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UniProtKB - P21889 (SYD_ECOLI)

Entry version 191 (07 Apr 2021)
Sequence version 1 (01 May 1991)
Previous versions | rss
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Protein

Aspartate--tRNA ligase

Gene

aspS

Organism
Escherichia coli (strain K12)
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

Catalyzes the attachment of L-aspartate to tRNA(Asp) in a two-step reaction: L-aspartate is first activated by ATP to form Asp-AMP and then transferred to the acceptor end of tRNA(Asp). Also mischarges tRNA(Asp) with D-aspartate, although it is a poor substrate (PubMed:10918062).UniRule annotation1 Publication

<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

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<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 sitei171AspartateUniRule annotation1
Binding sitei217AspartateUniRule annotation1
Binding sitei226ATPUniRule annotation1
Binding sitei448AspartateUniRule annotation1
Binding sitei482ATPUniRule annotation1
Binding sitei489AspartateUniRule annotation1

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 bindingi217 – 219ATPUniRule annotation3
Nucleotide bindingi534 – 537ATPUniRule annotation4

<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

Complete GO annotation on QuickGO ...

GO - Biological processi

Complete GO annotation on QuickGO ...

<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 functionAminoacyl-tRNA synthetase, Ligase
Biological processProtein biosynthesis
LigandATP-binding, Nucleotide-binding

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...BioCyci		EcoCyc:ASPS-MONOMER
MetaCyc:ASPS-MONOMER

BRENDA Comprehensive Enzyme Information System

More...BRENDAi		6.1.1.12, 2026

SABIO-RK: Biochemical Reaction Kinetics Database

More...SABIO-RKi		P21889

<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:
Aspartate--tRNA ligaseUniRule annotation (EC:6.1.1.12UniRule annotation1 Publication)
Alternative name(s):
Aspartyl-tRNA synthetaseUniRule annotation
Short name:
AspRSUniRule annotation
<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:aspSUniRule annotation
Synonyms:tls
Ordered Locus Names:b1866, JW1855
<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>OrganismiEscherichia coli (strain K12)
<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 identifieri83333 [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 lineageiBacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
<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
  • UP000000318 <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
  • UP000000625 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

Keywords - Cellular componenti

Cytoplasm

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Chemistry databases

ChEMBL database of bioactive drug-like small molecules

More...ChEMBLi		CHEMBL4295574

<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 '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_00001108681 – 590Aspartate--tRNA ligaseAdd BLAST590

Proteomic databases

jPOST - Japan Proteome Standard Repository/Database

More...jPOSTi		P21889

PaxDb, a database of protein abundance averages across all three domains of life

More...PaxDbi		P21889

PRoteomics IDEntifications database

More...PRIDEi		P21889

2D gel databases

Two-dimensional polyacrylamide gel electrophoresis database from the Geneva University Hospital

More...SWISS-2DPAGEi		P21889

<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

Homodimer.

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGRID)

More...BioGRIDi		4259330, 32 interactors

Database of interacting proteins

More...DIPi		DIP-9182N

Protein interaction database and analysis system

More...IntActi		P21889, 27 interactors

STRING: functional protein association networks

More...STRINGi		511145.b1866

Chemistry databases

BindingDB database of measured binding affinities

More...BindingDBi		P21889

<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

Secondary structure

1590
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

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

More...SMRi		P21889

Database of comparative protein structure models

More...ModBasei		Search...

Protein Data Bank in Europe - Knowledge Base

More...PDBe-KBi		Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...EvolutionaryTracei		P21889

<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>Regioni195 – 198AspartateUniRule annotation4

<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 class-II aminoacyl-tRNA synthetase family. Type 1 subfamily.UniRule annotation

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...eggNOGi		COG0173, Bacteria

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...HOGENOMi		CLU_014330_3_2_6

InParanoid: Eukaryotic Ortholog Groups

More...InParanoidi		P21889

Database for complete collections of gene phylogenies

More...PhylomeDBi		P21889

Family and domain databases

Gene3D Structural and Functional Annotation of Protein Families

More...Gene3Di		3.30.1360.30, 1 hit

HAMAP database of protein families

More...HAMAPi		MF_00044, Asp_tRNA_synth_type1, 1 hit

Integrated resource of protein families, domains and functional sites

More...InterProi		View protein in InterPro
IPR004364, Aa-tRNA-synt_II
IPR006195, aa-tRNA-synth_II
IPR004524, Asp-tRNA-ligase_1
IPR002312, Asp/Asn-tRNA-synth_IIb
IPR004115, GAD-like_sf
IPR029351, GAD_dom
IPR012340, NA-bd_OB-fold
IPR004365, NA-bd_OB_tRNA

The PANTHER Classification System

More...PANTHERi		PTHR22594:SF5, PTHR22594:SF5, 1 hit

Pfam protein domain database

More...Pfami		View protein in Pfam
PF02938, GAD, 1 hit
PF00152, tRNA-synt_2, 1 hit
PF01336, tRNA_anti-codon, 1 hit

Protein Motif fingerprint database; a protein domain database

More...PRINTSi		PR01042, TRNASYNTHASP

Superfamily database of structural and functional annotation

More...SUPFAMi		SSF50249, SSF50249, 1 hit
SSF55261, SSF55261, 1 hit

TIGRFAMs; a protein family database

More...TIGRFAMsi		TIGR00459, aspS_bact, 1 hit

PROSITE; a protein domain and family database

More...PROSITEi		View protein in PROSITE
PS50862, AA_TRNA_LIGASE_II, 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.

P21889-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MRTEYCGQLR LSHVGQQVTL CGWVNRRRDL GSLIFIDMRD REGIVQVFFD 
        60         70         80         90        100
PDRADALKLA SELRNEFCIQ VTGTVRARDE KNINRDMATG EIEVLASSLT 
       110        120        130        140        150
IINRADVLPL DSNHVNTEEA RLKYRYLDLR RPEMAQRLKT RAKITSLVRR 
       160        170        180        190        200
FMDDHGFLDI ETPMLTKATP EGARDYLVPS RVHKGKFYAL PQSPQLFKQL 
       210        220        230        240        250
LMMSGFDRYY QIVKCFRDED LRADRQPEFT QIDVETSFMT APQVREVMEA 
       260        270        280        290        300
LVRHLWLEVK GVDLGDFPVM TFAEAERRYG SDKPDLRNPM ELTDVADLLK 
       310        320        330        340        350
SVEFAVFAGP ANDPKGRVAA LRVPGGASLT RKQIDEYGNF VKIYGAKGLA 
       360        370        380        390        400
YIKVNERAKG LEGINSPVAK FLNAEIIEDI LDRTAAQDGD MIFFGADNKK 
       410        420        430        440        450
IVADAMGALR LKVGKDLGLT DESKWAPLWV IDFPMFEDDG EGGLTAMHHP 
       460        470        480        490        500
FTSPKDMTAA ELKAAPENAV ANAYDMVING YEVGGGSVRI HNGDMQQTVF 
       510        520        530        540        550
GILGINEEEQ REKFGFLLDA LKYGTPPHAG LAFGLDRLTM LLTGTDNIRD 
       560        570        580        590
VIAFPKTTAA ACLMTEAPSF ANPTALAELS IQVVKKAENN
Length:590
Mass (Da):65,913
Last modified:May 1, 1991 - v1
<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:iA411D3E16D3A9284
GO

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
X53863 Genomic DNA Translation: CAA37856.1
U00096 Genomic DNA Translation: AAC74936.1
AP009048 Genomic DNA Translation: BAA15677.1
X53984 Genomic DNA Translation: CAA37932.1
D10165 Genomic DNA No translation available.

Protein sequence database of the Protein Information Resource

More...PIRi		JT0942, SYECD

NCBI Reference Sequences

More...RefSeqi		NP_416380.1, NC_000913.3
WP_001258678.1, NZ_SSZK01000001.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...EnsemblBacteriai		AAC74936; AAC74936; b1866
BAA15677; BAA15677; BAA15677

Database of genes from NCBI RefSeq genomes

More...GeneIDi		946385

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...KEGGi		ecj:JW1855
eco:b1866

Pathosystems Resource Integration Center (PATRIC)

More...PATRICi		fig|1411691.4.peg.382

<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
X53863 Genomic DNA Translation: CAA37856.1
U00096 Genomic DNA Translation: AAC74936.1
AP009048 Genomic DNA Translation: BAA15677.1
X53984 Genomic DNA Translation: CAA37932.1
D10165 Genomic DNA No translation available.
PIRiJT0942, SYECD
RefSeqiNP_416380.1, NC_000913.3
WP_001258678.1, NZ_SSZK01000001.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...PDBei

Protein Data Bank RCSB

More...RCSB PDBi

Protein Data Bank Japan

More...PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1C0AX-ray2.40A1-585[»]
1EQRX-ray2.70A/B/C1-590[»]
1IL2X-ray2.60A/B1-590[»]
SMRiP21889
ModBaseiSearch...
PDBe-KBiSearch...

Protein-protein interaction databases

BioGRIDi4259330, 32 interactors
DIPiDIP-9182N
IntActiP21889, 27 interactors
STRINGi511145.b1866

Chemistry databases

BindingDBiP21889
ChEMBLiCHEMBL4295574

2D gel databases

SWISS-2DPAGEiP21889

Proteomic databases

jPOSTiP21889
PaxDbiP21889
PRIDEiP21889

Genome annotation databases

EnsemblBacteriaiAAC74936; AAC74936; b1866
BAA15677; BAA15677; BAA15677
GeneIDi946385
KEGGiecj:JW1855
eco:b1866
PATRICifig|1411691.4.peg.382

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...EchoBASEi		EB0095

Phylogenomic databases

eggNOGiCOG0173, Bacteria
HOGENOMiCLU_014330_3_2_6
InParanoidiP21889
PhylomeDBiP21889

Enzyme and pathway databases

BioCyciEcoCyc:ASPS-MONOMER
MetaCyc:ASPS-MONOMER
BRENDAi6.1.1.12, 2026
SABIO-RKiP21889

Miscellaneous databases

EvolutionaryTraceiP21889

Protein Ontology

More...PROi		PR:P21889

Family and domain databases

Gene3Di3.30.1360.30, 1 hit
HAMAPiMF_00044, Asp_tRNA_synth_type1, 1 hit
InterProiView protein in InterPro
IPR004364, Aa-tRNA-synt_II
IPR006195, aa-tRNA-synth_II
IPR004524, Asp-tRNA-ligase_1
IPR002312, Asp/Asn-tRNA-synth_IIb
IPR004115, GAD-like_sf
IPR029351, GAD_dom
IPR012340, NA-bd_OB-fold
IPR004365, NA-bd_OB_tRNA
PANTHERiPTHR22594:SF5, PTHR22594:SF5, 1 hit
PfamiView protein in Pfam
PF02938, GAD, 1 hit
PF00152, tRNA-synt_2, 1 hit
PF01336, tRNA_anti-codon, 1 hit
PRINTSiPR01042, TRNASYNTHASP
SUPFAMiSSF50249, SSF50249, 1 hit
SSF55261, SSF55261, 1 hit
TIGRFAMsiTIGR00459, aspS_bact, 1 hit
PROSITEiView protein in PROSITE
PS50862, AA_TRNA_LIGASE_II, 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 nameiSYD_ECOLI
<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: P21889
<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: May 1, 1991
Last sequence update: May 1, 1991
Last modified: April 7, 2021
This is version 191 of the entry and version 1 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

3D-structure, Reference proteome

Documents

  1. Aminoacyl-tRNA synthetases
    List of aminoacyl-tRNA synthetase entries
  2. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  3. SIMILARITY comments
    Index of protein domains and families
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