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Q740U6 (SYI_MYCPA) Reviewed, UniProtKB/Swiss-Prot

Last modified April 16, 2014. Version 68. 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:MAP_1246
OrganismMycobacterium paratuberculosis (strain ATCC BAA-968 / K-10) [Complete proteome] [HAMAP]
Taxonomic identifier262316 [NCBI]
Taxonomic lineageBacteriaActinobacteriaActinobacteridaeActinomycetalesCorynebacterineaeMycobacteriaceaeMycobacteriumMycobacterium avium complex (MAC)

Protein attributes

Sequence length1053 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_02003

Catalytic activity

ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-isoleucyl-tRNA(Ile). HAMAP-Rule MF_02003

Cofactor

Zinc By similarity. HAMAP-Rule MF_02003

Subunit structure

Monomer By similarity. HAMAP-Rule MF_02003

Subcellular location

Cytoplasm By similarity HAMAP-Rule MF_02003.

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_02003

Sequence similarities

Belongs to the class-I aminoacyl-tRNA synthetase family. IleS type 2 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 – 10531053Isoleucine--tRNA ligase HAMAP-Rule MF_02003
PRO_0000098549

Regions

Motif69 – 7911"HIGH" region HAMAP-Rule MF_02003
Motif631 – 6355"KMSKS" region HAMAP-Rule MF_02003

Sites

Binding site6341ATP By similarity

Sequences

Sequence LengthMass (Da)Tools
Q740U6 [UniParc].

Last modified July 5, 2004. Version 1.
Checksum: 0F210268429438E0

FASTA1,053118,305
        10         20         30         40         50         60 
MTDNLGFQAD REAQPADSVQ TYPKPAGGAP DFPALELEVL DYWARDDTFR ASIARRDGAE 

        70         80         90        100        110        120 
EYVFYDGPPF ANGLPHYGHL LTGYVKDIVP RYRTMRGNKV ERRFGWDTHG LPAELEVERQ 

       130        140        150        160        170        180 
LGITDKSQID DMGIAAFNDA CRESVLRYTD EWRAYVTRQA RWVDFDHDYK TLDLPYMESV 

       190        200        210        220        230        240 
IWAFKQLWDK GLAYEGYRVL PYCWRDETPL SNHELRMDDD VYPSRQDPAL TVGFKVVGGE 

       250        260        270        280        290        300 
LDGAHLLIWT TTPWTLPSNL AVAVHPEVTY VQVRSGDRRF VLAQPRLAAY ARELGPEPEI 

       310        320        330        340        350        360 
LGSYRGAELL GTRYLPPFPY FMDNPNAFRV LAGEFVTTED GTGIVHLAPA YGEDDMAVAD 

       370        380        390        400        410        420 
AAGIAPVTPV DSNGRFDAAV PDYQGLNVFD ANPQIIWDLK NGSGAAAANA PVLLRHETYE 

       430        440        450        460        470        480 
HPYPHCWRCR NPLIYRAVSS WFVAVTRFRD RMVELNQQIT WYPEHVKDGQ FGKWLAGARD 

       490        500        510        520        530        540 
WSISRNRYWG TPIPVWKSDD PAYPRIDVYG SLDELERDFG VRPDNLHRPY IDELTRPNPD 

       550        560        570        580        590        600 
DPSGRSTMRR IPDVLDVWFD SGSMPYAQVH YPFENRDWFE THYPGDFIVE YIGQTRGWFY 

       610        620        630        640        650        660 
TLHVLATALF DRPAFKTCVA HGIVLGSDGQ KMSKSLRNYP DVSEVFDRDG SDAMRWFLMA 

       670        680        690        700        710        720 
SPILRGGNLI VTEQGIRDGV RQVLLPFWNA YSFLALYAPK IGTWRTDSPQ VLDRYILAKL 

       730        740        750        760        770        780 
AELRDDLTRE MDACDISRAC EQLRQFTEAL TNWYVRRSRS RFWSEDADAI DTLHTVLEVT 

       790        800        810        820        830        840 
ARLAAPLLPS VTELVWRGLT GGRSVHLTDW PRSGELPADP GLVAAMDQVR EVCSAASSLR 

       850        860        870        880        890        900 
KAKKLRVRLP LPKLTVAVEN PQHLAPFVDL IADELNVKSV ELTDAIDTYG TFELTVNARV 

       910        920        930        940        950        960 
AGPRLGKDVQ AAIKAVKAGE GVVNADGTLT AGPAVLRPEE YSSRLVAADP EFTAALPNGA 

       970        980        990       1000       1010       1020 
GLVVLDGTVT PELEAEGWAK DRIRELQELR KSTGLDVSDR ISVVMSVPAG RAEWARTHRD 

      1030       1040       1050 
LIAGEILATR FEFGEPADPV AIGDGVRVSI SKV 

« Hide

References

[1]"The complete genome sequence of Mycobacterium avium subspecies paratuberculosis."
Li L., Bannantine J.P., Zhang Q., Amonsin A., May B.J., Alt D., Banerji N., Kanjilal S., Kapur V.
Proc. Natl. Acad. Sci. U.S.A. 102:12344-12349(2005) [PubMed] [Europe PMC] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: ATCC BAA-968 / K-10.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ
AE016958 Genomic DNA. Translation: AAS03563.1.
RefSeqNP_960180.1. NC_002944.2.

3D structure databases

ProteinModelPortalQ740U6.
ModBaseSearch...
MobiDBSearch...

Protein-protein interaction databases

STRING262316.MAP1246.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaAAS03563; AAS03563; MAP_1246.
GeneID2719583.
KEGGmpa:MAP1246.
PATRIC17994959. VBIMycAvi108102_1310.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0060.
KOK01870.
OMADWNLSRS.
OrthoDBEOG644ZM1.
ProtClustDBPRK06039.

Enzyme and pathway databases

BioCycMAVI262316:GCQR-1266-MONOMER.

Family and domain databases

Gene3D1.10.730.10. 1 hit.
3.40.50.620. 2 hits.
3.90.740.10. 1 hit.
HAMAPMF_02003. Ile_tRNA_synth_type2.
InterProIPR001412. aa-tRNA-synth_I_CS.
IPR002300. aa-tRNA-synth_Ia.
IPR002301. Ile-tRNA-ligase.
IPR023586. Ile-tRNA-ligase_type2.
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.
[Graphical view]
PfamPF08264. Anticodon_1. 1 hit.
PF00133. tRNA-synt_1. 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_MYCPA
AccessionPrimary (citable) accession number: Q740U6
Entry history
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: July 5, 2004
Last modified: April 16, 2014
This is version 68 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