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Q486U0 (SYI_COLP3) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 67. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (2) | Third-party data text xml rdf/xml gff fasta
to top of pageNames·Attributes·General annotation·Ontologies·Sequence annotation·Sequences·References·Cross-refs·Entry info·DocumentsCustomize order

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:CPS_1182
OrganismColwellia psychrerythraea (strain 34H / ATCC BAA-681) (Vibrio psychroerythus) [Complete proteome] [HAMAP]
Taxonomic identifier167879 [NCBI]
Taxonomic lineageBacteriaProteobacteriaGammaproteobacteriaAlteromonadalesColwelliaceaeColwellia

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. HAMAP-Rule MF_02002

Subunit structure

Monomer By similarity. HAMAP-Rule MF_02002

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_02002.

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.

Ontologies

Keywords
   Biological processProtein biosynthesis
   Cellular componentCytoplasm
   LigandATP-binding
Metal-binding
Nucleotide-binding
Zinc
   Molecular functionAminoacyl-tRNA synthetase
Ligase
   Technical termComplete proteome
Gene Ontology (GO)
   Biological_processisoleucyl-tRNA aminoacylation

Inferred from electronic annotation. Source: UniProtKB-HAMAP

   Cellular_componentcytoplasm

Inferred from electronic annotation. Source: UniProtKB-SubCell

   Molecular_functionATP binding

Inferred from electronic annotation. Source: UniProtKB-HAMAP

aminoacyl-tRNA editing activity

Inferred from electronic annotation. Source: InterPro

isoleucine-tRNA ligase activity

Inferred from electronic annotation. Source: UniProtKB-HAMAP

zinc ion binding

Inferred from electronic annotation. Source: UniProtKB-HAMAP

Complete GO annotation...

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifier

Molecule processing

Chain1 – 953953Isoleucine--tRNA ligase HAMAP-Rule MF_02002
PRO_0000098376

Regions

Motif58 – 6811"HIGH" region HAMAP-Rule MF_02002
Motif606 – 6105"KMSKS" region HAMAP-Rule MF_02002

Sites

Metal binding9161Zinc By similarity
Metal binding9191Zinc By similarity
Metal binding9361Zinc By similarity
Metal binding9391Zinc By similarity
Binding site5651Aminoacyl-adenylate By similarity
Binding site6091ATP By similarity

Sequences

Sequence LengthMass (Da)Tools
Q486U0 [UniParc].

Last modified September 13, 2005. Version 1.
Checksum: B6FDAC59AA903A26

FASTA953106,844
        10         20         30         40         50         60 
MSDYKQTLNL PATSFAMKGN MANREPNMLK YWAAKDLYGK IREAKKGKKS FILHDGPPYA 

        70         80         90        100        110        120 
NGNIHLGHAV NKILKDIIVK SKNLSDFNSP FVPGWDCHGL PIELMVEKKV GKPGHKISAS 

       130        140        150        160        170        180 
DFRQKCREYA AKQVNGQRED FKRLGIFADW EKPYLTMDFG TEANIIRSLG KIAENGHLHQ 

       190        200        210        220        230        240 
GFKPVHWCTD CGSSLAEAEV EYKDKQSPAI DVKFTISDES VADKFSHPEG HKGEGEIGAV 

       250        260        270        280        290        300 
IWTTTPWTLP ANRAIAVNAE VEYTLVQCEQ AGEKQRLIIA SDLVTTCMDR FGFDKYHALG 

       310        320        330        340        350        360 
FCKGSELELV QCQHPFYDFT VPVVLGEHVT TDSGTGCVHT APGHGVEDFV VGKLYDLEVA 

       370        380        390        400        410        420 
NPVGANGVYL EDTPLLAGQH VFKANASVVE LLKEKGALVH HHALDHSYPH CWRHKTPLIF 

       430        440        450        460        470        480 
RATPQWFISM DKKGLRQDSL NEIEKTQWIP DWGQRRIESM VEGRPDWCIS RQRTWGVPMA 

       490        500        510        520        530        540 
LFIHQDSGAL HPRSIELIEE VALLVEKSGI QAWFDLEAIE LIGDDAKEYI KVPDTLDVWF 

       550        560        570        580        590        600 
DSGTTHESVI KARDEFDGIA DLYLEGSDQH RGWFMSSMIS SVAMNGAAPY KQVLTHGFVV 

       610        620        630        640        650        660 
DAKGHKMSKS LGNVITPKEI TNNLGADILR LWTASVNYTQ EITAGDEIFK RQADAYRRIR 

       670        680        690        700        710        720 
NTSRFLLSNL TGFEPANHMV AVEDMVALDR WVIDKAARLQ EEIINAYDEY EFHVVVHKLM 

       730        740        750        760        770        780 
NFCTNELGGF YLDIIKDRQY TAKSDSNARR SCQTAMYLIA EAMTAWMAPI LSFTAQEIWE 

       790        800        810        820        830        840 
ALPLPVSGER DEFVFTGVWF DGLMKQESKQ DESTESSDEL GNEYWTELLT VRGEVNRALE 

       850        860        870        880        890        900 
QARKDKSVGK ALEAQVTLFA TADLAAKLAK LGDELRFVLI TSKATIETVT SAPENALETE 

       910        920        930        940        950 
VEGLWLTVAP AEGIKCERCW HVTTDIGESE KHPTLCGRCI TNIDGEGETR QFA 

« Hide

References

[1]"The psychrophilic lifestyle as revealed by the genome sequence of Colwellia psychrerythraea 34H through genomic and proteomic analyses."
Methe B.A., Nelson K.E., Deming J.W., Momen B., Melamud E., Zhang X., Moult J., Madupu R., Nelson W.C., Dodson R.J., Brinkac L.M., Daugherty S.C., Durkin A.S., DeBoy R.T., Kolonay J.F., Sullivan S.A., Zhou L., Davidsen T.M. expand/collapse author list , Wu M., Huston A.L., Lewis M., Weaver B., Weidman J.F., Khouri H., Utterback T.R., Feldblyum T.V., Fraser C.M.
Proc. Natl. Acad. Sci. U.S.A. 102:10913-10918(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: 34H / ATCC BAA-681.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
CP000083 Genomic DNA. Translation: AAZ24004.1.
RefSeqYP_267925.1. NC_003910.7.

3D structure databases

ProteinModelPortalQ486U0.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING167879.CPS_1182.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAZ24004; AAZ24004; CPS_1182.
GeneID3518669.
KEGGcps:CPS_1182.
PATRIC21465613. VBIColPsy94388_1058.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0060.
HOGENOMHOG000246402.
KOK01870.
OMAVLGDWDN.
OrthoDBEOG644ZM1.
ProtClustDBPRK05743.

Enzyme and pathway databases

BioCycCPSY167879:GI48-1182-MONOMER.

Family and domain databases

Gene3D1.10.730.10. 1 hit.
3.40.50.620. 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. SSF47323. 1 hit.
SSF50677. SSF50677. 1 hit.
TIGRFAMsTIGR00392. ileS. 1 hit.
PROSITEPS00178. AA_TRNA_LIGASE_I. 1 hit.
[Graphical view]
ProtoNetSearch...

Entry information

Entry nameSYI_COLP3
AccessionPrimary (citable) accession number: Q486U0
Entry history
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: September 13, 2005
Last modified: April 16, 2014
This is version 67 of the entry and version 1 of the sequence. [Complete history]
Entry statusReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Relevant documents

SIMILARITY comments

Index of protein domains and families

Aminoacyl-tRNA synthetases

List of aminoacyl-tRNA synthetase entries