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Protein

Anthranilate synthase component 2

Gene

trpG

Organism
Buchnera aphidicola subsp. Baizongia pistaciae (strain Bp)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Part of a heterotetrameric complex that catalyzes the two-step biosynthesis of anthranilate, an intermediate in the biosynthesis of L-tryptophan. In the first step, the glutamine-binding beta subunit (TrpG) of anthranilate synthase (AS) provides the glutamine amidotransferase activity which generates ammonia as a substrate that, along with chorismate, is used in the second step, catalyzed by the large alpha subunit of AS (TrpE) to produce anthranilate. In the absence of TrpG, TrpE can synthesize anthranilate directly from chorismate and high concentrations of ammonia (By similarity).By similarity

Catalytic activityi

Chorismate + L-glutamine = anthranilate + pyruvate + L-glutamate.

Pathwayi: L-tryptophan biosynthesis

This protein is involved in step 1 of the subpathway that synthesizes L-tryptophan from chorismate.
Proteins known to be involved in the 5 steps of the subpathway in this organism are:
  1. Anthranilate synthase component 2 (trpG), Anthranilate synthase component 1 (trpE)
  2. Anthranilate phosphoribosyltransferase (trpD)
  3. Tryptophan biosynthesis protein TrpCF (trpC)
  4. Tryptophan biosynthesis protein TrpCF (trpC)
  5. Tryptophan synthase beta chain (trpB), Tryptophan synthase alpha chain (trpA)
This subpathway is part of the pathway L-tryptophan biosynthesis, which is itself part of Amino-acid biosynthesis.
View all proteins of this organism that are known to be involved in the subpathway that synthesizes L-tryptophan from chorismate, the pathway L-tryptophan biosynthesis and in Amino-acid biosynthesis.

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Active sitei84Nucleophile; for GATase activityPROSITE-ProRule annotation1
Binding sitei88GlutamineBy similarity1
Active sitei170For GATase activityPROSITE-ProRule annotation1
Active sitei172For GATase activityPROSITE-ProRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionLyase
Biological processAmino-acid biosynthesis, Aromatic amino acid biosynthesis, Tryptophan biosynthesis

Enzyme and pathway databases

BioCyciBAPH224915:G1G09-532-MONOMER
UniPathwayiUPA00035; UER00040

Protein family/group databases

MEROPSiC26.960

Names & Taxonomyi

Protein namesi
Recommended name:
Anthranilate synthase component 2 (EC:4.1.3.27)
Short name:
AS
Short name:
ASII
Alternative name(s):
Anthranilate synthase, GATase component
Anthranilate synthase, glutamine amidotransferase component
Gene namesi
Name:trpG
Ordered Locus Names:bbp_525
OrganismiBuchnera aphidicola subsp. Baizongia pistaciae (strain Bp)
Taxonomic identifieri224915 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesErwiniaceaeBuchnera
Proteomesi
  • UP000000601 Componenti: Chromosome

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000568741 – 192Anthranilate synthase component 2Add BLAST192

Interactioni

Subunit structurei

Heterotetramer consisting of two non-identical subunits: a beta subunit (TrpG) and a large alpha subunit (TrpE).By similarity

Protein-protein interaction databases

STRINGi224915.bbp525

Structurei

3D structure databases

ProteinModelPortaliQ89A30
SMRiQ89A30
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Domains and Repeats

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Domaini3 – 192Glutamine amidotransferase type-1PROSITE-ProRule annotationAdd BLAST190

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni57 – 59Glutamine bindingBy similarity3
Regioni134 – 135Glutamine bindingBy similarity2

Keywords - Domaini

Glutamine amidotransferase

Phylogenomic databases

eggNOGiENOG4105DDQ Bacteria
COG0512 LUCA
KOiK01658
OMAiHQVVIYR
OrthoDBiPOG091H01Q6

Family and domain databases

Gene3Di3.40.50.880, 1 hit
InterProiView protein in InterPro
IPR029062 Class_I_gatase-like
IPR017926 GATASE
IPR006221 TrpG/PapA_dom
PfamiView protein in Pfam
PF00117 GATase, 1 hit
SUPFAMiSSF52317 SSF52317, 1 hit
TIGRFAMsiTIGR00566 trpG_papA, 1 hit
PROSITEiView protein in PROSITE
PS51273 GATASE_TYPE_1, 1 hit

Sequencei

Sequence statusi: Complete.

Q89A30-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MGNILLLDNI DSFTYNLVDQ LRSNFHQVFV YRNTVRKNII LKKLSKMINP
60 70 80 90 100
ILILSPGPGN PDNAGCMPQL LMELKGKLPI IGICLGHQAI VKMYGGHVGY
110 120 130 140 150
SGEILHGQAS LINHDNKAMF LGMSNPLPVA RYHSLICSNI PNMLVVNAHF
160 170 180 190
NNMVMAVRND YEKICGFQFH PESILTTRGT EFLQRVIQWT KI
Length:192
Mass (Da):21,603
Last modified:June 1, 2003 - v1
Checksum:iBBE006C1FC39B0BC
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AE016826 Genomic DNA Translation: AAO27227.1
RefSeqiWP_011091628.1, NC_004545.1

Genome annotation databases

EnsemblBacteriaiAAO27227; AAO27227; bbp_525
KEGGibab:bbp_525

Similar proteinsi

Entry informationi

Entry nameiTRPG_BUCBP
AccessioniPrimary (citable) accession number: Q89A30
Entry historyiIntegrated into UniProtKB/Swiss-Prot: April 13, 2004
Last sequence update: June 1, 2003
Last modified: March 28, 2018
This is version 94 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

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