ribosyl)acetamidine + L-glutamate.UniRule annotation
L-glutamine + H2O = L-glutamate + NH3.UniRule annotation

Pathwayi: IMP biosynthesis via de novo pathway

This protein is involved in step 1 of the subpathway that synthesizes 5-amino-1-(5-phospho-D-ribosyl)imidazole from N(2)-formyl-N(1)-(5-phospho-D-ribosyl)glycinamide.UniRule annotation
Proteins known to be involved in the 2 steps of the subpathway in this organism are:
  1. Phosphoribosylformylglycinamidine synthase subunit PurL (purL), Phosphoribosylformylglycinamidine synthase subunit PurS (purS), Phosphoribosylformylglycinamidine synthase subunit PurQ (purQ)
  2. Phosphoribosylformylglycinamidine cyclo-ligase (purM)
This subpathway is part of the pathway IMP biosynthesis via de novo 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 5-amino-1-(5-phospho-D-ribosyl)imidazole from N(2)-formyl-N(1)-(5-phospho-D-ribosyl)glycinamide, the pathway IMP biosynthesis via de novo pathway and in Purine metabolism.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei85NucleophileUniRule annotation1
Active sitei193UniRule annotation1
Active sitei195UniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Hydrolase, Ligase

Keywords - Biological processi

Purine biosynthesis

Keywords - Ligandi

ATP-binding, Nucleotide-binding

Enzyme and pathway databases

UniPathwayiUPA00074; UER00128.

Names & Taxonomyi

Protein namesi
Recommended name:
Phosphoribosylformylglycinamidine synthase subunit PurQUniRule annotation (EC:6.3.5.3UniRule annotation)
Short name:
FGAM synthaseUniRule annotation
Alternative name(s):
Formylglycinamide ribonucleotide amidotransferase subunit IUniRule annotation
Short name:
FGAR amidotransferase IUniRule annotation
Short name:
FGAR-AT IUniRule annotation
Glutaminase PurQUniRule annotation (EC:3.5.1.2UniRule annotation)
Phosphoribosylformylglycinamidine synthase subunit IUniRule annotation
Gene namesi
Name:purQUniRule annotation
Ordered Locus Names:SERP0653
OrganismiStaphylococcus epidermidis (strain ATCC 35984 / RP62A)
Taxonomic identifieri176279 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesStaphylococcaceaeStaphylococcus
Proteomesi
  • UP000000531 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001005901 – 223Phosphoribosylformylglycinamidine synthase subunit PurQAdd BLAST223

Proteomic databases

PRIDEiQ5HQA2.

Interactioni

Subunit structurei

Part of the FGAM synthase complex composed of 1 PurL, 1 PurQ and 2 PurS subunits.UniRule annotation

Protein-protein interaction databases

STRINGi176279.SERP0653.

Structurei

3D structure databases

ProteinModelPortaliQ5HQA2.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini3 – 223Glutamine amidotransferase type-1UniRule annotationAdd BLAST221

Sequence similaritiesi

Contains 1 glutamine amidotransferase type-1 domain.UniRule annotation

Keywords - Domaini

Glutamine amidotransferase

Phylogenomic databases

eggNOGiENOG4105D21. Bacteria.
COG0047. LUCA.
HOGENOMiHOG000238240.
KOiK01952.
OMAiHAEGRFY.

Family and domain databases

Gene3Di3.40.50.880. 1 hit.
HAMAPiMF_00421. PurQ. 1 hit.
InterProiIPR029062. Class_I_gatase-like.
IPR017926. GATASE.
IPR010075. PRibForGlyAmidine_synth_PurQ.
[Graphical view]
PIRSFiPIRSF001586. FGAM_synth_I. 1 hit.
SUPFAMiSSF52317. SSF52317. 1 hit.
TIGRFAMsiTIGR01737. FGAM_synth_I. 1 hit.
PROSITEiPS51273. GATASE_TYPE_1. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q5HQA2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MKFAVLVFPG SNCDRDMYNA AIKSGVDAAY VDYRETTLDG FDGVLIPGGF
60 70 80 90 100
SFGDYLRSGA MASVAPIIKE VKRFAKEGKP VLGVCNGFQI LTEIGLLPGA
110 120 130 140 150
LLHNDSHLFI SRNETLKITN NQTPFTHLYV KNENVVYPVA HGEGHYYCTD
160 170 180 190 200
EIYRELNDNN QIILKYTNNP NGSYEDIAGI VNKEGNVCGM MPHPERALET
210 220
LLGTNSGVKL FESMVKSWRE QNV
Length:223
Mass (Da):24,733
Last modified:February 15, 2005 - v1
Checksum:i6A5FE904C75718B1
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000029 Genomic DNA. Translation: AAW53999.1.
RefSeqiWP_001831727.1. NC_002976.3.

Genome annotation databases

EnsemblBacteriaiAAW53999; AAW53999; SERP0653.
KEGGiser:SERP0653.
PATRICi19612179. VBIStaEpi130894_0633.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000029 Genomic DNA. Translation: AAW53999.1.
RefSeqiWP_001831727.1. NC_002976.3.

3D structure databases

ProteinModelPortaliQ5HQA2.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi176279.SERP0653.

Proteomic databases

PRIDEiQ5HQA2.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAW53999; AAW53999; SERP0653.
KEGGiser:SERP0653.
PATRICi19612179. VBIStaEpi130894_0633.

Phylogenomic databases

eggNOGiENOG4105D21. Bacteria.
COG0047. LUCA.
HOGENOMiHOG000238240.
KOiK01952.
OMAiHAEGRFY.

Enzyme and pathway databases

UniPathwayiUPA00074; UER00128.

Family and domain databases

Gene3Di3.40.50.880. 1 hit.
HAMAPiMF_00421. PurQ. 1 hit.
InterProiIPR029062. Class_I_gatase-like.
IPR017926. GATASE.
IPR010075. PRibForGlyAmidine_synth_PurQ.
[Graphical view]
PIRSFiPIRSF001586. FGAM_synth_I. 1 hit.
SUPFAMiSSF52317. SSF52317. 1 hit.
TIGRFAMsiTIGR01737. FGAM_synth_I. 1 hit.
PROSITEiPS51273. GATASE_TYPE_1. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiPURQ_STAEQ
AccessioniPrimary (citable) accession number: Q5HQA2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 30, 2005
Last sequence update: February 15, 2005
Last modified: November 2, 2016
This is version 92 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.