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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Neisseria gonorrhoeae (strain NCCP11945)
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 sitei563 – 5631Aminoacyl-adenylateUniRule annotation
Binding sitei608 – 6081ATPUniRule annotation
Metal bindingi892 – 8921ZincUniRule annotation
Metal bindingi895 – 8951ZincUniRule annotation
Metal bindingi912 – 9121ZincUniRule annotation
Metal bindingi915 – 9151ZincUniRule annotation

GO - Molecular functioni

  1. aminoacyl-tRNA editing activity Source: InterPro
  2. ATP binding Source: UniProtKB-HAMAP
  3. isoleucine-tRNA ligase activity Source: UniProtKB-HAMAP
  4. zinc ion binding Source: UniProtKB-HAMAP

GO - Biological processi

  1. isoleucyl-tRNA aminoacylation Source: UniProtKB-HAMAP
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

BioCyciNGON521006:GJ73-102-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:NGK_0100
OrganismiNeisseria gonorrhoeae (strain NCCP11945)
Taxonomic identifieri521006 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaBetaproteobacteriaNeisserialesNeisseriaceaeNeisseria
ProteomesiUP000002564 Componenti: Chromosome

Subcellular locationi

  1. Cytoplasm UniRule annotation

GO - Cellular componenti

  1. cytoplasm Source: UniProtKB-SubCell
Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Chaini1 – 929929Isoleucine--tRNA ligasePRO_1000189184Add
BLAST

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi521006.NGK_0100.

Structurei

3D structure databases

ProteinModelPortaliB4RPY6.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)LengthDescriptionGraphical viewFeature identifierActions
Motifi58 – 6811"HIGH" regionAdd
BLAST
Motifi605 – 6095"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.

B4RPY6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTDYSKTVNL LESPFPMRGN LAKCEPAWLK SWYEQKRYQK LREIAKGRPK
60 70 80 90 100
FILHDGPPYA NGDIHIGHAV NKILKDIIIR SKTQAGFDAP YVPGWDCHGL
110 120 130 140 150
PIEVMVEKLH GKDMPKARFR ELCREYAAEQ IARQKKDFIR LGVLGDWDNP
160 170 180 190 200
YLTMDFKTEA DTVRMLGEIY KSGYLYRGAK PVQFCLDCGS SLAEAEVEYK
210 220 230 240 250
DKVSPAIDVA YPFKDTVALA AAFGLAGIEG KAFAVIWTTT PWTLPASQAV
260 270 280 290 300
SAGADVVYQL IDTPKGKLVL AKDLAEGALK RYGFSDGIAI LAETTGDKLE
310 320 330 340 350
NLHMNHPFLE RDIPMLNGEH VTTDAGTGLV HTAPAHGLED YAVCNKYGIE
360 370 380 390 400
LYNPVNAEGK YISETPRVAG MSVWEANPVI LQWPEETGNL LASSKIEHSY
410 420 430 440 450
AHCWRHKTPL IYRATGQWFV GMDKAGSDGK TLRDKAIKAV DDTEFFPPWG
460 470 480 490 500
RARLESMIEG RPDWVVSRQR YWGTPMTFFV HKETGELHPN SAELLEKVAQ
510 520 530 540 550
RIEEKGIEAW FSLDKSELLS AEDCEHYDKL PDTMDVWFDS GSTHYSVVKQ
560 570 580 590 600
REELEWPADL YLEGSDQHRG WFQSSMLTGC ASSMGRAPYK QLLTHGFVVD
610 620 630 640 650
QNGRKMSKSI GNVVAPQEVY NEFGADILRL WAASTDYSGE LAISKEILKR
660 670 680 690 700
VTESYRRIRN TLSFLFANLS DFNPIEDAVP QAEMVEIDRY ALVLARRLQE
710 720 730 740 750
RLAGGYYPRY AFHFAVKDIV SFCSEDLGAF YLDILKDRLY TTKADSRARR
760 770 780 790 800
SAQTALYHIT RSLVLLIAPI LCFTGEEAWD IIGGGEEDSV LFHTWHEFPA
810 820 830 840 850
INEKAEAELV KKWTAIREAR EAVTAAIEPL RADKTVGSSL QAEAEITAPE
860 870 880 890 900
EMAGYLNALG EELRFALLVS KAEVKVGDEL AVAAKASDGE KCERCWHYTR
910 920
DVGAVAGYET VCKRCAENVG GEGETRHYA
Length:929
Mass (Da):104,155
Last modified:September 23, 2008 - v1
Checksum:iAB0495DF16BFFBB9
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001050 Genomic DNA. Translation: ACF28799.1.
RefSeqiYP_002000725.1. NC_011035.1.

Genome annotation databases

EnsemblBacteriaiACF28799; ACF28799; NGK_0100.
KEGGingk:NGK_0100.
PATRICi20338450. VBINeiGon87511_0110.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP001050 Genomic DNA. Translation: ACF28799.1.
RefSeqiYP_002000725.1. NC_011035.1.

3D structure databases

ProteinModelPortaliB4RPY6.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi521006.NGK_0100.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiACF28799; ACF28799; NGK_0100.
KEGGingk:NGK_0100.
PATRICi20338450. VBINeiGon87511_0110.

Phylogenomic databases

eggNOGiCOG0060.
HOGENOMiHOG000246402.
KOiK01870.
OMAiVLGDWDN.
OrthoDBiEOG644ZM1.

Enzyme and pathway databases

BioCyciNGON521006:GJ73-102-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. "Complete genome sequence of Neisseria gonorrhoeae NCCP11945."
    Chung G.T., Yoo J.S., Oh H.B., Lee Y.S., Cha S.H., Kim S.J., Yoo C.K.
    J. Bacteriol. 190:6035-6036(2008) [PubMed] [Europe PMC] [Abstract]
    Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
    Strain: NCCP11945.

Entry informationi

Entry nameiSYI_NEIG2
AccessioniPrimary (citable) accession number: B4RPY6
Entry historyi
Integrated into UniProtKB/Swiss-Prot: July 28, 2009
Last sequence update: September 23, 2008
Last modified: April 1, 2015
This is version 53 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.