SYI_ALIFM
ID SYI_ALIFM Reviewed; 952 AA.
AC B5FA60;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 14-OCT-2008, sequence version 1.
DT 03-AUG-2022, entry version 84.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_02002};
DE EC=6.1.1.5 {ECO:0000255|HAMAP-Rule:MF_02002};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_02002};
DE Short=IleRS {ECO:0000255|HAMAP-Rule:MF_02002};
GN Name=ileS {ECO:0000255|HAMAP-Rule:MF_02002}; OrderedLocusNames=VFMJ11_0466;
OS Aliivibrio fischeri (strain MJ11) (Vibrio fischeri).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC Aliivibrio.
OX NCBI_TaxID=388396;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=MJ11;
RA Mandel M.J., Stabb E.V., Ruby E.G., Ferriera S., Johnson J., Kravitz S.,
RA Beeson K., Sutton G., Rogers Y.-H., Friedman R., Frazier M., Venter J.C.;
RT "Complete sequence of Vibrio fischeri strain MJ11.";
RL Submitted (AUG-2008) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the attachment of isoleucine to tRNA(Ile). As IleRS
CC can inadvertently accommodate and process structurally similar amino
CC acids such as valine, to avoid such errors it has two additional
CC distinct tRNA(Ile)-dependent editing activities. One activity is
CC designated as 'pretransfer' editing and involves the hydrolysis of
CC activated Val-AMP. The other activity is designated 'posttransfer'
CC editing and involves deacylation of mischarged Val-tRNA(Ile).
CC {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=ATP + L-isoleucine + tRNA(Ile) = AMP + diphosphate + L-
CC isoleucyl-tRNA(Ile); Xref=Rhea:RHEA:11060, Rhea:RHEA-COMP:9666,
CC Rhea:RHEA-COMP:9695, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019,
CC ChEBI:CHEBI:58045, ChEBI:CHEBI:78442, ChEBI:CHEBI:78528,
CC ChEBI:CHEBI:456215; EC=6.1.1.5; Evidence={ECO:0000255|HAMAP-
CC Rule:MF_02002};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_02002};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000255|HAMAP-Rule:MF_02002};
CC -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- DOMAIN: IleRS has two distinct active sites: one for aminoacylation and
CC one for editing. The misactivated valine is translocated from the
CC active site to the editing site, which sterically excludes the
CC correctly activated isoleucine. The single editing site contains two
CC valyl binding pockets, one specific for each substrate (Val-AMP or Val-
CC tRNA(Ile)). {ECO:0000255|HAMAP-Rule:MF_02002}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 1 subfamily. {ECO:0000255|HAMAP-Rule:MF_02002}.
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DR EMBL; CP001139; ACH66418.1; -; Genomic_DNA.
DR RefSeq; WP_012533712.1; NC_011184.1.
DR AlphaFoldDB; B5FA60; -.
DR SMR; B5FA60; -.
DR EnsemblBacteria; ACH66418; ACH66418; VFMJ11_0466.
DR GeneID; 64241902; -.
DR KEGG; vfm:VFMJ11_0466; -.
DR HOGENOM; CLU_001493_7_1_6; -.
DR OMA; HLGTAWN; -.
DR Proteomes; UP000001857; Chromosome I.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0002161; F:aminoacyl-tRNA editing activity; IEA:InterPro.
DR GO; GO:0005524; F:ATP binding; IEA:UniProtKB-UniRule.
DR GO; GO:0004822; F:isoleucine-tRNA ligase activity; IEA:UniProtKB-UniRule.
DR GO; GO:0000049; F:tRNA binding; IEA:InterPro.
DR GO; GO:0008270; F:zinc ion binding; IEA:UniProtKB-UniRule.
DR GO; GO:0006428; P:isoleucyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR CDD; cd07960; Anticodon_Ia_Ile_BEm; 1.
DR Gene3D; 3.40.50.620; -; 2.
DR Gene3D; 3.90.740.10; -; 1.
DR HAMAP; MF_02002; Ile_tRNA_synth_type1; 1.
DR InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR InterPro; IPR002300; aa-tRNA-synth_Ia.
DR InterPro; IPR033708; Anticodon_Ile_BEm.
DR InterPro; IPR002301; Ile-tRNA-ligase.
DR InterPro; IPR023585; Ile-tRNA-ligase_type1.
DR InterPro; IPR013155; M/V/L/I-tRNA-synth_anticd-bd.
DR InterPro; IPR014729; Rossmann-like_a/b/a_fold.
DR InterPro; IPR009080; tRNAsynth_Ia_anticodon-bd.
DR InterPro; IPR009008; Val/Leu/Ile-tRNA-synth_edit.
DR InterPro; IPR010663; Znf_FPG/IleRS.
DR Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF00133; tRNA-synt_1; 1.
DR Pfam; PF06827; zf-FPG_IleRS; 1.
DR PRINTS; PR00984; TRNASYNTHILE.
DR SUPFAM; SSF47323; SSF47323; 1.
DR SUPFAM; SSF50677; SSF50677; 1.
DR TIGRFAMs; TIGR00392; ileS; 1.
DR PROSITE; PS00178; AA_TRNA_LIGASE_I; 1.
PE 3: Inferred from homology;
KW Aminoacyl-tRNA synthetase; ATP-binding; Cytoplasm; Ligase; Metal-binding;
KW Nucleotide-binding; Protein biosynthesis; Zinc.
FT CHAIN 1..952
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000189214"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT MOTIF 617..621
FT /note="'KMSKS' region"
FT BINDING 576
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 620
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 915
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 918
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 935
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 938
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 952 AA; 106918 MW; 545533062A0E1019 CRC64;
MSDYKDTLNL PETGFPMRGN LANREPEMLK RWYDEDLYGE IRKAKKGKKS FVLHDGPPYA
NGDIHIGHAL NKILKDIIIK SKTLSGFDAP YVPGWDCHGL PIELMVEKKK GKPGQKISAA
EFREECRKYA AGQVEGQKES FKRLGVMGEW DKPYRTMDFG TEANIIRSLG KIADQGHLLK
GFKPVHWCTD CGSALAEAEV EYQDKVSPSI DVRFVAADEA ATLAKFSTPE GHQGEGELSV
VIWTTTPWTL PANRAVALHA DLEYVLVQVE AHGEQKAQRL ILASELAKSV LDRANIEHYH
NLGFAKGSDL ELLQFNHPFY NFTVPAILGE HVTTDSGTGI VHTAPGHGQE DFVVGKKYDL
EIANPVGSNG VYLPDTELFA GQHVFKANDS VLEVLKEKGA LLHHHAYEHS YPHCWRHKTP
IIFRATPQWF ISMDQAGLRA KALEEVKSVE WMPEWGQNRI EGMIEGRPEW CISRQRTWGV
PIALFVHKET AELHPDSLEL IEKVAKLVEE KGIQAWWDVD AAELMGEEDA ANYEKVLDTL
DVWFDSGVTH FSVVDSREEY NFPEEERTHS ADLYLEGSDQ HRGWFQSSLI SSVAMKGKAP
YRQVLTHGFV VDGNGRKMSK SIGNVVAPKD VTNKLGADIL RLWVASTDYT NEVAVSDEIL
KRSADAYRRI RNTARFFLAN LSGFNPATDI VPAEEMVALD RWAVGRAFAA QQEIIKSYDE
YNLHEVTQRL MHFCSIEMGS FYLDVIKDRQ YTAKKGGHAQ RSCQTALYYI VEALVRWMAP
IMSFTADEIW NEMPGEREKF VFTGEWYQGL FDLAEGEEFN NEFWTDIQAV RASVNKLLEA
ARGEKVIGGA LQAEVTLYAD DALIAKINKL EDELRFVLLT SAATVKPLSE KTESAKATEL
DGLFVDVVAS EAAKCERCWH HVADVGTIEG HEEVCGRCVS NIDGEGEERK FA
