ID   SYI_CAMLR               Reviewed;         921 AA.
AC   B9KD44;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   03-AUG-2022, entry version 82.
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=Cla_1161;
OS   Campylobacter lari (strain RM2100 / D67 / ATCC BAA-1060).
OC   Bacteria; Proteobacteria; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=306263;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=RM2100 / D67 / ATCC BAA-1060;
RX   PubMed=18713059; DOI=10.1089/fpd.2008.0101;
RA   Miller W.G., Wang G., Binnewies T.T., Parker C.T.;
RT   "The complete genome sequence and analysis of the human pathogen
RT   Campylobacter lari.";
RL   Foodborne Pathog. Dis. 5:371-386(2008).
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; CP000932; ACM64483.1; -; Genomic_DNA.
DR   RefSeq; WP_012661866.1; NC_012039.1.
DR   AlphaFoldDB; B9KD44; -.
DR   SMR; B9KD44; -.
DR   STRING; 306263.Cla_1161; -.
DR   PRIDE; B9KD44; -.
DR   EnsemblBacteria; ACM64483; ACM64483; CLA_1161.
DR   GeneID; 7410325; -.
DR   KEGG; cla:CLA_1161; -.
DR   PATRIC; fig|306263.5.peg.1149; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_1_7; -.
DR   OMA; PSWYIRT; -.
DR   OrthoDB; 32262at2; -.
DR   Proteomes; UP000007727; 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; 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   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.
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..921
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_1000189141"
FT   MOTIF           59..69
FT                   /note="'HIGH' region"
FT   MOTIF           610..614
FT                   /note="'KMSKS' region"
FT   BINDING         569
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         613
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         894
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         897
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         909
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         912
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   921 AA;  106124 MW;  16261B95FDBB0591 CRC64;
     MDYKDTLLLP NTTFAMRANL AELEPKRFDK WFENNYAYEK MKQKRQGVSE SFTLHDGPPY
     ANGHLHIGHA LNKILKDIII KMHYFQGKKV RFTPGWDCHG LPIEQQVEVK LKDKKQNLSK
     KQIRELCREH AREFVNIQRD EFKSLGVIAD WDEPYLTMKN AFEADIYKAL CKIAKKGLLL
     ERSKPVFWSW AAKSALAEAE VEYEEKEDYS IYVAFNLDEA SCKKLGVENA KAVIWTTTPW
     TLPANQAISL NPNEKYIITK EGYIFAKALL ENMINKNFTQ GEIQKELLGS EFENLSAINP
     LNQRKSTLIL GEHVLMDGGT GLVHTAPGHG EDDYYACLKY NIEVIMPVDD GGYYDETLRA
     KGLLPEHLLA EFIGLHIFKA NERILELLGE ALLESSKFTH SYPFCWRTHK PVIYRATKQW
     FILMDEKKLD GKSLRELALE QLNSVKFYPE SGVKRLSSMI ENRPDWCISR QRDWGVPIAF
     FRDKKSQEVI FDDDVLDHLV GIFEKNGADA WWDLEIKDLL PPNSKYNPNN LEKVYDILDV
     WFDSGSTWEA VLNSARYDAG EYQASMYLEG SDQHRGWFQS SLLISTAINH KTPYKNILTH
     GFTVDEKGQK MSKSKGNVVL PQNVAKNYGV EILRLWIMLS DYSTDLKISD NILKQVSEQY
     RKIRNTIRFL LANTNDIEFV ETKNFTLLDK WILMRAKIAF EICENAFEKY EFSKGFSVLL
     NFLSADLSGI YLDICKDRLY CNAKDDSKRV SAQSAMVLIA RKLFALLAPS LTYTIDEALE
     HANVAIKENA KDVFDLLNKQ GFEYEYKIED ELFIKSREKF FEIIDGLKKD KIIKSTLELS
     LQTSANELLS EDLEEIADWF MVSVVESIDE QKALAEFKID NIGFKIVKSS LNKCPRCWKF
     LAKEDGCLCP RCNGVEKAKN V