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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Burkholderia cenocepacia (strain AU 1054)
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)LengthDescriptionGraphical viewFeature identifierActions
Binding sitei581 – 5811Aminoacyl-adenylateUniRule annotation
Binding sitei625 – 6251ATPUniRule annotation
Metal bindingi908 – 9081ZincUniRule annotation
Metal bindingi911 – 9111ZincUniRule annotation
Metal bindingi928 – 9281ZincUniRule annotation
Metal bindingi931 – 9311ZincUniRule annotation

GO - Molecular functioni

  1. aminoacyl-tRNA editing activity Source: InterPro
  2. ATP binding Source: UniProtKB-HAMAP
  3. isoleucine-tRNA ligase activity Source: UniProtKB-HAMAP
  4. zinc ion binding Source: UniProtKB-HAMAP

GO - Biological processi

  1. isoleucyl-tRNA aminoacylation Source: UniProtKB-HAMAP
Complete GO annotation...

Keywords - Molecular functioni

Aminoacyl-tRNA synthetase, Ligase

Keywords - Biological processi

Protein biosynthesis

Keywords - Ligandi

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

Enzyme and pathway databases

BioCyciBCEN331271:GHKX-1946-MONOMER.

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:Bcen_1901
OrganismiBurkholderia cenocepacia (strain AU 1054)
Taxonomic identifieri331271 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaBurkholderialesBurkholderiaceaeBurkholderiaBurkholderia cepacia complex
ProteomesiUP000002400 Componenti: Chromosome 1

Subcellular locationi

  1. Cytoplasm UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 945945Isoleucine--tRNA ligasePRO_1000022045Add
BLAST

Proteomic databases

PRIDEiQ1BUA1.

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi331271.Bcen_1901.

Structurei

3D structure databases

ProteinModelPortaliQ1BUA1.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi66 – 7611"HIGH" regionAdd
BLAST
Motifi622 – 6265"KMSKS" region

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

eggNOGiCOG0060.
HOGENOMiHOG000246402.
KOiK01870.
OMAiVLGDWDN.
OrthoDBiEOG644ZM1.

Family and domain databases

Gene3Di1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPiMF_02002. Ile_tRNA_synth_type1.
InterProiIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
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_1a_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
IPR010663. Znf_DNA_glyclase/IsotRNA_synth.
[Graphical view]
PANTHERiPTHR11946:SF9. PTHR11946:SF9. 1 hit.
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.

Q1BUA1-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MSNKKADSKP QAKYPVNLLD TPFPMRGDLP KREPQWVKEW EARGIYEKIR
60 70 80 90 100
AASQGRPKFI LHDGPPYANG DIHLGHAVNK ILKDIVVKSR NMAGFDAPYV
110 120 130 140 150
PGWDCHGMPI EIQIEKQFGK SLPAAEVMSK ARAYATEQIE KQKVGFKRLG
160 170 180 190 200
VLGDWANPYK TMNFVNEAEE IRALGKIIEK GYVYRGLKPV NWCFDCGSAL
210 220 230 240 250
AEAEVEYKDR TDPTIDVMFA FAEPEKTAHA FGLPALPRAE GGIVIWTTTP
260 270 280 290 300
WTIPANQALN LHPEIIYALV DTERGLLIIA EERVEACMTD FKLTGRVVAT
310 320 330 340 350
APGVKLANLR FHHPLASAHP GYKRTAPVYL GDYVTTDTGT GVVHSSPAYG
360 370 380 390 400
IEDFMSCKAH GMTDSDFINP VMGDGRYIES LPLFGGLSIW DANPKIVDAL
410 420 430 440 450
NAAGSLLRSE KYTHSYMHCW RHKTPIIYRA TSQWFAGMDV TPQDGGKTLR
460 470 480 490 500
ETALEGVDAT AFYPSWGKQR LFSMIANRPD WTLSRQRQWG VPMAFFVHKE
510 520 530 540 550
TGELHPRTLE LLEEVAKRVE QSGIEAWQSL DPRELIGDDA NLYEKNRDTL
560 570 580 590 600
DVWFDSGTTH WHVLRGSHKD QLQFPADLYL EGSDQHRGWF HSSLLTASMI
610 620 630 640 650
DGRAPYKGLL THGFTVDGEG RKMSKSLGNG IDPHEVANRL GAEIIRLWIA
660 670 680 690 700
STDYSGELAI SEEILKRVTE GYRRIRNTLR FLLANLSDFD FAQHAVPVDE
710 720 730 740 750
WLEIDRYAVA FSQQLQTELL GHYEKYEFHP VVAKLQTYCS EDLGGFYLDV
760 770 780 790 800
LKDRLYTSAA DSRARRSAQT ALYHLTHGLL RVLAPFLSFT AEEAWKVFQP
810 820 830 840 850
ASDTIFTETY YAYPEVAGSA ALIEKWALLR DVRGSVTKAL EEARTANRIG
860 870 880 890 900
SSLQAEVAVH ASGARYDALT SLGDDLKFVL ITSAATVVKV DDEAQESVDV
910 920 930 940
AASKYQKCER CWHYREDVGA HAEHPTLCGR CFSNLFENGE IRSAA
Length:945
Mass (Da):105,892
Last modified:July 11, 2006 - v1
Checksum:i32CBB55C601BF99F
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000378 Genomic DNA. Translation: ABF76804.1.
RefSeqiYP_621777.1. NC_008060.1.

Genome annotation databases

EnsemblBacteriaiABF76804; ABF76804; Bcen_1901.
KEGGibcn:Bcen_1901.
PATRICi19047471. VBIBurCen11237_1981.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000378 Genomic DNA. Translation: ABF76804.1.
RefSeqiYP_621777.1. NC_008060.1.

3D structure databases

ProteinModelPortaliQ1BUA1.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi331271.Bcen_1901.

Proteomic databases

PRIDEiQ1BUA1.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiABF76804; ABF76804; Bcen_1901.
KEGGibcn:Bcen_1901.
PATRICi19047471. VBIBurCen11237_1981.

Phylogenomic databases

eggNOGiCOG0060.
HOGENOMiHOG000246402.
KOiK01870.
OMAiVLGDWDN.
OrthoDBiEOG644ZM1.

Enzyme and pathway databases

BioCyciBCEN331271:GHKX-1946-MONOMER.

Family and domain databases

Gene3Di1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPiMF_02002. Ile_tRNA_synth_type1.
InterProiIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
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_1a_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
IPR010663. Znf_DNA_glyclase/IsotRNA_synth.
[Graphical view]
PANTHERiPTHR11946:SF9. PTHR11946:SF9. 1 hit.
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...

Publicationsi

  1. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: AU 1054.

Entry informationi

Entry nameiSYI_BURCA
AccessioniPrimary (citable) accession number: Q1BUA1
Entry historyi
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: July 11, 2006
Last modified: April 1, 2015
This is version 71 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

External Data

Dasty 3

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 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.