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Protein

Glutamine synthetase

Gene

glnA

Organism
Rhizobium meliloti (strain 1021) (Ensifer meliloti) (Sinorhizobium meliloti)
Status
Reviewed-Annotation score: -Protein inferred from homologyi

Functioni

Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia.By similarity

Miscellaneous

Two forms of glutamine synthetase (GSI and GSIII) can be found in this nitrogen fixing bacteria, GSI is a typical prokaryotic glutamine synthetase whereas GSIII is a divergent type with very low sequence similarity to the type I and II enzymes.Curated

Catalytic activityi

ATP + L-glutamate + NH3 = ADP + phosphate + L-glutamine.By similarity

Cofactori

Mg2+By similarityNote: Binds 2 Mg2+ ions per subunit.By similarity

Enzyme regulationi

The activity of this enzyme could be controlled by adenylation under conditions of abundant glutamine.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Metal bindingi131Magnesium 1By similarity1
Metal bindingi133Magnesium 2By similarity1
Binding sitei209ATPBy similarity1
Metal bindingi214Magnesium 2By similarity1
Metal bindingi221Magnesium 2By similarity1
Binding sitei266L-glutamate; via carbonyl oxygenBy similarity1
Metal bindingi270Magnesium 1; via pros nitrogenBy similarity1
Binding sitei274ATPBy similarity1
Binding sitei322L-glutamateBy similarity1
Binding sitei328L-glutamateBy similarity1
Binding sitei340ATPBy similarity1
Binding sitei340L-glutamateBy similarity1
Binding sitei345ATPBy similarity1
Binding sitei353ATPBy similarity1
Metal bindingi358Magnesium 1By similarity1
Binding sitei360L-glutamateBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Nucleotide bindingi272 – 274ATPBy similarity3

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionLigase
Biological processNitrogen fixation
LigandATP-binding, Magnesium, Metal-binding, Nucleotide-binding

Names & Taxonomyi

Protein namesi
Recommended name:
Glutamine synthetaseBy similarity (EC:6.3.1.2By similarity)
Short name:
GSBy similarity
Alternative name(s):
Glutamate--ammonia ligaseCurated
Glutamine synthetase I betaBy similarity
Short name:
GSI betaBy similarity
Gene namesi
Name:glnABy similarity
Ordered Locus Names:R01640
ORF Names:SMc00948
OrganismiRhizobium meliloti (strain 1021) (Ensifer meliloti) (Sinorhizobium meliloti)
Taxonomic identifieri266834 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaAlphaproteobacteriaRhizobialesRhizobiaceaeSinorhizobium/Ensifer groupSinorhizobium
Proteomesi

Subcellular locationi

  • Cytoplasm By similarity

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001532251 – 469Glutamine synthetaseAdd BLAST469

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Modified residuei398O-AMP-tyrosineBy similarity1

Keywords - PTMi

Phosphoprotein

Interactioni

Subunit structurei

Oligomer of 12 subunits arranged in the form of two hexameric ring.By similarity

Protein-protein interaction databases

STRINGi266834.SMc00948

Structurei

3D structure databases

ProteinModelPortaliQ59747
SMRiQ59747
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Regioni265 – 266L-glutamate bindingBy similarity2

Sequence similaritiesi

Belongs to the glutamine synthetase family.Curated

Phylogenomic databases

eggNOGiENOG4105C5F Bacteria
COG0174 LUCA
HOGENOMiHOG000005157
KOiK01915
OMAiIEAAWNT

Family and domain databases

Gene3Di3.10.20.70, 1 hit
InterProiView protein in InterPro
IPR008147 Gln_synt_b-grasp
IPR036651 Gln_synt_N
IPR014746 Gln_synth/guanido_kin_cat_dom
IPR008146 Gln_synth_cat_dom
IPR027303 Gln_synth_gly_rich_site
IPR004809 Gln_synth_I
IPR001637 Gln_synth_I_adenylation_site
IPR027302 Gln_synth_N_conserv_site
PfamiView protein in Pfam
PF00120 Gln-synt_C, 1 hit
PF03951 Gln-synt_N, 1 hit
SMARTiView protein in SMART
SM01230 Gln-synt_C, 1 hit
SUPFAMiSSF54368 SSF54368, 1 hit
SSF55931 SSF55931, 1 hit
TIGRFAMsiTIGR00653 GlnA, 1 hit
PROSITEiView protein in PROSITE
PS00180 GLNA_1, 1 hit
PS00182 GLNA_ADENYLATION, 1 hit
PS00181 GLNA_ATP, 1 hit

Sequencei

Sequence statusi: Complete.

Q59747-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTTANEVLKQ IKENDVKFVD LRFTDPKGKL QHVTMDVVCV DEDMFADGVM
60 70 80 90 100
FDGSSIGGWK AINESDMVLM PDPETAHMDP FFAQSTMVIF CDILDPVSGE
110 120 130 140 150
AYNRDPRGTA KKAEAYLKAS GIGDTVFVGP EAEFFVFDDV KYKADPYNTG
160 170 180 190 200
FKLDSSELPS NDDTDYETGN LGHRPRVKGG YFPVPPVDSS QDMRSEMLTV
210 220 230 240 250
LSEMGVTVEK HHHEVAAAQH ELGVKFDALV RNADKMQIYK YVVHQVANAY
260 270 280 290 300
GKTATFMPKP IFGDNGSGMH VHLSIWKDGK PTFAGDEYAG LSESCLYFIG
310 320 330 340 350
GIIKHAKALN AFTNPSTNSY KRLVPGYEAP VLLAYSARNR SASCRIPFGT
360 370 380 390 400
NPKAKRVEVR FPDPTANPYL AFAAMLMAGL DGIKNKLHPG KAMDKDLYDL
410 420 430 440 450
PPKELKKIPT VCGSLREALE SLDKDRKFLT AGGVFDDDQI DSFIELKMQE
460
VMRFEMTPHP VEFDMYYSV
Length:469
Mass (Da):52,122
Last modified:May 30, 2000 - v2
Checksum:iFD1516B434FDF7A3
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Sequence conflicti354 – 356AKR → PNG in AAC44624 (PubMed:8931324).Curated3

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U50385 Genomic DNA Translation: AAC44624.1
AL591688 Genomic DNA Translation: CAC46219.1
AF169573 Genomic DNA Translation: AAF18968.1
RefSeqiNP_385746.1, NC_003047.1
WP_003528053.1, NC_003047.1

Genome annotation databases

EnsemblBacteriaiCAC46219; CAC46219; SMc00948
GeneIDi1233299
KEGGisme:SMc00948
PATRICifig|266834.11.peg.3073

Entry informationi

Entry nameiGLN1B_RHIME
AccessioniPrimary (citable) accession number: Q59747
Entry historyiIntegrated into UniProtKB/Swiss-Prot: November 1, 1997
Last sequence update: May 30, 2000
Last modified: May 23, 2018
This is version 112 of the entry and version 2 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

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