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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Shewanella sediminis (strain HAW-EB3)
Status
Reviewed-Annotation score: Annotation score: 3 out of 5-Protein inferred from homologyi

Functioni

Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS can inadvertently accommodate and process structurally similar amino acids such as valine, to avoid such errors it has two additional distinct tRNA(Ile)-dependent editing activities. One activity is designated as 'pretransfer' editing and involves the hydrolysis of activated Val-AMP. The other activity is designated 'posttransfer' editing and involves deacylation of mischarged Val-tRNA(Ile).UniRule annotation

Catalytic activityi

ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile).UniRule annotation

Cofactori

Zn2+UniRule annotationNote: Binds 1 zinc ion per subunit.UniRule annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei564Aminoacyl-adenylateUniRule annotation1
Binding sitei608ATPUniRule annotation1
Metal bindingi903ZincUniRule annotation1
Metal bindingi906ZincUniRule annotation1
Metal bindingi923ZincUniRule annotation1
Metal bindingi926ZincUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Aminoacyl-tRNA synthetase, Ligase

Keywords - Biological processi

Protein biosynthesis

Keywords - Ligandi

ATP-binding, Metal-binding, Nucleotide-binding, Zinc

Names & Taxonomyi

Protein namesi
Recommended name:
Isoleucine--tRNA ligaseUniRule annotation (EC:6.1.1.5UniRule annotation)
Alternative name(s):
Isoleucyl-tRNA synthetaseUniRule annotation
Short name:
IleRSUniRule annotation
Gene namesi
Name:ileSUniRule annotation
Ordered Locus Names:Ssed_1194
OrganismiShewanella sediminis (strain HAW-EB3)
Taxonomic identifieri425104 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaAlteromonadalesShewanellaceaeShewanella
Proteomesi
  • UP000002015 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000885561 – 940Isoleucine--tRNA ligaseAdd BLAST940

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi425104.Ssed_1194.

Structurei

3D structure databases

ProteinModelPortaliA8FSI2.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi58 – 68"HIGH" regionAdd BLAST11
Motifi605 – 609"KMSKS" region5

Domaini

IleRS has two distinct active sites: one for aminoacylation and one for editing. The misactivated valine is translocated from the active site to the editing site, which sterically excludes the correctly activated isoleucine. The single editing site contains two valyl binding pockets, one specific for each substrate (Val-AMP or Val-tRNA(Ile)).UniRule annotation

Sequence similaritiesi

Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 1 subfamily.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105C07. Bacteria.
COG0060. LUCA.
HOGENOMiHOG000246402.
KOiK01870.
OMAiPIPFFLH.
OrthoDBiPOG091H028I.

Family and domain databases

CDDicd07960. Anticodon_Ia_Ile_BEm. 1 hit.
Gene3Di1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPiMF_02002. Ile_tRNA_synth_type1. 1 hit.
InterProiIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
IPR033708. Anticodon_Ile_BEm.
IPR002301. Ile-tRNA-ligase.
IPR023585. Ile-tRNA-ligase_type1.
IPR013155. M/V/L/I-tRNA-synth_anticd-bd.
IPR014729. Rossmann-like_a/b/a_fold.
IPR009080. tRNAsynth_Ia_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
IPR010663. Znf_FPG/IleRS.
[Graphical view]
PfamiPF08264. Anticodon_1. 1 hit.
PF00133. tRNA-synt_1. 1 hit.
PF06827. zf-FPG_IleRS. 1 hit.
[Graphical view]
PRINTSiPR00984. TRNASYNTHILE.
SUPFAMiSSF47323. SSF47323. 1 hit.
SSF50677. SSF50677. 1 hit.
TIGRFAMsiTIGR00392. ileS. 1 hit.
PROSITEiPS00178. AA_TRNA_LIGASE_I. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

A8FSI2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSDYKSTLNL PETEFPMRGN LANREPVMLK SWTEDGLYQQ IRDSRIGRKP
60 70 80 90 100
FILHDGPPYA NGSIHIGHSV NKILKDIIVK SKTLSGFDAP YIPGWDCHGL
110 120 130 140 150
PIELKVEQKV GKPGHKVTAA QFREKCREYA AKQVDGQRED FIRLGVFADW
160 170 180 190 200
NKPYLTMDFD TEANIVRSLA KVIDSGHLHK GVKPVHWCTD CGSALAEAEV
210 220 230 240 250
EYEDKKSPAI DVAFAATDKA ALLAKFDVQD CTGSASMVIW TTTPWTLPAN
260 270 280 290 300
RALSVSPELD YVLVEFVKDG ATSTVILADA LVESCMERYG VESHKALGKA
310 320 330 340 350
KGQELELLRF NHPFYDFDVP VILGDHVTVD SGTGVVHTAP GHGQDDFVVG
360 370 380 390 400
QKYGLEVANP VGDNGVYKAD TEIFAGQHVF KANDNVVALL EEKGALIKHE
410 420 430 440 450
KIMHSYPHCW RHKTPIIFRA TPQWFISMDQ KGLRKQALGE IEQTQWIPDW
460 470 480 490 500
GQSRIEKMVE NRPDWCISRQ RTWGVPITLF VHRETEELHP DSISLMERVA
510 520 530 540 550
NRIEREGIQA WWDLDAQELL GDEAEQYRKV TDTLDVWYDS GSSFSSVVAS
560 570 580 590 600
RPEYQGHEID LYLEGSDQHR GWFMSSLMIS TAMNGKAPYK QVLTHGFTVD
610 620 630 640 650
GNGRKMSKSI GNVIAPQTVT NKLGADILRL WVAATDYSGE MTVSDEILKR
660 670 680 690 700
SADAYRRIRN TARFLLANIN GFDPVNDLVA VEEMVALDRW VVRRAAALQE
710 720 730 740 750
ELIEAYEQYN FHVVTQKLMQ FCSVELGSFY LDIIKDRQYT AKGDSVARRS
760 770 780 790 800
CQSALYLISE AMVRWIAPIL SFTADEIWQL LPGEREKYVF TQEWYQGLES
810 820 830 840 850
VTLDSDLSDE YWEQLLTVRG EVNKVIEQAR REKQIGGSLE AEITLYADDA
860 870 880 890 900
LSQALATLGD ELRFVLLTSK TQIVALSSAP ADAIETEMTS LKLGLHKAES
910 920 930 940
EKCERCWHHR EDVGQVEAHP TLCTRCVTNI EGDGEVRQFA
Length:940
Mass (Da):105,890
Last modified:November 13, 2007 - v1
Checksum:i927A9D0981B2A2BB
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000821 Genomic DNA. Translation: ABV35805.1.
RefSeqiWP_012141541.1. NC_009831.1.

Genome annotation databases

EnsemblBacteriaiABV35805; ABV35805; Ssed_1194.
KEGGisse:Ssed_1194.
PATRICi23559708. VBISheSed62411_1264.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000821 Genomic DNA. Translation: ABV35805.1.
RefSeqiWP_012141541.1. NC_009831.1.

3D structure databases

ProteinModelPortaliA8FSI2.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi425104.Ssed_1194.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABV35805; ABV35805; Ssed_1194.
KEGGisse:Ssed_1194.
PATRICi23559708. VBISheSed62411_1264.

Phylogenomic databases

eggNOGiENOG4105C07. Bacteria.
COG0060. LUCA.
HOGENOMiHOG000246402.
KOiK01870.
OMAiPIPFFLH.
OrthoDBiPOG091H028I.

Family and domain databases

CDDicd07960. Anticodon_Ia_Ile_BEm. 1 hit.
Gene3Di1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPiMF_02002. Ile_tRNA_synth_type1. 1 hit.
InterProiIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
IPR033708. Anticodon_Ile_BEm.
IPR002301. Ile-tRNA-ligase.
IPR023585. Ile-tRNA-ligase_type1.
IPR013155. M/V/L/I-tRNA-synth_anticd-bd.
IPR014729. Rossmann-like_a/b/a_fold.
IPR009080. tRNAsynth_Ia_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
IPR010663. Znf_FPG/IleRS.
[Graphical view]
PfamiPF08264. Anticodon_1. 1 hit.
PF00133. tRNA-synt_1. 1 hit.
PF06827. zf-FPG_IleRS. 1 hit.
[Graphical view]
PRINTSiPR00984. TRNASYNTHILE.
SUPFAMiSSF47323. SSF47323. 1 hit.
SSF50677. SSF50677. 1 hit.
TIGRFAMsiTIGR00392. ileS. 1 hit.
PROSITEiPS00178. AA_TRNA_LIGASE_I. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiSYI_SHESH
AccessioniPrimary (citable) accession number: A8FSI2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: May 20, 2008
Last sequence update: November 13, 2007
Last modified: November 2, 2016
This is version 69 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome

Documents

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

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.