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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Campylobacter concisus (strain 13826)
Status
Reviewed-Annotation score: -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)DescriptionActionsGraphical viewLength
Binding sitei570Aminoacyl-adenylateUniRule annotation1
Binding sitei614ATPUniRule annotation1
Metal bindingi893ZincUniRule annotation1
Metal bindingi896ZincUniRule annotation1
Metal bindingi908ZincUniRule annotation1
Metal bindingi911ZincUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

Molecular functionAminoacyl-tRNA synthetase, Ligase
Biological processProtein biosynthesis
LigandATP-binding, Metal-binding, Nucleotide-binding, Zinc

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:Ccon26_16660
ORF Names:CCC13826_0278
OrganismiCampylobacter concisus (strain 13826)
Taxonomic identifieri360104 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaEpsilonproteobacteriaCampylobacteralesCampylobacteraceaeCampylobacter
Proteomesi
  • UP000001121 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_10000737071 – 918Isoleucine--tRNA ligaseAdd BLAST918

Proteomic databases

PRIDEiA8Z6P6

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi360104.CCC13826_0278

Structurei

3D structure databases

ProteinModelPortaliA8Z6P6
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi59 – 69"HIGH" regionAdd BLAST11
Motifi611 – 615"KMSKS" region5

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

eggNOGiENOG4105C07 Bacteria
COG0060 LUCA
KOiK01870
OMAiHLGTAWN
OrthoDBiPOG091H028I

Family and domain databases

CDDicd07960 Anticodon_Ia_Ile_BEm, 1 hit
Gene3Di3.40.50.620, 2 hits
3.90.740.10, 1 hit
HAMAPiMF_02002 Ile_tRNA_synth_type1, 1 hit
InterProiView protein in InterPro
IPR001412 aa-tRNA-synth_I_CS
IPR002300 aa-tRNA-synth_Ia
IPR033708 Anticodon_Ile_BEm
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_Ia_anticodon-bd
IPR009008 Val/Leu/Ile-tRNA-synth_edit
PfamiView protein in Pfam
PF08264 Anticodon_1, 1 hit
PF00133 tRNA-synt_1, 1 hit
PRINTSiPR00984 TRNASYNTHILE
SUPFAMiSSF47323 SSF47323, 1 hit
SSF50677 SSF50677, 1 hit
TIGRFAMsiTIGR00392 ileS, 1 hit
PROSITEiView protein in PROSITE
PS00178 AA_TRNA_LIGASE_I, 1 hit

Sequencei

Sequence statusi: Complete.

A8Z6P6-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MDYKETLLLP ETNFPMRGNL PQNEPQRLKS WYEERKVYEK MKKNRQNAVK
60 70 80 90 100
NFNIHDGPPY ANGHLHIGHA LNKILKDIIT KTHYFYGENV RYVPGWDCHG
110 120 130 140 150
LPIEQQVEVK LGDKKKELSK VEIRELCRQH AREFIDIQRD EFKTLGIIGD
160 170 180 190 200
FENPYMTMKF EFEADIYKAL CEIAKKGLLV ERSKPVYWSW AARSALAEAE
210 220 230 240 250
VEYEEKEDYS IYVAFELDGD ALEKLGVKEA SAVIWTTTPW TLPANQAISL
260 270 280 290 300
KPDEIYVLTA ENLIFAKPLL ESVVQSGLSK GEIKKEFKSS LLENTHAINP
310 320 330 340 350
LNGRKSKFLL GDHVMMDGGT GLVHTAPGHG EDDYYVCLKY GFSEILMPVD
360 370 380 390 400
DGGCYDESIK HHGLFRSDVV DEFVGMHIFK ANEKILELLG KSLLSVSKFR
410 420 430 440 450
HSYPFCWRTH KPVIYRATKQ WFIAMDESKL GGKTLRQTAL KELEKVKFYP
460 470 480 490 500
SVGIKRIGSM IENRPDWCIS RQRDWGVPIA FFRDKATKEV IFDSEILDHI
510 520 530 540 550
AGIFKEKGAD AWWALSIDEL LPKGSKYKAE NLEKVMDILD VWFDSGSTWH
560 570 580 590 600
AVLQSDNYDA GKYPASMYLE GSDQHRGWFQ SSLLVSTAIN SHAPYESILT
610 620 630 640 650
HGFTVDAKGE KMSKSKGNVI APQDVAKTHG VEILRLWVGM SDYSSDLKIS
660 670 680 690 700
EDILKQISEQ YRKIRNTIRF LLANVNDLES LNTEFNILDK WILARAKKVF
710 720 730 740 750
DEASACFKNY DFSKGFNILL NFLSADLSGV YLDVCKDRLY CDAKDAPRRR
760 770 780 790 800
SAQSAMAIIT KTLLPLIAPT LTYTVDEVMD YAPKIIKGEA KDAFDLVYEP
810 820 830 840 850
IKFDLSFEDE LLFASREKFN EIVDVLKKDK KIKSTLELSL ETTNHNITSY
860 870 880 890 900
DEREVADLYM VSSVRAYDDS EPLAEFELEG DKFKIIASNL HKCPRCWKFN
910
ASKEDALCPR CEEVISAK
Length:918
Mass (Da):105,052
Last modified:January 15, 2008 - v1
Checksum:i56BA720A42206B62
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CP000792 Genomic DNA Translation: ABW74825.1
RefSeqiWP_012140300.1, NC_009802.2

Genome annotation databases

EnsemblBacteriaiABW74825; ABW74825; CCC13826_0278
KEGGicco:CCC13826_0278

Similar proteinsi

Entry informationi

Entry nameiSYI_CAMC1
AccessioniPrimary (citable) accession number: A8Z6P6
Entry historyiIntegrated into UniProtKB/Swiss-Prot: February 26, 2008
Last sequence update: January 15, 2008
Last modified: May 23, 2018
This is version 77 of the entry and version 1 of the sequence. See complete history.
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome
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Main funding by: National Institutes of Health