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P81643 (GLNA2_EMIHU) Reviewed, UniProtKB/Swiss-Prot

Last modified February 19, 2014. Version 31. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (1) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Glutamine synthetase 2 isozyme

EC=6.3.1.2
Alternative name(s):
Chloroplast GS2
Glutamate--ammonia ligase
OrganismEmiliania huxleyi (Pontosphaera huxleyi)
Taxonomic identifier2903 [NCBI]
Taxonomic lineageEukaryotaHaptophyceaeIsochrysidalesNoelaerhabdaceaeEmiliania

Protein attributes

Sequence length25 AA.
Sequence statusFragment.
Protein existenceEvidence at protein level

General annotation (Comments)

Function

Plays a key role in the nitrogen metabolism of microorganisms, animals and plants. Ref.1

Catalytic activity

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

Subunit structure

Homohexamer. Ref.1

Subcellular location

Plastidchloroplast.

Sequence similarities

Belongs to the glutamine synthetase family.

Ontologies

Keywords
   Biological processNitrogen fixation
   Cellular componentChloroplast
Plastid
   LigandATP-binding
Nucleotide-binding
   Molecular functionLigase
   Technical termDirect protein sequencing
Gene Ontology (GO)
   Biological_processnitrogen fixation

Inferred from electronic annotation. Source: UniProtKB-KW

   Cellular_componentchloroplast

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionATP binding

Inferred from electronic annotation. Source: UniProtKB-KW

glutamate-ammonia ligase activity

Inferred from electronic annotation. Source: UniProtKB-EC

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – ›25›25Glutamine synthetase 2 isozyme
PRO_0000153172

Experimental info

Non-terminal residue251

Sequences

Sequence LengthMass (Da)Tools
P81643 [UniParc].

Last modified June 1, 2001. Version 1.
Checksum: F7C9FCFE791435B3

FASTA252,677
        10         20 
XIAGSEEYGK HCFKGAVADA YLAKH 

« Hide

References

[1]"Isoforms of glutamine synthetase in the marine coccolithophorid Emiliania huxleyi (Prymnesiophyceae)."
Maurin C., Le Gal Y.
Comp. Biochem. Physiol. 118B:903-912(1997)
Cited for: PROTEIN SEQUENCE, FUNCTION, SUBUNIT.
Strain: CCAP 920/2.

Cross-references

3D structure databases

ModBaseSearch...
MobiDBSearch...

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Family and domain databases

ProtoNetSearch...

Entry information

Entry nameGLNA2_EMIHU
AccessionPrimary (citable) accession number: P81643
Entry history
Integrated into UniProtKB/Swiss-Prot: August 31, 2004
Last sequence update: June 1, 2001
Last modified: February 19, 2014
This is version 31 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)

Relevant documents

SIMILARITY comments

Index of protein domains and families