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

<p>Describes the catalytic activity of an enzyme, i.e. the chemical reaction it catalyzes. This information usually correlates with the presence of an EC (Enzyme Commission) number in the ‘Names and taxonomy’ section.</p><p><a href='../manual/catalytic_activity' target='_top'>More...</a></p>Catalytic activityⁱ

<p>Describes the metabolic pathway(s) associated with a protein.</p><p><a href='../manual/pathway' target='_top'>More...</a></p>Pathwayⁱ

Sites

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Is used for enzymes and indicates the residues directly involved in catalysis.</p><p><a href='../manual/act_site' target='_top'>More...</a></p>Active sitei	2 – 2	1	For GATase activityBy similarity
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	98 – 98	1	GlutamineBy similarity
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	231 – 231	1	ATP; via carbonyl oxygenBy similarity
<p>Describes the interaction between a single amino acid and another chemical entity. Priority is given to the annotation of physiological ligands.</p><p><a href='../manual/binding' target='_top'>More...</a></p>Binding sitei	267 – 267	1	ATP; via amide nitrogen and carbonyl oxygenBy similarity
<p>Describes interesting single amino acid sites on the sequence that are not defined in any other subsection. This subsection can be displayed in different sections (‘Function’, ‘PTM / Processing’, ‘Pathology and Biotech’) according to its content.</p><p><a href='../manual/site' target='_top'>More...</a></p>Sitei	343 – 343	1	Important for beta-aspartyl-AMP intermediate formationBy similarity

Regions

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>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><p><a href='../manual/np_bind' target='_top'>More...</a></p>Nucleotide bindingi	341 – 342	2	ATPBy similarity

<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><p><a href='../manual/gene_ontology' target='_top'>More...</a></p>GO - Molecular functionⁱ

1. asparagine synthase (glutamine-hydrolyzing) activity Source: UniProtKB-EC
2. ATP binding Source: UniProtKB-KW

<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><p><a href='../manual/gene_ontology' target='_top'>More...</a></p>GO - Biological processⁱ

1. glutamine metabolic process Source: UniProtKB-KW
2. L-asparagine biosynthetic process Source: UniProtKB-UniPathway

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Molecular functionⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Biological processⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Ligandⁱ

Enzyme and pathway databases

Protein family/group databases

<p>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><p><a href='../manual/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyⁱ

Organism-specific databases

<p>Provides information on the disease(s) and phenotype(s) associated with the deficiency of a protein.</p><p><a href='../manual/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechⁱ

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

Molecule processing

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Indicates that the initiator methionine is cleaved from the mature protein.</p><p><a href='../manual/init_met' target='_top'>More...</a></p>Initiator methioninei	1 – 1	1	RemovedBy similarity
<p>Describes the extent of a polypeptide chain in the mature protein following processing.</p><p><a href='../manual/chain' target='_top'>More...</a></p>Chaini	2 – 578	577	Asparagine synthetase [glutamine-hydrolyzing] 2		PRO_0000420840	Add BLAST

Proteomic databases

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

<p>Provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms. By default, the information is derived from experiments at the mRNA level, unless specified ‘at the protein level’.</p><p><a href='../manual/tissue_specificity' target='_top'>More...</a></p>Tissue specificityⁱ

<p>Reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).</p><p><a href='../manual/induction' target='_top'>More...</a></p>Inductionⁱ

Gene expression databases

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

Protein-protein interaction databases

<p>Provides information on the tertiary structure of a protein.</p><p><a href='../manual/structure_section' target='_top'>More...</a></p>Structureⁱ

3D structure databases

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

Domains and Repeats

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.</p><p><a href='../manual/domain' target='_top'>More...</a></p>Domaini	2 – 185	184	Glutamine amidotransferase type-2PROSITE-ProRule annotation <p>Manual validated information which has been generated by the UniProtKB automatic annotation system.</p> <p><a href="/manual/evidences#ECO:0000255">More…</a></p> Manual assertion according to rulesi PROSITE-ProRule:PRU00609			Add BLAST
<p>Describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.</p><p><a href='../manual/domain' target='_top'>More...</a></p>Domaini	210 – 450	241	Asparagine synthetase			Add BLAST

Region

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	50 – 54	5	Glutamine bindingBy similarity
<p>Describes a region of interest that cannot be described in other subsections.</p><p><a href='../manual/region' target='_top'>More...</a></p>Regioni	75 – 77	3	Glutamine bindingBy similarity

Compositional bias

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes the position of regions of compositional bias within the protein and the particular amino acids that are over-represented within those regions.</p><p><a href='../manual/compbias' target='_top'>More...</a></p>Compositional biasi	559 – 565	7	Poly-Ala

<p>Provides information about the sequence similarity with other proteins.</p><p><a href='../manual/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Domainⁱ

Phylogenomic databases

Family and domain databases

<p>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 length and molecular weight.</p><p><a href='../manual/sequences_section' target='_top'>More...</a></p>Sequences (2)ⁱ

<p>Indicates if the canonical sequence displayed by default in the entry is complete or not.</p><p><a href='../manual/sequence_status' target='_top'>More...</a></p>Sequence statusⁱ: Complete.

<p>Indicates if the canonical sequence displayed by default in the entry is in its mature form or if it represents the precursor.</p><p><a href='../manual/sequence_processing' target='_top'>More...</a></p>Sequence processingⁱ: The displayed sequence is further processed into a mature form.

This entry describes 2<p>Lists the alternative protein sequences (isoforms) that can be generated from the same gene by a single or by the combination of up to four biological events (alternative promoter usage, alternative splicing, alternative initiation and ribosomal frameshifting). Additionally, this section gives relevant information on each alternative protein isoform.</p><p><a href='../manual/alternative_products' target='_top'>More...</a></p> isoformsⁱ produced by alternative splicing. Align

        10         20         30         40         50
MCGILAVLGC IDNSQAKRSR IIELSRRLRH RGPDWSGLHC YEDCYLAHER 
        60         70         80         90        100
LAIIDPTSGD QPLYNEDKTV AVTVNGEIYN HKILREKLKS HQFRTGSDCE 
       110        120        130        140        150
VIAHLYEEHG EEFIDMLDGM FAFVLLDTRD KSFIAARDAI GITPLYIGWG 
       160        170        180        190        200
LDGSVWFASE MKALSDDCEQ FMSFPPGHIY SSKQGGLRRW YNPPWYNEQV 
       210        220        230        240        250
PSTPYDPLVL RNAFEKAVIK RLMTDVPFGV LLSGGLDSSL VAAVALRHLE 
       260        270        280        290        300
KSEAARQWGS QLHTFCIGLQ GSPDLKAGRE VADYLGTRHH EFQFTVQDGI 
       310        320        330        340        350
DAIEEVIYHI ETYDVTTIRA STPMFLMSRK IKSLGVKMVL SGEGSDEILG 
       360        370        380        390        400
GYLYFHKAPN KKEFHEETCR KIKALHQFDC LRANKSTSAW GVEARVPFLD 
       410        420        430        440        450
KEFLNVAMSI DPEWKLIKPD LGRIEKWVLR NAFDDEERPY LPKHILYRQK 
       460        470        480        490        500
EQFSDGVGYS WIDGLKDHAN KHVSDTMLSN ASFVFPDNTP LTKEAYYYRT 
       510        520        530        540        550
IFEKFFPKSA ARATVPGGPS IACSTAKAVE WDATWSKNLD PSGRAALGVH 
       560        570 
VAAYEEDKAA AAAKAGSDLV DPLPKNGT                       

        10         20         30         40         50
MCGILAVLGC IDNSQAKRSR IIELSRRLRH RGPDWSGLHC YEDCYLAHER 
        60         70         80         90        100
LAIIDPTSGD QPLYNEDKTV AVTVNGEIYN HKILREKLKS HQFRTGSDCE 
       110        120        130        140        150
VIAHLYEEHG EEFIDMLDGM FAFVLLDTRD KSFIAARDAI GITPLYIGWG 
       160        170        180        190        200
LDGSVWFASE MKALSDDCEQ FMSFPPGHIY SSKQGGLRRW YNPPWYNEQV 
       210        220        230        240        250
PSTPYDPLVL RNAFEKAVIK RLMTDVPFGV LLSGGLDSSL VAAVALRHLE 
       260        270        280        290        300
KSEAARQWGS QLHTFCIGLQ GSPDLKAGRE VADYLGTRHH EFQFTVQDGI 
       310        320        330        340        350
DAIEEVIYHI ETYDVTTIRA STPMFLMSRK IKSLGVKMVL SGEGSDEILG 
       360        370        380        390        400
GYLYFHKAPN KKEFHEETCR KIKALHQFDC LRANKSTSAW GVEARVPFLD 
       410        420        430        440        450
KEFLNVAMSI DPEWKLIKPD LGRIEKWVLR NAFDDEERPY LPKHILYRQK 
       460        470        480        490        500
EQFSDGVGYS WIDGLKDHAN KHVSDTMLSN ASFVFPDNTP LTKEAYYYRT 
       510        520        530        540        550
IFEKFFPKQS AARATVPGGP SIACSTAKAV EWDATWSKNL DPSGRAALGV 
       560        570 
HVAAYEEDKA AAAAKAGSDL VDPLPKNGT                       

Experimental Info

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>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><p><a href='../manual/conflict' target='_top'>More...</a></p>Sequence conflicti	484 – 484	1	V → F in AAC72837. (PubMed:9881155)Curated

Alternative sequence

Feature key	Position(s)	Length	Description	Graphical view	Feature identifier	Actions
<p>Describes the sequence of naturally occurring alternative protein isoform(s). The changes in the amino acid sequence may be due to alternative splicing, alternative promoter usage, alternative initiation, or ribosomal frameshifting. The information stored in this subsection is used to automatically construct alternative protein sequence(s) for display.</p><p><a href='../manual/var_seq' target='_top'>More...</a></p>Alternative sequencei	508 – 508	1	K → KQ in isoform 2. Curated		VSP_044714

Sequence databases

Genome annotation databases

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Coding sequence diversityⁱ

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

Sequence databases

3D structure databases

Protein-protein interaction databases

Protein family/group databases

Proteomic databases

Protocols and materials databases

Genome annotation databases

Organism-specific databases

Phylogenomic databases

Enzyme and pathway databases

Gene expression databases

Family and domain databases

<p>Contains the literature citations that are the sources of data used to annotate the entry. Each reference is numbered and contains several subsections allowing a precise description of a given citation.</p><p><a href='../manual/publications_section' target='_top'>More...</a></p>Publicationsⁱ

1. "Reciprocal regulation of distinct asparagine synthetase genes by light and metabolites in Arabidopsis thaliana."
   Lam H.M., Hsieh M.H., Coruzzi G.
   Plant J. 16:345-353(1998) [PubMed] [Europe PMC] [Abstract]
   Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1), TISSUE SPECIFICITY, INDUCTION.
2. "Structural analysis of Arabidopsis thaliana chromosome 5. X. Sequence features of the regions of 3,076,755 bp covered by sixty P1 and TAC clones."
   Sato S., Nakamura Y., Kaneko T., Katoh T., Asamizu E., Kotani H., Tabata S.
   DNA Res. 7:31-63(2000) [PubMed] [Europe PMC] [Abstract]
   Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
   Strain: cv. Columbia.
   
3. The Arabidopsis Information Resource (TAIR)
   Submitted (APR-2011) to the EMBL/GenBank/DDBJ databases
   Cited for: GENOME REANNOTATION.
   Strain: cv. Columbia.
   
4. "Empirical analysis of transcriptional activity in the Arabidopsis genome."
   Yamada K., Lim J., Dale J.M., Chen H., Shinn P., Palm C.J., Southwick A.M., Wu H.C., Kim C.J., Nguyen M., Pham P.K., Cheuk R.F., Karlin-Newmann G., Liu S.X., Lam B., Sakano H., Wu T., Yu G.

   , Miranda M., Quach H.L., Tripp M., Chang C.H., Lee J.M., Toriumi M.J., Chan M.M., Tang C.C., Onodera C.S., Deng J.M., Akiyama K., Ansari Y., Arakawa T., Banh J., Banno F., Bowser L., Brooks S.Y., Carninci P., Chao Q., Choy N., Enju A., Goldsmith A.D., Gurjal M., Hansen N.F., Hayashizaki Y., Johnson-Hopson C., Hsuan V.W., Iida K., Karnes M., Khan S., Koesema E., Ishida J., Jiang P.X., Jones T., Kawai J., Kamiya A., Meyers C., Nakajima M., Narusaka M., Seki M., Sakurai T., Satou M., Tamse R., Vaysberg M., Wallender E.K., Wong C., Yamamura Y., Yuan S., Shinozaki K., Davis R.W., Theologis A., Ecker J.R.
   Science 302:842-846(2003) [PubMed] [Europe PMC] [Abstract]
   Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 1).
   Strain: cv. Columbia.
   
5. "Correlation of ASN2 gene expression with ammonium metabolism in Arabidopsis."
   Wong H.K., Chan H.K., Coruzzi G.M., Lam H.M.
   Plant Physiol. 134:332-338(2004) [PubMed] [Europe PMC] [Abstract]
   Cited for: INDUCTION.
6. "An Arabidopsis mutant disrupted in ASN2 encoding asparagine synthetase 2 exhibits low salt stress tolerance."
   Maaroufi-Dguimi H., Debouba M., Gaufichon L., Clement G., Gouia H., Hajjaji A., Suzuki A.
   Plant Physiol. Biochem. 49:623-628(2011) [PubMed] [Europe PMC] [Abstract]
   Cited for: DISRUPTION PHENOTYPE.
7. "Arabidopsis thaliana ASN2 encoding asparagine synthetase is involved in the control of nitrogen assimilation and export during vegetative growth."
   Gaufichon L., Masclaux-Daubresse C., Tcherkez G., Reisdorf-Cren M., Sakakibara Y., Hase T., Clement G., Avice J.C., Grandjean O., Marmagne A., Boutet-Mercey S., Azzopardi M., Soulay F., Suzuki A.
   Plant Cell Environ. 36:328-342(2013) [PubMed] [Europe PMC] [Abstract]
   Cited for: FUNCTION, TISSUE SPECIFICITY, INDUCTION, DISRUPTION PHENOTYPE.

<p>Provides general information on the entry.</p><p><a href='../manual/entry_information_section' target='_top'>More...</a></p>Entry informationⁱ

<p>Contains any relevant information that doesn’t fit in any other defined sections</p><p><a href='../manual/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousⁱ

<p>UniProtKB Keywords constitute a <a target="_top" href="/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>Keywords - Technical termⁱ

Documents

1. Arabidopsis thaliana
   Arabidopsis thaliana: entries and gene names
2. PATHWAY comments
   Index of metabolic and biosynthesis pathways
3. SIMILARITY comments
   Index of protein domains and families

External Data

<p>Provides links to the UniProt Reference Clusters (<a href="/help/uniref">UniRef</a>). UniRef consists of clusters for UniProtKB sequences (including isoforms) and selected UniParc sequences, in order to obtain complete coverage of the sequence space at resolutions of 100%, 90% and 50% identity.</p><p><a href='../manual/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsⁱ