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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Chlamydia abortus (strain DSM 27085 / S26/3) (Chlamydophila abortus)
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 annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei595ATPUniRule annotation1

GO - Molecular functioni

GO - Biological processi

Keywordsi

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

Enzyme and pathway databases

BioCyciCABO218497:G1GI1-670-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:CAB634
OrganismiChlamydia abortus (strain DSM 27085 / S26/3) (Chlamydophila abortus)
Taxonomic identifieri218497 [NCBI]
Taxonomic lineageiBacteriaChlamydiaeChlamydialesChlamydiaceaeChlamydia/Chlamydophila groupChlamydia
Proteomesi
  • UP000001012 Componenti: Chromosome

Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000985301 – 1043Isoleucine--tRNA ligaseAdd BLAST1043

Interactioni

Subunit structurei

Monomer.UniRule annotation

Protein-protein interaction databases

STRINGi218497.CAB634

Structurei

3D structure databases

ProteinModelPortaliQ5L5L0
SMRiQ5L5L0
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi49 – 59"HIGH" regionAdd BLAST11
Motifi592 – 596"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 2 subfamily.UniRule annotation

Phylogenomic databases

eggNOGiENOG4105C07 Bacteria
COG0060 LUCA
HOGENOMiHOG000246403
KOiK01870
OMAiHLGTAWN
OrthoDBiPOG091H028I

Family and domain databases

CDDicd07961 Anticodon_Ia_Ile_ABEc, 1 hit
Gene3Di3.40.50.620, 1 hit
3.90.740.10, 1 hit
HAMAPiMF_02003 Ile_tRNA_synth_type2, 1 hit
InterProiView protein in InterPro
IPR001412 aa-tRNA-synth_I_CS
IPR002300 aa-tRNA-synth_Ia
IPR033709 Anticodon_Ile_ABEc
IPR002301 Ile-tRNA-ligase
IPR023586 Ile-tRNA-ligase_type2
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.

Q5L5L0-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MHTEGEGSKE SLASREERIL NFWKTQEIFQ KSLKNREGRT LYSFYDGPPF
60 70 80 90 100
ATGLPHYGHL LAGTIKDVVG RFATMDGYYV PRRFGWDCHG VPVEYEVEKS
110 120 130 140 150
LNLTTPGAIE DFGVAKFNEE CRKIVFRYVD EWEHYIYRVG RWVDFSATWK
160 170 180 190 200
TMDASFMESV WWVFRSLYDQ GLVYEGVKVV PFSTKLGTPL SNFEAGQNYK
210 220 230 240 250
EVDDPSVVIK FALHGDPGSL LVWTTTPWTL VSNMAVAVGP EITYVRVADK
260 270 280 290 300
VSGEQWILGQ GCLSRWFSDP DTYEVIESFP GTALIGKSYE PPFNFFEQKR
310 320 330 340 350
AEGAYTILPG SFVEESEGTG VVHMAPAFGE ADFFVCKEHH VPMVCPVDNH
360 370 380 390 400
GCFTEEIPEY QGQYIKSCDK GIIKSLKNQG KVFYHGTVVH RYPFCWRTDT
410 420 430 440 450
PLIYKTVNSW FISVEKIKDK MLQANKKIHW VPEHIKEGRF GKWLEGARDW
460 470 480 490 500
AISRNRYWGT PIPVWKSKDG DILVIGSVEE LEKLTGEKVS DLHCHFVDQL
510 520 530 540 550
KIEKDGKSFH RVPYVFDCWF DSGAMPYAQN HYPFENQKET ESGFPADFIA
560 570 580 590 600
EGLDQTRGWF YTLTVISAAL FDQPVFKNAI VNGIVLAEDG NKMSKRLNNY
610 620 630 640 650
PSPMSIMNTY GADALRLYLL DSVVVKAEDL RFSDKGVESV LKQVLLPLTN
660 670 680 690 700
VLSFFKTYTD LYGFDANNYD KEEISYSEID RWILSNLYTV VGKVRESMSS
710 720 730 740 750
YNLNTAVNPF VTFIDDLTNW YIRRCRRRFW ESADTPDRRA AFATLYEVLT
760 770 780 790 800
VFCRVIAPFI PFISEDIYQQ IKTENSLESV HLCDFPYIDL AKVFPDLEQR
810 820 830 840 850
MGDAREIVGL GHSLRKEHKL KVRQPLANFY VVGPKDRLDQ LDSFKQLISE
860 870 880 890 900
ELNVKNIVFY KEAPSFVKTT VKPNFRSLGR RVGEKIKDIQ KALASLSQAQ
910 920 930 940 950
IQQLLTQEYL SLNLGSEEIV LHMEDVLISW ETDPGYVARS SSLFTVVLDC
960 970 980 990 1000
QLTEELVVEA ISRELVNKIN TMRRNQKLHV SDRIVLRMQT SEEVRKAFLH
1010 1020 1030 1040
YADYICEETL TTQSEFADVL EGEEWDINGH PTVIAIEVAA RPH
Length:1,043
Mass (Da):119,728
Last modified:June 21, 2005 - v1
Checksum:i331B040D1C6F5114
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR848038 Genomic DNA Translation: CAH64081.1
RefSeqiWP_011097220.1, NC_004552.2

Genome annotation databases

EnsemblBacteriaiCAH64081; CAH64081; CAB634
KEGGicab:CAB634

Similar proteinsi

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
CR848038 Genomic DNA Translation: CAH64081.1
RefSeqiWP_011097220.1, NC_004552.2

3D structure databases

ProteinModelPortaliQ5L5L0
SMRiQ5L5L0
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi218497.CAB634

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAH64081; CAH64081; CAB634
KEGGicab:CAB634

Phylogenomic databases

eggNOGiENOG4105C07 Bacteria
COG0060 LUCA
HOGENOMiHOG000246403
KOiK01870
OMAiHLGTAWN
OrthoDBiPOG091H028I

Enzyme and pathway databases

BioCyciCABO218497:G1GI1-670-MONOMER

Family and domain databases

CDDicd07961 Anticodon_Ia_Ile_ABEc, 1 hit
Gene3Di3.40.50.620, 1 hit
3.90.740.10, 1 hit
HAMAPiMF_02003 Ile_tRNA_synth_type2, 1 hit
InterProiView protein in InterPro
IPR001412 aa-tRNA-synth_I_CS
IPR002300 aa-tRNA-synth_Ia
IPR033709 Anticodon_Ile_ABEc
IPR002301 Ile-tRNA-ligase
IPR023586 Ile-tRNA-ligase_type2
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
ProtoNetiSearch...

Entry informationi

Entry nameiSYI_CHLAB
AccessioniPrimary (citable) accession number: Q5L5L0
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: June 21, 2005
Last modified: November 7, 2018
This is version 88 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

Documents

  1. SIMILARITY comments
    Index of protein domains and families
  2. Aminoacyl-tRNA synthetases
    List of aminoacyl-tRNA synthetase entries
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Main funding by: National Institutes of Health

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