ID   SYI_CAMC1               Reviewed;         918 AA.
AC   A8Z6P6;
DT   26-FEB-2008, integrated into UniProtKB/Swiss-Prot.
DT   15-JAN-2008, sequence version 1.
DT   27-MAR-2024, entry version 97.
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=Ccon26_16660; ORFNames=CCC13826_0278;
OS   Campylobacter concisus (strain 13826).
OC   Bacteria; Campylobacterota; Epsilonproteobacteria; Campylobacterales;
OC   Campylobacteraceae; Campylobacter.
OX   NCBI_TaxID=360104;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=13826;
RA   Fouts D.E., Mongodin E.F., Puiu D., Sebastian Y., Miller W.G.,
RA   Mandrell R.E., On S., Nelson K.E.;
RT   "Genome sequence of Campylobacter concisus 13826 isolated from human
RT   feces.";
RL   Submitted (OCT-2007) 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; 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; CP000792; ABW74825.1; -; Genomic_DNA.
DR   RefSeq; WP_012140300.1; NC_009802.2.
DR   AlphaFoldDB; A8Z6P6; -.
DR   SMR; A8Z6P6; -.
DR   STRING; 360104.CCC13826_0278; -.
DR   KEGG; cco:CCC13826_0278; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_7; -.
DR   OrthoDB; 9810365at2; -.
DR   Proteomes; UP000001121; 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   CDD; cd00818; IleRS_core; 1.
DR   Gene3D; 1.10.730.20; -; 1.
DR   Gene3D; 3.40.50.620; HUPs; 2.
DR   Gene3D; 1.10.10.830; Ile-tRNA synthetase CP2 domain-like; 1.
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   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   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; Zinc.
FT   CHAIN           1..918
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_1000073707"
FT   MOTIF           59..69
FT                   /note="'HIGH' region"
FT   MOTIF           611..615
FT                   /note="'KMSKS' region"
FT   BINDING         570
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         614
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         893
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         896
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         908
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         911
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   918 AA;  105052 MW;  56BA720A42206B62 CRC64;
     MDYKETLLLP ETNFPMRGNL PQNEPQRLKS WYEERKVYEK MKKNRQNAVK NFNIHDGPPY
     ANGHLHIGHA LNKILKDIIT KTHYFYGENV RYVPGWDCHG LPIEQQVEVK LGDKKKELSK
     VEIRELCRQH AREFIDIQRD EFKTLGIIGD FENPYMTMKF EFEADIYKAL CEIAKKGLLV
     ERSKPVYWSW AARSALAEAE VEYEEKEDYS IYVAFELDGD ALEKLGVKEA SAVIWTTTPW
     TLPANQAISL KPDEIYVLTA ENLIFAKPLL ESVVQSGLSK GEIKKEFKSS LLENTHAINP
     LNGRKSKFLL GDHVMMDGGT GLVHTAPGHG EDDYYVCLKY GFSEILMPVD DGGCYDESIK
     HHGLFRSDVV DEFVGMHIFK ANEKILELLG KSLLSVSKFR HSYPFCWRTH KPVIYRATKQ
     WFIAMDESKL GGKTLRQTAL KELEKVKFYP SVGIKRIGSM IENRPDWCIS RQRDWGVPIA
     FFRDKATKEV IFDSEILDHI AGIFKEKGAD AWWALSIDEL LPKGSKYKAE NLEKVMDILD
     VWFDSGSTWH AVLQSDNYDA GKYPASMYLE GSDQHRGWFQ SSLLVSTAIN SHAPYESILT
     HGFTVDAKGE KMSKSKGNVI APQDVAKTHG VEILRLWVGM SDYSSDLKIS EDILKQISEQ
     YRKIRNTIRF LLANVNDLES LNTEFNILDK WILARAKKVF DEASACFKNY DFSKGFNILL
     NFLSADLSGV YLDVCKDRLY CDAKDAPRRR SAQSAMAIIT KTLLPLIAPT LTYTVDEVMD
     YAPKIIKGEA KDAFDLVYEP IKFDLSFEDE LLFASREKFN EIVDVLKKDK KIKSTLELSL
     ETTNHNITSY DEREVADLYM VSSVRAYDDS EPLAEFELEG DKFKIIASNL HKCPRCWKFN
     ASKEDALCPR CEEVISAK
//