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Q7VXK3 (SYI_BORPE) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 66. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
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Names and origin

Protein namesRecommended name:
Isoleucine--tRNA ligase
EC=6.1.1.5
Alternative name(s):
Isoleucyl-tRNA synthetase
Short name=IleRS
Gene names
Name:ileS
Ordered Locus Names:BP1753
OrganismBordetella pertussis (strain Tohama I / ATCC BAA-589 / NCTC 13251) [Reference proteome] [HAMAP]
Taxonomic identifier257313 [NCBI]
Taxonomic lineageBacteria › Proteobacteria › Betaproteobacteria › Burkholderiales › Alcaligenaceae › Bordetella ›

Protein attributes

Sequence length953 AA.
Sequence statusComplete.
Protein existenceInferred from homology

General annotation (Comments)

Function

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) By similarity. HAMAP-Rule MF_02002

Catalytic activity

ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile). HAMAP-Rule MF_02002

Cofactor

Binds 1 zinc ion per subunit By similarity.

Subunit structure

Monomer By similarity.

Subcellular location

Cytoplasm By similarity.

Domain

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)) By similarity. HAMAP-Rule MF_02002

Sequence similarities

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

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 953953Isoleucine--tRNA ligase HAMAP-Rule MF_02002
PRO_0000098359

Regions

Motif57 – 6711"HIGH" region HAMAP-Rule MF_02002
Motif623 – 6275"KMSKS" region HAMAP-Rule MF_02002

Sites

Metal binding9161Zinc By similarity
Metal binding9191Zinc By similarity
Metal binding9361Zinc By similarity
Metal binding9391Zinc By similarity
Binding site5821Aminoacyl-adenylate By similarity
Binding site6261ATP By similarity

Sequences

Sequence LengthMass (Da)Tools
Q7VXK3 [UniParc].

Last modified October 1, 2003. Version 1.
Checksum: 9041F73DA583FB9C

FASTA953105,587
        10         20         30         40         50         60 
MDYKKSLNLP DTPFPMRGDL AKREPGWVAE WEETQVYQAI RAASRGRPRF VLHDGPPYAN 

        70         80         90        100        110        120 
GDIHIGHAVN KILKDIIVKS RNMAGYDAHY VPGWDCHGMP IEIQIEKKYG KHLPVTEVQS 

       130        140        150        160        170        180 
KARAYALEQI DRQRKDFKRL GVLGDWHNPY LTMNFSNEAD EIRVLGRILE KGYVFRGLKP 

       190        200        210        220        230        240 
VNWCFDCGSA LAEAEVEYAD RVDPAIDVAF PFTDRGALAR AFGLDEVDAG AIVIWTTTPW 

       250        260        270        280        290        300 
TIPSNQALNV HPEIDYALVR VTPAPVHGPL LLLAQERVEP SLKAWGLEGE IIATAKGEAL 

       310        320        330        340        350        360 
EGLRFRHPLA AAAQGYDRTS PIYLGDYVTL DTGTGVVHSA PAYGIEDFVS CKAHGLADSD 

       370        380        390        400        410        420 
ILGPVMGDGK FVDSLPLFGG LSIWDANPRI VEALKLADSL MLVQKLSHSY MHCWRHKTPV 

       430        440        450        460        470        480 
IYRATSQWFA GMDVKPRDGG PSLRESALAG IDATAFYPAW GRARLHAMIA NRPDWTLSRQ 

       490        500        510        520        530        540 
RQWGVPMAFF VHKETGELHP RTVELLEQIA QRVEKGGIEA WQSLDPRELL GDEAELYEKN 

       550        560        570        580        590        600 
RDTLDVWFDS GSTHATVLGG KDGVLGGSHG AELAWPADLY LEGSDQHRGW FHSSLLTGCM 

       610        620        630        640        650        660 
LYGHPPYKGL LTHGFVVDGQ GRKMSKSVGN VIAPQKVSDS LGAEILRLWV ASTDYSGELS 

       670        680        690        700        710        720 
ISDEILKRVV ESYRRIRNTL RFLLANVADF DAVGQAVPYG ELFEIDRYAL AMTAQMQAEV 

       730        740        750        760        770        780 
QGHYERYDFH PAVSRLQTFC SEDLGAFYLD ILKDRLYTTA AGSAARRSAQ TALLDITQTL 

       790        800        810        820        830        840 
LKLMAPILSF TAEEAWKILA GSALAKQADA PRVTIFTEVY HALPPFADGE ALTAKWTRLR 

       850        860        870        880        890        900 
AIRAEVQRKL EEVRSAGAIG SSLQAEVDLY ANAADHDILA SLGDDLRFVL IVSRATVHAD 

       910        920        930        940        950 
ADDLRIEIAA SGHKKCERCW HWRPDVGQDA DHPEICGRCV SNLFGAGEPR TRA

« Hide

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		BX640416 Genomic DNA. Translation: CAE42039.1.
RefSeqNP_880465.1. NC_002929.2.

3D structure databases

ProteinModelPortalQ7VXK3.
ModBaseSearch...

Protein-protein interaction databases

STRING257313.BP1753.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaCAE42039; CAE42039; BP1753.
GeneID2665590.
KEGGbpe:BP1753.
PATRIC21156776. VBIBorPer7866_1882.

Phylogenomic databases

eggNOGCOG0060.
HOGENOMHOG000246402.
KOK01870.
OMAKQVLTHG.
ProtClustDBPRK05743.

Enzyme and pathway databases

BioCycBPER257313:BP1753-MONOMER.

Family and domain databases

Gene3D3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPMF_02002. Ile_tRNA_synth_type1.
InterProIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
IPR002301. Ile-tRNA-ligase.
IPR023585. Ile-tRNA-ligase_type1.
IPR014729. Rossmann-like_a/b/a_fold.
IPR009080. tRNAsynth_1a_anticodon-bd.
IPR013155. V/L/I-tRNA-synth_anticodon-bd.
IPR009008. Val/Leu/Ile-tRNA-synth_edit.
IPR010663. Znf_DNA_glyclase/IsotRNA_synth.
[Graphical view]
PANTHERPTHR11946:SF9. PTHR11946:SF9. 1 hit.
PfamPF08264. Anticodon_1. 1 hit.
PF00133. tRNA-synt_1. 1 hit.
PF06827. zf-FPG_IleRS. 1 hit.
[Graphical view]
PRINTSPR00984. TRNASYNTHILE.
SUPFAMSSF47323. tRNAsyn_1a_bind. 1 hit.
SSF50677. ValRS_IleRS_edit. 1 hit.
TIGRFAMsTIGR00392. ileS. 1 hit.
PROSITEPS00178. AA_TRNA_LIGASE_I. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameSYI_BORPE
AccessionPrimary (citable) accession number: Q7VXK3
Entry history
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: October 1, 2003
Last modified: May 1, 2013
This is version 66 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

Aminoacyl-tRNA synthetases

List of aminoacyl-tRNA synthetase entries

SIMILARITY comments

Index of protein domains and families

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