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Entry version 128 (12 Aug 2020)
Sequence version 3 (23 Jan 2007)
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Protein

Glutamine synthetase

Gene

glnA

Organism
Nostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
Status
Reviewed-Annotation score:

Annotation score:4 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the 'correct annotation' for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the 'protein existence' evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Involved in nitrogen metabolism via ammonium assimilation. Catalyzes the ATP-dependent biosynthesis of glutamine from glutamate and ammonia.By similarity

Miscellaneous

In Anabaena, it is present in ammonia-grown vegetative cells as well as in heterocysts (for nitrogen fixation).

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the 'Function' section provides information relevant to cofactors. A cofactor is any non-protein substance required for a protein to be catalytically active. Some cofactors are inorganic, such as the metal atoms zinc, iron, and copper in various oxidation states. Others, such as most vitamins, are organic.<p><a href='/help/cofactor' target='_top'>More...</a></p>Cofactori

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

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi131Magnesium 1By similarity1
Metal bindingi133Magnesium 2By similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.<p><a href='/help/binding' target='_top'>More...</a></p>Binding sitei211ATPBy similarity1
Metal bindingi216Magnesium 2By similarity1
Metal bindingi224Magnesium 2By similarity1
Binding sitei269L-glutamate; via carbonyl oxygenBy similarity1
Metal bindingi273Magnesium 1; via pros nitrogenBy similarity1
Binding sitei277ATPBy similarity1
Binding sitei325L-glutamateBy similarity1
Binding sitei331L-glutamateBy similarity1
Binding sitei343ATPBy similarity1
Binding sitei343L-glutamateBy similarity1
Binding sitei348ATPBy similarity1
Binding sitei357ATPBy similarity1
Metal bindingi362Magnesium 1By similarity1
Binding sitei364L-glutamateBy similarity1

Regions

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes a region in the protein which binds nucleotide phosphates. It always involves more than one amino acid and includes all residues involved in nucleotide-binding.<p><a href='/help/np_bind' target='_top'>More...</a></p>Nucleotide bindingi275 – 277ATPBy similarity3

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

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

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
Glutamine synthetaseBy similarity (EC:6.3.1.2By similarity)
Short name:
GSBy similarity
Alternative name(s):
Glutamate--ammonia ligaseBy similarity
Glutamine synthetase I betaBy similarity
Short name:
GSI betaBy similarity
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: 'Name', 'Synonyms', 'Ordered locus names' and 'ORF names'.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:glnABy similarity
Ordered Locus Names:alr2328
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiNostoc sp. (strain PCC 7120 / SAG 25.82 / UTEX 2576)
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the 'taxonomic identifier' or 'taxid'.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri103690 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaCyanobacteriaNostocalesNostocaceaeNostoc
<p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000002483 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes%5Fmanual">proteome</a> can consist of several components.<br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemovedCurated
<p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001532152 – 474Glutamine synthetaseAdd BLAST473

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'PTM / Processing' section specifies the position and type of each modified residue excluding <a href="http://www.uniprot.org/manual/lipid">lipids</a>, <a href="http://www.uniprot.org/manual/carbohyd">glycans</a> and <a href="http://www.uniprot.org/manual/crosslnk">protein cross-links</a>.<p><a href='/help/mod_res' target='_top'>More...</a></p>Modified residuei402O-AMP-tyrosineBy similarity1

Keywords - PTMi

Phosphoprotein

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

Keywords - Developmental stagei

Heterocyst

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the <a href="http://www.uniprot.org/help/interaction%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Oligomer of 12 subunits arranged in the form of two hexagons.

By similarity

Protein-protein interaction databases

STRING: functional protein association networks

More...
STRINGi
103690.17131420

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

3D structure databases

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P00964

Database of comparative protein structure models

More...
ModBasei
Search...

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

Region

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni268 – 269L-glutamate bindingBy similarity2

<p>This subsection of the 'Family and domains' section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the glutamine synthetase family.By similarity

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
COG0174, Bacteria

KEGG Orthology (KO)

More...
KOi
K01915

Identification of Orthologs from Complete Genome Data

More...
OMAi
PHPHEFE

Database of Orthologous Groups

More...
OrthoDBi
416474at2

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
3.10.20.70, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View 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

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF00120, Gln-synt_C, 1 hit
PF03951, Gln-synt_N, 1 hit

Simple Modular Architecture Research Tool; a protein domain database

More...
SMARTi
View protein in SMART
SM01230, Gln-synt_C, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF54368, SSF54368, 1 hit
SSF55931, SSF55931, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00653, GlnA, 1 hit

PROSITE; a protein domain and family database

More...
PROSITEi
View protein in PROSITE
PS00180, GLNA_1, 1 hit
PS00182, GLNA_ADENYLATION, 1 hit
PS00181, GLNA_ATP, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

P00964-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MTTPQEVLKR IQDEKIELID LKFIDTVGTW QHLTLYQNQI DESSFSDGVP
60 70 80 90 100
FDGSSIRGWK AINESDMTMV LDPNTAWIDP FMEVPTLSIV CSIKEPRTGE
110 120 130 140 150
WYNRCPRVIA QKAIDYLVST GIGDTAFFGP EAEFFIFDSA RFAQNANEGY
160 170 180 190 200
YFLDSVEGAW NSGKEGTADK PNLAYKPRFK EGYFPVSPTD SFQDIRTEML
210 220 230 240 250
LTMAKLGVPI EKHHHEVATG GQCELGFRFG KLIEAADWLM IYKYVIKNVA
260 270 280 290 300
KKYGKTVTFM PKPIFGDNGS GMHCHQSIWK DGKPLFAGDQ YAGLSEMGLY
310 320 330 340 350
YIGGLLKHAP ALLAITNPST NSYKRLVPGY EAPVNLAYSQ GNRSASIRIP
360 370 380 390 400
LSGTNPKAKR LEFRCPDATS NPYLAFAAML CAGIDGIKNK IHPGEPLDKN
410 420 430 440 450
IYELSPEELA KVPSTPGSLE LALEALENDH AFLTDTGVFT EDFIQNWIDY
460 470
KLANEVKQMQ LRPHPYEFSI YYDV
Length:474
Mass (Da):53,136
Last modified:January 23, 2007 - v3
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i6A801A1B55262B28
GO

Experimental Info

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the 'Sequence' section reports difference(s) between the canonical sequence (displayed by default in the entry) and the different sequence submissions merged in the entry. These various submissions may originate from different sequencing projects, different types of experiments, or different biological samples. Sequence conflicts are usually of unknown origin.<p><a href='/help/conflict' target='_top'>More...</a></p>Sequence conflicti107R → P in CAA24982 (Ref. 1) Curated1
Sequence conflicti177Missing AA sequence (Ref. 3) Curated1

<p>This subsection of the 'Sequence' section reports information derived from mass spectrometry experiments done on the entire protein or on biologically active derived peptide(s).<p><a href='/help/mass_spectrometry' target='_top'>More...</a></p>Mass spectrometryi

Molecular mass is 53314 Da. Determined by MALDI. 1 Publication

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
X00147 Genomic DNA Translation: CAA24982.1
BA000019 Genomic DNA Translation: BAB74027.1

Protein sequence database of the Protein Information Resource

More...
PIRi
A01192, AJAIQ
AI2096

NCBI Reference Sequences

More...
RefSeqi
WP_010996484.1, NZ_RSCN01000004.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
BAB74027; BAB74027; BAB74027

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ana:alr2328

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
X00147 Genomic DNA Translation: CAA24982.1
BA000019 Genomic DNA Translation: BAB74027.1
PIRiA01192, AJAIQ
AI2096
RefSeqiWP_010996484.1, NZ_RSCN01000004.1

3D structure databases

SMRiP00964
ModBaseiSearch...

Protein-protein interaction databases

STRINGi103690.17131420

Genome annotation databases

EnsemblBacteriaiBAB74027; BAB74027; BAB74027
KEGGiana:alr2328

Phylogenomic databases

eggNOGiCOG0174, Bacteria
KOiK01915
OMAiPHPHEFE
OrthoDBi416474at2

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

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the 'Entry information' section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiGLN1B_NOSS1
<p>This subsection of the 'Entry information' section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called 'Primary (citable) accession number'.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P00964
<p>This subsection of the 'Entry information' section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification ('Last modified'). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 21, 1986
Last sequence update: January 23, 2007
Last modified: August 12, 2020
This is version 128 of the entry and version 3 of the sequence. See complete history.
<p>This subsection of the 'Entry information' section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn't fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

Direct protein sequencing, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families
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