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Protein

Isoleucine--tRNA ligase

Gene

ileS

Organism
Mycobacterium bovis (strain ATCC BAA-935 / AF2122/97)
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 annotation

Sites

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Binding sitei622ATPUniRule 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:BQ2027_MB1563
OrganismiMycobacterium bovis (strain ATCC BAA-935 / AF2122/97)
Taxonomic identifieri233413 [NCBI]
Taxonomic lineageiBacteriaActinobacteriaCorynebacterialesMycobacteriaceaeMycobacteriumMycobacterium tuberculosis complex
Proteomesi
  • UP000001419 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00000985471 – 1041Isoleucine--tRNA ligaseAdd BLAST1041

Interactioni

Subunit structurei

Monomer.UniRule annotation

Structurei

3D structure databases

ProteinModelPortaliQ7VEZ0.
SMRiQ7VEZ0.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Motif

Feature keyPosition(s)DescriptionActionsGraphical viewLength
Motifi53 – 63"HIGH" regionAdd BLAST11
Motifi619 – 623"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

HOGENOMiHOG000246403.
KOiK01870.
OMAiKMMAPFT.

Family and domain databases

CDDicd07961. Anticodon_Ia_Ile_ABEc. 1 hit.
Gene3Di3.40.50.620. 2 hits.
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.

Q7VEZ0-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MTDNAYPKLA GGAPDLPALE LEVLDYWSRD DTFRASIARR DGAPEYVFYD
60 70 80 90 100
GPPFANGLPH YGHLLTGYVK DIVPRYRTMR GYKVERRFGW DTHGLPAELE
110 120 130 140 150
VERQLGITDK SQIEAMGIAA FNDACRASVL RYTDEWQAYV TRQARWVDFD
160 170 180 190 200
NDYKTLDLAY MESVIWAFKQ LWDKGLAYEG YRVLPYCWRD ETPLSNHELR
210 220 230 240 250
MDDDVYQSRQ DPAVTVGFKV VGGQPDNGLD GAYLLVWTTT PWTLPSNLAV
260 270 280 290 300
AVSPDITYVQ VQAGDRRFVL AEARLAAYAR ELGEEPVVLG TYRGAELLGT
310 320 330 340 350
RYLPPFAYFM DWPNAFQVLA GDFVTTDDGT GIVHMAPAYG EDDMVVAEAV
360 370 380 390 400
GIAPVTPVDS KGRFDVTVAD YQGQHVFDAN AQIVRDLKTQ SGPAAVNGPV
410 420 430 440 450
LIRHETYEHP YPHCWRCRNP LIYRSVSSWF VRVTDFRDRM VELNQQITWY
460 470 480 490 500
PEHVKDGQFG KWLQGARDWS ISRNRYWGTP IPVWKSDDPA YPRIDVYGSL
510 520 530 540 550
DELERDFGVR PANLHRPYID ELTRPNPDDP TGRSTMRRIP DVLDVWFDSG
560 570 580 590 600
SMPYAQVHYP FENLDWFQGH YPGDFIVEYI GQTRGWFYTL HVLATALFDR
610 620 630 640 650
PAFKTCVAHG IVLGFDGQKM SKSLRNYPDV TEVFDRDGSD AMRWFLMASP
660 670 680 690 700
ILRGGNLIVT EQGIRDGVRQ VLLPLWNTYS FLALYAPKVG TWRVDSVHVL
710 720 730 740 750
DRYILAKLAV LRDDLSESME VYDIPGACEH LRQFTEALTN WYVRRSRSRF
760 770 780 790 800
WAEDADAIDT LHTVLEVTTR LAAPLLPLIT EIIWRGLTRE RSVHLTDWPA
810 820 830 840 850
PDLLPSDADL VAAMDQVRDV CSAASSLRKA KKLRVRLPLP KLIVAVENPQ
860 870 880 890 900
LLRPFVDLIG DELNVKQVEL TDAIDTYGRF ELTVNARVAG PRLGKDVQAA
910 920 930 940 950
IKAVKAGDGV INPDGTLLAG PAVLTADEYN SRLVAADPES TAALPDGAGL
960 970 980 990 1000
VVLDGTVTAE LEAEGWAKDR IRELQELRKS TGLDVSDRIR VVMSVPAERE
1010 1020 1030 1040
DWARTHRDLI AGEILATDFE FADLADGVAI GDGVRVSIEK T
Length:1,041
Mass (Da):117,314
Last modified:October 1, 2003 - v1
Checksum:i4513382E3248D3AB
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
LT708304 Genomic DNA. Translation: SIU00166.1.
RefSeqiNP_855215.1. NC_002945.3.
WP_010950555.1. NC_002945.4.

Genome annotation databases

EnsemblBacteriaiCDO42811; CDO42811; Mb1563.
KEGGimbo:Mb1563.
PATRICifig|233413.5.peg.1709.

Similar proteinsi

Entry informationi

Entry nameiSYI_MYCBO
AccessioniPrimary (citable) accession number: Q7VEZ0
Secondary accession number(s): A0A1R3XZ02, X2BI93
Entry historyiIntegrated into UniProtKB/Swiss-Prot: December 20, 2005
Last sequence update: October 1, 2003
Last modified: November 22, 2017
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. Aminoacyl-tRNA synthetases
    List of aminoacyl-tRNA synthetase entries
  2. SIMILARITY comments
    Index of protein domains and families