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Q2P5B0 (SYI_XANOM) Reviewed, UniProtKB/Swiss-Prot

Last modified May 1, 2013. Version 59. 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:XOO1512
OrganismXanthomonas oryzae pv. oryzae (strain MAFF 311018) [Complete proteome] [HAMAP]
Taxonomic identifier342109 [NCBI]
Taxonomic lineageBacteria › Proteobacteria › Gammaproteobacteria › Xanthomonadales › Xanthomonadaceae › Xanthomonas ›

Protein attributes

Sequence length943 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 – 943943Isoleucine--tRNA ligase HAMAP-Rule MF_02002
PRO_1000022142

Regions

Motif59 – 6911"HIGH" region HAMAP-Rule MF_02002
Motif618 – 6225"KMSKS" region HAMAP-Rule MF_02002

Sites

Metal binding9061Zinc By similarity
Metal binding9091Zinc By similarity
Metal binding9261Zinc By similarity
Metal binding9291Zinc By similarity
Binding site5771Aminoacyl-adenylate By similarity
Binding site6211ATP By similarity

Sequences

Sequence LengthMass (Da)Tools
Q2P5B0 [UniParc].

Last modified February 7, 2006. Version 1.
Checksum: 4D4F90B85AE6A1D4

FASTA943104,419
        10         20         30         40         50         60 
MTQDYKATLH LPATEFPMRG DLPKREPAML ERWEREGFYA QLRANAAGRP LFVLHDGPPY 

        70         80         90        100        110        120 
ANGQIHLGHA VNKILKDIIV KSKCLAGFDA PYIPGWDCHG LPIEIAIEKK YGKVGVKLDA 

       130        140        150        160        170        180 
AEFRQKCREY ATEQIDLQRR DFKRLGVIGD WDNPYKTLDF RFEANEIRAL AKVVDNGHLT 

       190        200        210        220        230        240 
RGVKPVHWCF DCGSALAEAE IEYADKVSPT VDIAYPARDP GAVAAAFGAT LPGGVGVAVP 

       250        260        270        280        290        300 
IWTTTPWTLP ASLAVSLGAE LDYVLVEGPA DRGQPRWLVI AEALAAKALA RYGVDEVVVH 

       310        320        330        340        350        360 
GHAKGTALEQ MLLNHPFYAE REIPLLLGDH VSAEDGTGAV HTAPGHGQED YQVSKQYGLL 

       370        380        390        400        410        420 
ERYGAAQINP VDGRGVYLPS TPPLGDTVLA GLHIWKANDV IIEALHGTGV LLAASKMEHS 

       430        440        450        460        470        480 
YPHCWRHKTP IAFRATPQWF ISMEQANLRA DALKAIESVH WYPSWGQARI AGMVDGRPDW 

       490        500        510        520        530        540 
TISRQRTWGV PIALFVHRET GEPHPRSTEL LRQVADRVEL GGVDVWYTLD AAELLGDEAA 

       550        560        570        580        590        600 
DYDKITDILD VWFDSGVTHE AVLVDRGLPK PADLYLEGSD QHRGWFQSSL LSGVAMDKAA 

       610        620        630        640        650        660 
PYKQCLTHGF TVDEHGRKMS KSLGNGIEPQ DIMKTLGADI LRLWIASADY SNEMSLSQEI 

       670        680        690        700        710        720 
LKRNADAYRR LRNTARFLLG NLHGFDPLQH LVALEDMVLL DRWIVHRAHE LQEKIVAAYA 

       730        740        750        760        770        780 
RYDFAEIVQA LLNFCSVDLG SLYLDVTKDR LYTMAEDARG RRSAQSAMYH VAEAFVRWIA 

       790        800        810        820        830        840 
PVMSFTADEL WGYLPGKHVG NVLFATWYGG LAPLPADAAL TSADFDKLLA LREQVSKVLE 

       850        860        870        880        890        900 
PMRANGAIGA ALEAEITVAA DVQTAARWQP LAEELRFLFI SGDVTVTAAS TDDIFVSAQP 

       910        920        930        940 
TTKAKCVRCW HHQSSVGSDP RHPELCSRCV SNIEGPGEER RWF

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References

[1]"Genome sequence of Xanthomonas oryzae pv. oryzae suggests contribution of large numbers of effector genes and insertion sequences to its race diversity."
Ochiai H., Inoue Y., Takeya M., Sasaki A., Kaku H.
Jpn. Agric. Res. Q. 39:275-287(2005)
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
Strain: MAFF 311018.

Cross-references

Sequence databases

EMBL
GenBank
DDBJ		AP008229 Genomic DNA. Translation: BAE68267.1.
RefSeqYP_450541.1. NC_007705.1.

3D structure databases

HSSPHSSP built from PDB template 2AJG based on UniProtKB P07813.
ProteinModelPortalQ2P5B0.
ModBaseSearch...

Protein-protein interaction databases

STRING342109.XOO_1512.

Protocols and materials databases

StructuralBiologyKnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaBAE68267; BAE68267; BAE68267.
GeneID3857879.
KEGGxom:XOO_1512.
PATRIC24112556. VBIXanOry49434_1709.

Organism-specific databases

CMRSearch...

Phylogenomic databases

eggNOGCOG0060.
KOK01870.
OMAKQVLTHG.
ProtClustDBPRK05743.

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_XANOM
AccessionPrimary (citable) accession number: Q2P5B0
Entry history
Integrated into UniProtKB/Swiss-Prot: January 15, 2008
Last sequence update: February 7, 2006
Last modified: May 1, 2013
This is version 59 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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