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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Bacillus clausii (strain KSM-K16)
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 sitei553 – 5531Aminoacyl-adenylateUniRule annotation
Binding sitei597 – 5971ATPUniRule annotation
Metal bindingi888 – 8881ZincUniRule annotation
Metal bindingi891 – 8911ZincUniRule annotation
Metal bindingi908 – 9081ZincUniRule annotation
Metal bindingi911 – 9111ZincUniRule 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

BioCyciBCLA66692:GHMP-2410-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:ABC2342
OrganismiBacillus clausii (strain KSM-K16)
Taxonomic identifieri66692 [NCBI]
Taxonomic lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
ProteomesiUP000001168: Chromosome

Subcellular locationi

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 – 923923Isoleucine--tRNA ligasePRO_0000098348Add
BLAST

Proteomic databases

PRIDEiQ5WFI3.

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi66692.ABC2342.

Structurei

3D structure databases

ProteinModelPortaliQ5WFI3.
SMRiQ5WFI3. Positions 2-878.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi57 – 6711"HIGH" regionAdd
BLAST
Motifi594 – 5985"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.

Q5WFI3-1 [UniParc]FASTAAdd to Basket

« Hide

        10         20         30         40         50
MDYKQTLLMP KTAFPMRGNL PNSEPKRQEQ WEEMDIYKQV QERTEGRPYF
60 70 80 90 100
VLHDGPPYAN GDIHMGHALN KIIKDFIVRY KSMSGFHAPY VPGWDTHGLP
110 120 130 140 150
IETALTKNKK VDRKSMSIAD FRKLCEEYAL EQINSQRQQF MRLGVRGDWW
160 170 180 190 200
KPYITLEKEF EAEQIKVFGK MAKKGYIYKG KKPVYWSPSS ESALAEAEIE
210 220 230 240 250
YYDKRSASIY VAFQVADGKG VLPEDAALVI WTTTPWTIPA NLGITVHPQL
260 270 280 290 300
EYSVVRTGGR SFVVASGLLE HVQTELSWED VVVEKTVTGK ELDYIVCRHP
310 320 330 340 350
FYDRDSIVMN GEHVTLDAGT GCVHTAPGHG VDDFVVGQKY GLDVLCPIDD
360 370 380 390 400
KGIMTSEAPG FEGEFYDNIN KMVTEKLEAV GALLKLGFIT HSYPHDWRTK
410 420 430 440 450
KPVIFRATSQ WFASIANIRK ELLQAVANTE WIPAWGETRL HNMVRDRGDW
460 470 480 490 500
CISRQRAWGV PIPVFYGEDG TEIVSEETIE HVSNLFREHG SNVWFEREAK
510 520 530 540 550
DLLPPGFTSP HSPNGHFTKE TDIMDVWFDS GSSHQGVLRE RNDLVFPADL
560 570 580 590 600
YFEGSDQYRG WFNSSLSTSV AINGVAPYKG VLSHGFVMDG EGKKMSKSLG
610 620 630 640 650
NIVVPNTVMK QLGADILRLW VASVDYQADS RVSDSILKQV AETYRKIRNT
660 670 680 690 700
FRFLLGNLHD FDPKINAVPR DQLTGVHAFL LVRLNELTKR MHEGYNEYQF
710 720 730 740 750
LNVYNHFRNF CTVELSSFYM DISKDTLYIE HADHPERRAF QTVMYEVVTA
760 770 780 790 800
LTKLIAPILP HTADEVWENI PGVSEQSVQL TDMPTAEELS GTDELKAHWQ
810 820 830 840 850
AFMDIRADVL KALEVARNEK VIGKSLQASL TLYPNKQARA LLEATEGLKK
860 870 880 890 900
LFIVSNVQIA NEGDEVPAAA QQFADVAVLV EKAEGETCER CWQVSNTVGA
910 920
DEKHPTLCLS CAQTVTNHYN DVV
Length:923
Mass (Da):104,537
Last modified:November 23, 2004 - v1
Checksum:iE25EFE72971B29FD
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP006627 Genomic DNA. Translation: BAD64877.1.
RefSeqiYP_175838.1. NC_006582.1.

Genome annotation databases

EnsemblBacteriaiBAD64877; BAD64877; ABC2342.
GeneIDi3201308.
KEGGibcl:ABC2342.
PATRICi18924272. VBIBacCla58185_2499.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
AP006627 Genomic DNA. Translation: BAD64877.1.
RefSeqiYP_175838.1. NC_006582.1.

3D structure databases

ProteinModelPortaliQ5WFI3.
SMRiQ5WFI3. Positions 2-878.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi66692.ABC2342.

Proteomic databases

PRIDEiQ5WFI3.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiBAD64877; BAD64877; ABC2342.
GeneIDi3201308.
KEGGibcl:ABC2342.
PATRICi18924272. VBIBacCla58185_2499.

Phylogenomic databases

eggNOGiCOG0060.
HOGENOMiHOG000246402.
KOiK01870.
OMAiVLGDWDN.
OrthoDBiEOG644ZM1.

Enzyme and pathway databases

BioCyciBCLA66692:GHMP-2410-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. "The complete genome sequence of the alkaliphilic Bacillus clausii KSM-K16."
    Takaki Y., Kageyama Y., Shimamura S., Suzuki H., Nishi S., Hatada Y., Kawai S., Ito S., Horikoshi K.
    Submitted (OCT-2003) to the EMBL/GenBank/DDBJ databases
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: KSM-K16.

Entry informationi

Entry nameiSYI_BACSK
AccessioniPrimary (citable) accession number: Q5WFI3
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: November 23, 2004
Last modified: January 7, 2015
This is version 79 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, Reference 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.