ID   GLN1B_AZOC5             Reviewed;         469 AA.
AC   P94126; A8HYD0;
DT   30-MAY-2000, integrated into UniProtKB/Swiss-Prot.
DT   26-FEB-2008, sequence version 2.
DT   27-MAR-2024, entry version 120.
DE   RecName: Full=Glutamine synthetase {ECO:0000250|UniProtKB:P0A1P6};
DE            Short=GS {ECO:0000250|UniProtKB:P0A1P6};
DE            EC=6.3.1.2 {ECO:0000250|UniProtKB:P0A1P6};
DE   AltName: Full=Glutamate--ammonia ligase {ECO:0000305};
DE   AltName: Full=Glutamine synthetase I beta {ECO:0000250|UniProtKB:P0A1P6};
DE            Short=GSI beta {ECO:0000250|UniProtKB:P0A1P6};
GN   Name=glnA {ECO:0000250|UniProtKB:P0A1P6}; OrderedLocusNames=AZC_1601;
OS   Azorhizobium caulinodans (strain ATCC 43989 / DSM 5975 / JCM 20966 / LMG
OS   6465 / NBRC 14845 / NCIMB 13405 / ORS 571).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Xanthobacteraceae; Azorhizobium.
OX   NCBI_TaxID=438753;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX   PubMed=9171403; DOI=10.1128/jb.179.11.3580-3587.1997;
RA   Michel-Reydellet N., Desnoues N., Elmerich C., Kaminski P.A.;
RT   "Characterization of Azorhizobium caulinodans glnB and glnA genes:
RT   involvement of the P(II) protein in symbiotic nitrogen fixation.";
RL   J. Bacteriol. 179:3580-3587(1997).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 43989 / DSM 5975 / JCM 20966 / LMG 6465 / NBRC 14845 /
RC   NCIMB 13405 / ORS 571;
RA   Lee K.B., Backer P.D., Aono T., Liu C.T., Suzuki S., Suzuki T., Kaneko T.,
RA   Yamada M., Tabata S., Kupfer D.M., Najar F.Z., Wiley G.B., Roe B.,
RA   Binnewies T., Ussery D., Vereecke D., Gevers D., Holsters M., Oyaizu H.;
RT   "Complete genome sequence of the nitrogen-fixing bacterium Azorhizobium
RT   caulinodans ORS571.";
RL   Submitted (APR-2007) to the EMBL/GenBank/DDBJ databases.
CC   -!- FUNCTION: Catalyzes the ATP-dependent biosynthesis of glutamine from
CC       glutamate and ammonia. {ECO:0000250|UniProtKB:P0A1P6}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=ATP + L-glutamate + NH4(+) = ADP + H(+) + L-glutamine +
CC         phosphate; Xref=Rhea:RHEA:16169, ChEBI:CHEBI:15378,
CC         ChEBI:CHEBI:28938, ChEBI:CHEBI:29985, ChEBI:CHEBI:30616,
CC         ChEBI:CHEBI:43474, ChEBI:CHEBI:58359, ChEBI:CHEBI:456216; EC=6.3.1.2;
CC         Evidence={ECO:0000250|UniProtKB:P0A1P6};
CC   -!- COFACTOR:
CC       Name=Mg(2+); Xref=ChEBI:CHEBI:18420;
CC         Evidence={ECO:0000250|UniProtKB:P9WN39};
CC       Note=Binds 2 Mg(2+) ions per subunit. {ECO:0000250|UniProtKB:P9WN39};
CC   -!- ACTIVITY REGULATION: The activity of this enzyme could be controlled by
CC       adenylation under conditions of abundant glutamine.
CC       {ECO:0000250|UniProtKB:Q3V5W6}.
CC   -!- SUBUNIT: Oligomer of 12 subunits arranged in the form of two hexameric
CC       ring. {ECO:0000250|UniProtKB:P0A1P6}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000250|UniProtKB:P9WN39}.
CC   -!- SIMILARITY: Belongs to the glutamine synthetase family. {ECO:0000305}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; Y10213; CAA71265.1; -; Genomic_DNA.
DR   EMBL; AP009384; BAF87599.1; -; Genomic_DNA.
DR   RefSeq; WP_012170129.1; NC_009937.1.
DR   AlphaFoldDB; P94126; -.
DR   SMR; P94126; -.
DR   STRING; 438753.AZC_1601; -.
DR   KEGG; azc:AZC_1601; -.
DR   eggNOG; COG0174; Bacteria.
DR   HOGENOM; CLU_017290_1_2_5; -.
DR   Proteomes; UP000000270; Chromosome.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0005524; F:ATP binding; IEA:UniProtKB-KW.
DR   GO; GO:0004356; F:glutamine synthetase activity; IEA:UniProtKB-EC.
DR   GO; GO:0046872; F:metal ion binding; IEA:UniProtKB-KW.
DR   GO; GO:0006542; P:glutamine biosynthetic process; IEA:InterPro.
DR   GO; GO:0009399; P:nitrogen fixation; IEA:UniProtKB-KW.
DR   Gene3D; 3.10.20.70; Glutamine synthetase, N-terminal domain; 1.
DR   Gene3D; 3.30.590.10; Glutamine synthetase/guanido kinase, catalytic domain; 1.
DR   InterPro; IPR008147; Gln_synt_N.
DR   InterPro; IPR036651; Gln_synt_N_sf.
DR   InterPro; IPR014746; Gln_synth/guanido_kin_cat_dom.
DR   InterPro; IPR008146; Gln_synth_cat_dom.
DR   InterPro; IPR027303; Gln_synth_gly_rich_site.
DR   InterPro; IPR004809; Gln_synth_I.
DR   InterPro; IPR001637; Gln_synth_I_adenylation_site.
DR   InterPro; IPR027302; Gln_synth_N_conserv_site.
DR   NCBIfam; TIGR00653; GlnA; 1.
DR   PANTHER; PTHR43407; GLUTAMINE SYNTHETASE; 1.
DR   PANTHER; PTHR43407:SF2; GLUTAMINE SYNTHETASE; 1.
DR   Pfam; PF00120; Gln-synt_C; 1.
DR   Pfam; PF03951; Gln-synt_N; 1.
DR   SMART; SM01230; Gln-synt_C; 1.
DR   SUPFAM; SSF54368; Glutamine synthetase, N-terminal domain; 1.
DR   SUPFAM; SSF55931; Glutamine synthetase/guanido kinase; 1.
DR   PROSITE; PS00180; GLNA_1; 1.
DR   PROSITE; PS00182; GLNA_ADENYLATION; 1.
DR   PROSITE; PS00181; GLNA_ATP; 1.
DR   PROSITE; PS51986; GS_BETA_GRASP; 1.
DR   PROSITE; PS51987; GS_CATALYTIC; 1.
PE   3: Inferred from homology;
KW   ATP-binding; Cytoplasm; Ligase; Magnesium; Metal-binding;
KW   Nitrogen fixation; Nucleotide-binding; Phosphoprotein; Reference proteome.
FT   CHAIN           1..469
FT                   /note="Glutamine synthetase"
FT                   /id="PRO_0000153230"
FT   DOMAIN          14..98
FT                   /note="GS beta-grasp"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01330"
FT   DOMAIN          106..469
FT                   /note="GS catalytic"
FT                   /evidence="ECO:0000255|PROSITE-ProRule:PRU01331"
FT   BINDING         131
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         133
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         209
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   BINDING         214
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         221
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="2"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         265..266
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   BINDING         266
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P12425"
FT   BINDING         270
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         272..274
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   BINDING         274
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P77961"
FT   BINDING         322
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   BINDING         328
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   BINDING         340
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         340
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         345
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         353
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000250|UniProtKB:P77961"
FT   BINDING         358
FT                   /ligand="Mg(2+)"
FT                   /ligand_id="ChEBI:CHEBI:18420"
FT                   /ligand_label="1"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   BINDING         360
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000250|UniProtKB:P0A1P6"
FT   MOD_RES         398
FT                   /note="O-AMP-tyrosine"
FT                   /evidence="ECO:0000250|UniProtKB:P9WN39"
FT   CONFLICT        58..60
FT                   /note="GWK -> AE (in Ref. 1; CAA71265)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        279
FT                   /note="G -> R (in Ref. 1; CAA71265)"
FT                   /evidence="ECO:0000305"
FT   CONFLICT        413
FT                   /note="G -> C (in Ref. 1; CAA71265)"
FT                   /evidence="ECO:0000305"
SQ   SEQUENCE   469 AA;  52386 MW;  302A2DA5C9DB35CA CRC64;
     MKTAKEVLDF IKSNDVKYVD LRFTDPRGKW QHVTFDITMV DEDFFAEGQA FDGSSIAGWK
     AINESDMLLM PDVTTACVDP FFSETTLSVV CDVLEPTTGE PYGRDPRGIA KKAMAYLQST
     GIGDTVFFGP EAEFFIFDDV KFKADPYNTG FKLDSIELPT NGDTDYEGGN LGHRIKTKGG
     YFPVPPLDSA QDMRSEMLAS MAKMGAKVEK HHHEVASAQH ELGLKFGQLV TMADHLQVYK
     YCIHQVANIY GKTATFMPKP VYGDNGSGMH VHQSIWKDGK PLFAGDKYAD LSQECLWYIG
     GVIKHAKSLN AFTNPLTNSY KRLVPGYEAP VLLAYSARNR SASCRIPYTN NPKAKRVEVR
     FPDPGANPYL AFSALFMAGM DGILNKIDPG SAMDKDLYDL PPAELKQIPT VCGSLREALE
     SLAKDHDYLL KGDVFQKDFI ESYIDLKMQE VARFEMTPHP VEFEMYYSV
//