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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Pseudomonas savastanoi pv. phaseolicola (strain 1448A / Race 6) (Pseudomonas syringae pv. phaseolicola (strain 1448A / Race 6))
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 sitei567 – 5671Aminoacyl-adenylateUniRule annotation
Binding sitei611 – 6111ATPUniRule annotation
Metal bindingi906 – 9061ZincUniRule annotation
Metal bindingi909 – 9091ZincUniRule annotation
Metal bindingi926 – 9261ZincUniRule annotation
Metal bindingi929 – 9291ZincUniRule annotation

GO - Molecular functioni

GO - Biological processi

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

BioCyciPSAV264730:GKDE-722-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:PSPPH_0721
OrganismiPseudomonas savastanoi pv. phaseolicola (strain 1448A / Race 6) (Pseudomonas syringae pv. phaseolicola (strain 1448A / Race 6))
Taxonomic identifieri264730 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaPseudomonadalesPseudomonadaceaePseudomonas
ProteomesiUP000000551 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 943943Isoleucine--tRNA ligasePRO_0000098448Add
BLAST

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi264730.PSPPH_0721.

Structurei

3D structure databases

ProteinModelPortaliQ48NK6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi58 – 6811"HIGH" regionAdd
BLAST
Motifi608 – 6125"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.

Q48NK6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTDYKATLNL PDTAFPMKAG LPQREPQTLQ RWDSIGLYQK LREIGKDRPK
60 70 80 90 100
FVLHDGPPYA NGNIHIGHAV NKILKDMILR SKTLAGFDAP YVPGWDCHGL
110 120 130 140 150
PIEHKVEVTH GKNLSADRTR ELCRAYASEQ IEGQKSEFIR LGVLGDWSNP
160 170 180 190 200
YLTMNFANEA GEIRALAEMV KGGFVFKGLK PVNWCFDCGS ALAEAEVEYQ
210 220 230 240 250
DKKSSTIDVA FLIADEAKLA AAFGLPALGK PASIVIWTTT PWTIPANQAL
260 270 280 290 300
NVHPEFEYAL VDVGDKLLVL AAELVESCLA RYKLEGTVIA TTTGQALELI
310 320 330 340 350
NFRHPFYDRL SPVYLADYVE LGAGTGIVHS SPAYGVDDFN ICKQYGLSND
360 370 380 390 400
DIISPVQSNG VYVESLEFFG GQFIFKANQN IIDKLVEVGS LMDTETISHS
410 420 430 440 450
YMHCWRHKSP LIYRATAQWF VGMDKQPESG ETLRKRAVKA IEDTEFVPAW
460 470 480 490 500
GQARLHSMIA NRPDWCISRQ RNWGVPIPFF LHKESGDLHP RTVELMEEVA
510 520 530 540 550
QRVEKEGIEA WFKLDASELL GDEAAKYDKI SDTLDVWFDS GTTHWHVLRG
560 570 580 590 600
SHPMGHESGP RADLYLEGSD QHRGWFHSSL LTGCMLDDHA PYRELLTHGF
610 620 630 640 650
VVDENGRKMS KSLNNVVAPQ KVNDSLGADI MRLWVSATDY SGEMAVSDQI
660 670 680 690 700
LQRSADAYRR IRNTARFLLS NLSGFNPATD ILPAEEMLAL DRWAVDRTLL
710 720 730 740 750
LQRELQEHYG EYRFWNVYSK IHNFCVQELG GFYLDIIKDR QYTTAADSTA
760 770 780 790 800
RRSCQTALFH ISEALVRWIT PILAFTADEL WQFLPGERNE SVMLNTWYEG
810 820 830 840 850
LTEMPADFEM DRAYWERIMA VKTSVNKEME NLRAAKAIGG NLQAEVTLYA
860 870 880 890 900
EDSLIADLSK LSNELRFVLI TSTASVAPLV SAPADAVVTE VAGLKLKVLK
910 920 930 940
SSHAKCARCW HHREDVGVNP EHPEICGRCV DNISGAGEVR HYA
Length:943
Mass (Da):105,857
Last modified:September 13, 2005 - v1
Checksum:i4D94770A8B07B8D9
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000058 Genomic DNA. Translation: AAZ37532.1.
RefSeqiWP_011167651.1. NC_005773.3.

Genome annotation databases

EnsemblBacteriaiAAZ37532; AAZ37532; PSPPH_0721.
KEGGipsp:PSPPH_0721.
PATRICi19970509. VBIPseSyr78478_0772.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000058 Genomic DNA. Translation: AAZ37532.1.
RefSeqiWP_011167651.1. NC_005773.3.

3D structure databases

ProteinModelPortaliQ48NK6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi264730.PSPPH_0721.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAZ37532; AAZ37532; PSPPH_0721.
KEGGipsp:PSPPH_0721.
PATRICi19970509. VBIPseSyr78478_0772.

Phylogenomic databases

eggNOGiCOG0060.
HOGENOMiHOG000246402.
KOiK01870.
OMAiVLGDWDN.
OrthoDBiEOG644ZM1.

Enzyme and pathway databases

BioCyciPSAV264730:GKDE-722-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. Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: 1448A / Race 6.

Entry informationi

Entry nameiSYI_PSE14
AccessioniPrimary (citable) accession number: Q48NK6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: September 13, 2005
Last modified: July 22, 2015
This is version 77 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

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.