ID   SYI_STRAW               Reviewed;        1047 AA.
AC   Q82AC9;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2003, sequence version 1.
DT   03-AUG-2022, entry version 118.
DE   RecName: Full=Isoleucine--tRNA ligase {ECO:0000255|HAMAP-Rule:MF_02003};
DE            EC=6.1.1.5 {ECO:0000255|HAMAP-Rule:MF_02003};
DE   AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000255|HAMAP-Rule:MF_02003};
DE            Short=IleRS {ECO:0000255|HAMAP-Rule:MF_02003};
GN   Name=ileS {ECO:0000255|HAMAP-Rule:MF_02003}; OrderedLocusNames=SAV_6130;
OS   Streptomyces avermitilis (strain ATCC 31267 / DSM 46492 / JCM 5070 / NBRC
OS   14893 / NCIMB 12804 / NRRL 8165 / MA-4680).
OC   Bacteria; Actinobacteria; Streptomycetales; Streptomycetaceae;
OC   Streptomyces.
OX   NCBI_TaxID=227882;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC   8165 / MA-4680;
RX   PubMed=11572948; DOI=10.1073/pnas.211433198;
RA   Omura S., Ikeda H., Ishikawa J., Hanamoto A., Takahashi C., Shinose M.,
RA   Takahashi Y., Horikawa H., Nakazawa H., Osonoe T., Kikuchi H., Shiba T.,
RA   Sakaki Y., Hattori M.;
RT   "Genome sequence of an industrial microorganism Streptomyces avermitilis:
RT   deducing the ability of producing secondary metabolites.";
RL   Proc. Natl. Acad. Sci. U.S.A. 98:12215-12220(2001).
RN   [2]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 31267 / DSM 46492 / JCM 5070 / NBRC 14893 / NCIMB 12804 / NRRL
RC   8165 / MA-4680;
RX   PubMed=12692562; DOI=10.1038/nbt820;
RA   Ikeda H., Ishikawa J., Hanamoto A., Shinose M., Kikuchi H., Shiba T.,
RA   Sakaki Y., Hattori M., Omura S.;
RT   "Complete genome sequence and comparative analysis of the industrial
RT   microorganism Streptomyces avermitilis.";
RL   Nat. Biotechnol. 21:526-531(2003).
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_02003}.
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_02003};
CC   -!- COFACTOR:
CC       Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_02003};
CC   -!- SUBUNIT: Monomer. {ECO:0000255|HAMAP-Rule:MF_02003}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_02003}.
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_02003}.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       IleS type 2 subfamily. {ECO:0000255|HAMAP-Rule:MF_02003}.
CC   ---------------------------------------------------------------------------
CC   Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC   Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC   ---------------------------------------------------------------------------
DR   EMBL; BA000030; BAC73841.1; -; Genomic_DNA.
DR   RefSeq; WP_010987531.1; NZ_JZJK01000089.1.
DR   AlphaFoldDB; Q82AC9; -.
DR   SMR; Q82AC9; -.
DR   STRING; 227882.SAV_6130; -.
DR   EnsemblBacteria; BAC73841; BAC73841; SAVERM_6130.
DR   KEGG; sma:SAVERM_6130; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_1_1_11; -.
DR   OMA; PSWYIRT; -.
DR   OrthoDB; 32262at2; -.
DR   Proteomes; UP000000428; Chromosome.
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; cd07961; Anticodon_Ia_Ile_ABEc; 1.
DR   Gene3D; 3.40.50.620; -; 2.
DR   Gene3D; 3.90.740.10; -; 1.
DR   HAMAP; MF_02003; Ile_tRNA_synth_type2; 1.
DR   InterPro; IPR002300; aa-tRNA-synth_Ia.
DR   InterPro; IPR033709; Anticodon_Ile_ABEc.
DR   InterPro; IPR002301; Ile-tRNA-ligase.
DR   InterPro; IPR023586; Ile-tRNA-ligase_type2.
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   PANTHER; PTHR42780; PTHR42780; 1.
DR   Pfam; PF08264; Anticodon_1; 1.
DR   Pfam; PF00133; tRNA-synt_1; 1.
DR   PRINTS; PR00984; TRNASYNTHILE.
DR   SUPFAM; SSF47323; SSF47323; 1.
DR   SUPFAM; SSF50677; SSF50677; 1.
DR   TIGRFAMs; TIGR00392; ileS; 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..1047
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_0000098563"
FT   MOTIF           52..62
FT                   /note="'HIGH' region"
FT   MOTIF           600..604
FT                   /note="'KMSKS' region"
FT   BINDING         603
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02003"
SQ   SEQUENCE   1047 AA;  117130 MW;  B08ACA994C0BA6BA CRC64;
     MKPPQYRQVP AQVDLPALEH AVLDFWREQK IFAKSLEQSE GRPEWVFYEG PPTANGMPGA
     HHIEARVFKD VFPRFRTMRG YHVARKAGWD CHGLPVELAV EKELGFSGKQ DIEAYGIAEF
     NAKCRESVTR HTDAFEELTS RMGYWTDLND PYRTMDPEYI ESVWWSLKEI FNKGLLVQDY
     RVAPWCPQDE TGLSDHELAQ GYETIVDPSV YVRFPLTSGP LAGRAALLVW TTTPWTLVSN
     TAVAAHPDVT YVVATNGEEK LVVAEPLVEK ALGEGWETTG ETFTGAEMER WTYQRPFELV
     EFPAPAHYVV NAEYVTTEDG TGLVHQSPAF GEDDLKVCRE YGLPVVNPVR TNGTFEEDVP
     LVGGVFFKKA DEKLTEDLQN RGLLFKHIPY EHSYPHCWRC HTALLYYAQP SWYIRTTAVK
     DRLLQENEKT NWFPESVKHG RFGDWLNNNV DWALSRSRFW GTPLPLWTCE EGHLTCVGSR
     AELSELTGTD QSNLDPHRPF IDAVTFACPQ DGCGRTATRV PEVIDAWYDS GSMPFAQWGY
     PYKNKELFES RYPAQFISEA IDQTRGWFYT LMAVGTLVFD KSSYENVVCL GHILAEDGRK
     MSKHLGNILQ PIPLMDQHGA DAVRWFMAAG GSPWAARRVG HGTIQEVVRK TLLTYWNTVA
     FQALYARTSG WAPSEADPAP ADRPVLDRWL LSELHALTDQ VTQALESYDT QRAGKLLSAF
     VDDLSNWYVR RSRRRFWQGD KAALRTLHEV VETVTRLMAP LTPFITERVW QDLVFPVTPG
     APESVHLASW PEADLSAIDP ELSKQMVLVR RLVELGRATR AESGVKTRQP LSRALVAVAG
     FETLDRELHA QITEELNVTS LAALSEVGGS LVDTTAKANF RALGKRFGKG VQAVAKAVAG
     ADAAALSLAL REGTASVEVD GETVTLAPDE VIITETPREG WSVASDSGAT VALDLEITEE
     LRQAGLARDA IRLIQEARKN SGLDVADRIA LRWTSTDPEV IAALSEHSEL IADEVLATDF
     AQGEADDTYG EPFTDESLSL TFRLRKA