ID   SYI_ALIF1               Reviewed;         952 AA.
AC   Q5E7N4;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   15-MAR-2005, sequence version 1.
DT   27-MAR-2024, entry version 113.
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};
GN   OrderedLocusNames=VF_0467;
OS   Aliivibrio fischeri (strain ATCC 700601 / ES114) (Vibrio fischeri).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Vibrionales; Vibrionaceae;
OC   Aliivibrio.
OX   NCBI_TaxID=312309;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700601 / ES114;
RX   PubMed=15703294; DOI=10.1073/pnas.0409900102;
RA   Ruby E.G., Urbanowski M., Campbell J., Dunn A., Faini M., Gunsalus R.,
RA   Lostroh P., Lupp C., McCann J., Millikan D., Schaefer A., Stabb E.,
RA   Stevens A., Visick K., Whistler C., Greenberg E.P.;
RT   "Complete genome sequence of Vibrio fischeri: a symbiotic bacterium with
RT   pathogenic congeners.";
RL   Proc. Natl. Acad. Sci. U.S.A. 102:3004-3009(2005).
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; Evidence={ECO:0000255|HAMAP-
CC         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; CP000020; AAW84962.1; -; Genomic_DNA.
DR   RefSeq; WP_005417642.1; NC_006840.2.
DR   RefSeq; YP_203850.1; NC_006840.2.
DR   AlphaFoldDB; Q5E7N4; -.
DR   SMR; Q5E7N4; -.
DR   STRING; 312309.VF_0467; -.
DR   EnsemblBacteria; AAW84962; AAW84962; VF_0467.
DR   KEGG; vfi:VF_0467; -.
DR   PATRIC; fig|312309.11.peg.457; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_6; -.
DR   OrthoDB; 9810365at2; -.
DR   Proteomes; UP000000537; 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   CDD; cd00818; IleRS_core; 1.
DR   Gene3D; 1.10.730.20; -; 1.
DR   Gene3D; 3.40.50.620; HUPs; 2.
DR   Gene3D; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 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   NCBIfam; TIGR00392; ileS; 1.
DR   PANTHER; PTHR42765:SF1; ISOLEUCINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR42765; SOLEUCYL-TRNA SYNTHETASE; 1.
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; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 1.
DR   SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR   SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 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; Reference proteome; Zinc.
FT   CHAIN           1..952
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_0000098498"
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;  106890 MW;  55E52BA5381C9A92 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 NEFWTEIQAV RASVNKLLEA
     ARGEKVIGGA LQAEVTLYAD DALIAKINKL EDELRFVLLT SAATVKPLSE KTESAKATEL
     DGLFVDVAAS EAAKCERCWH HVADVGTIEG HEEVCGRCVS NVDGEGEERK FA
//