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Entry version 117 (16 Oct 2019)
Sequence version 1 (01 Nov 1998)
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Protein

Methionine--tRNA ligase

Gene

metG

Organism
Chlamydia trachomatis (strain D/UW-3/Cx)
Status
Reviewed-Annotation score:

Annotation score:3 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>
-Protein inferred from homologyi <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

Is required not only for elongation of protein synthesis but also for the initiation of all mRNA translation through initiator tRNA(fMet) aminoacylation.By similarity

<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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

Zn2+By similarityNote: Binds 1 zinc ion per subunit.By similarity

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 bindingi145ZincBy similarity1
Metal bindingi148ZincBy similarity1
Metal bindingi158ZincBy similarity1
Metal bindingi161ZincBy similarity1
<p>This subsection of the <a href="http://www.uniprot.org/help/function_section">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 sitei334ATPBy similarity1

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

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
CTRA272561:G1G18-34-MONOMER

<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_and_taxonomy_section">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:
Methionine--tRNA ligase (EC:6.1.1.10)
Alternative name(s):
Methionyl-tRNA synthetase
Short name:
MetRS
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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:metG
Ordered Locus Names:CT_032
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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>OrganismiChlamydia trachomatis (strain D/UW-3/Cx)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 identifieri272561 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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 lineageiBacteriaChlamydiaeChlamydialesChlamydiaceaeChlamydia/Chlamydophila groupChlamydia
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">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
  • UP000000431 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">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 ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001391231 – 550Methionine--tRNA ligaseAdd BLAST550

<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_section">'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_section">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

Monomer.

By similarity

<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
O84035

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

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘Family and Domains’ section describes a short (usually not more than 20 amino acids) conserved sequence motif of biological significance.<p><a href='/help/motif' target='_top'>More...</a></p>Motifi13 – 23'HIGH' regionAdd BLAST11
Motifi331 – 335'KMSKS' region5

<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

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105CKH Bacteria
COG0143 LUCA

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
O84035

KEGG Orthology (KO)

More...
KOi
K01874

Identification of Orthologs from Complete Genome Data

More...
OMAi
SDMHGTP

Family and domain databases

Conserved Domains Database

More...
CDDi
cd07957 Anticodon_Ia_Met, 1 hit
cd00814 MetRS_core, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
2.20.28.20, 1 hit
3.40.50.620, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_00098 Met_tRNA_synth_type1, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR041872 Anticodon_Met
IPR013155 M/V/L/I-tRNA-synth_anticd-bd
IPR023458 Met-tRNA_ligase_1
IPR014758 Met-tRNA_synth
IPR015413 Methionyl/Leucyl_tRNA_Synth
IPR033911 MetRS_core
IPR029038 MetRS_Zn
IPR014729 Rossmann-like_a/b/a_fold
IPR009080 tRNAsynth_Ia_anticodon-bd

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF08264 Anticodon_1, 1 hit
PF09334 tRNA-synt_1g, 1 hit

Protein Motif fingerprint database; a protein domain database

More...
PRINTSi
PR01041 TRNASYNTHMET

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF47323 SSF47323, 1 hit
SSF57770 SSF57770, 1 hit

TIGRFAMs; a protein family database

More...
TIGRFAMsi
TIGR00398 metG, 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_length">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_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">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.

O84035-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MESSRILITS ALPYANGPLH FGHITGAYLP ADVYARFQRL QGKEVLYICG
60 70 80 90 100
SDEYGIAITL NAELAGMGYQ EYVDMYHKLH KDTFKKLGIS VDFFSRTTNT
110 120 130 140 150
YHPAIVQDFY RNLQERGLVE NQVTEQLYSE EEGKFLADRY VVGTCPKCGF
160 170 180 190 200
DRARGDECQQ CGADYEARDL KEPRSKLTGA ALSLRDTEHA YLHLERMKED
210 220 230 240 250
LLAFVQGIYL RPHMRNFVTD YIEHLRPRAV TRDLSWGIPV PDLENKVFYV
260 270 280 290 300
WFDAPIGYIS GTMDWAASIG DPEAWKKFWL DDTVTYAQFI GKDNTSFHAA
310 320 330 340 350
IFPAMEIGQS LPYKKVDALV TSEFLLLEGF QFSKSDGNFI DMDAFLETYS
360 370 380 390 400
LDKLRYVLAA IAPETSDSEF SFQEFKTRCN SELVGKYGNF VNRVLAFAVK
410 420 430 440 450
NGCTELSSPQ LEQKDLDFIS KSQKLAKDAA EHYAQYSLRK ACSTIMELAA
460 470 480 490 500
LGNGYFNDEA PWKLAKEGNW NRVRAILFCA CYCQKLLALI SYPIMPETAL
510 520 530 540 550
KILEMIAPHS LDLGSQDPDR LQSLWTDSFF DYSEEKFSLK EPELLFTMVE
Length:550
Mass (Da):62,716
Last modified:November 1, 1998 - 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:iB829F13C23D5E9C5
GO

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

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EMBLi

GenBank nucleotide sequence database

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GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
AE001273 Genomic DNA Translation: AAC67622.1

Protein sequence database of the Protein Information Resource

More...
PIRi
C71567

NCBI Reference Sequences

More...
RefSeqi
NP_219534.1, NC_000117.1
WP_010724990.1, NC_000117.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC67622; AAC67622; CT_032

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
884148

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ctr:CT_032

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|272561.5.peg.37

<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
AE001273 Genomic DNA Translation: AAC67622.1
PIRiC71567
RefSeqiNP_219534.1, NC_000117.1
WP_010724990.1, NC_000117.1

3D structure databases

SMRiO84035
ModBaseiSearch...

Genome annotation databases

EnsemblBacteriaiAAC67622; AAC67622; CT_032
GeneIDi884148
KEGGictr:CT_032
PATRICifig|272561.5.peg.37

Phylogenomic databases

eggNOGiENOG4105CKH Bacteria
COG0143 LUCA
InParanoidiO84035
KOiK01874
OMAiSDMHGTP

Enzyme and pathway databases

BioCyciCTRA272561:G1G18-34-MONOMER

Family and domain databases

CDDicd07957 Anticodon_Ia_Met, 1 hit
cd00814 MetRS_core, 1 hit
Gene3Di2.20.28.20, 1 hit
3.40.50.620, 1 hit
HAMAPiMF_00098 Met_tRNA_synth_type1, 1 hit
InterProiView protein in InterPro
IPR041872 Anticodon_Met
IPR013155 M/V/L/I-tRNA-synth_anticd-bd
IPR023458 Met-tRNA_ligase_1
IPR014758 Met-tRNA_synth
IPR015413 Methionyl/Leucyl_tRNA_Synth
IPR033911 MetRS_core
IPR029038 MetRS_Zn
IPR014729 Rossmann-like_a/b/a_fold
IPR009080 tRNAsynth_Ia_anticodon-bd
PfamiView protein in Pfam
PF08264 Anticodon_1, 1 hit
PF09334 tRNA-synt_1g, 1 hit
PRINTSiPR01041 TRNASYNTHMET
SUPFAMiSSF47323 SSF47323, 1 hit
SSF57770 SSF57770, 1 hit
TIGRFAMsiTIGR00398 metG, 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 nameiSYM_CHLTR
<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: O84035
<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_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: May 30, 2000
Last sequence update: November 1, 1998
Last modified: October 16, 2019
This is version 117 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

Complete proteome, Reference proteome

Documents

  1. Aminoacyl-tRNA synthetases
    List of aminoacyl-tRNA synthetase entries
  2. SIMILARITY comments
    Index of protein domains and families
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