ID   SYI_CHRSD               Reviewed;         946 AA.
AC   Q1R0B5;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   16-MAY-2006, sequence version 1.
DT   27-MAR-2024, entry version 122.
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=Csal_0481;
OS   Chromohalobacter salexigens (strain ATCC BAA-138 / DSM 3043 / CIP 106854 /
OS   NCIMB 13768 / 1H11).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Oceanospirillales;
OC   Halomonadaceae; Chromohalobacter.
OX   NCBI_TaxID=290398;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-138 / DSM 3043 / CIP 106854 / NCIMB 13768 / 1H11;
RX   PubMed=22675587; DOI=10.4056/sigs.2285059;
RA   Copeland A., O'Connor K., Lucas S., Lapidus A., Berry K.W., Detter J.C.,
RA   Del Rio T.G., Hammon N., Dalin E., Tice H., Pitluck S., Bruce D.,
RA   Goodwin L., Han C., Tapia R., Saunders E., Schmutz J., Brettin T.,
RA   Larimer F., Land M., Hauser L., Vargas C., Nieto J.J., Kyrpides N.C.,
RA   Ivanova N., Goker M., Klenk H.P., Csonka L.N., Woyke T.;
RT   "Complete genome sequence of the halophilic and highly halotolerant
RT   Chromohalobacter salexigens type strain (1H11(T)).";
RL   Stand. Genomic Sci. 5:379-388(2011).
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; CP000285; ABE57843.1; -; Genomic_DNA.
DR   RefSeq; WP_011505789.1; NC_007963.1.
DR   AlphaFoldDB; Q1R0B5; -.
DR   SMR; Q1R0B5; -.
DR   STRING; 290398.Csal_0481; -.
DR   KEGG; csa:Csal_0481; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_1_6; -.
DR   OrthoDB; 9810365at2; -.
DR   Proteomes; UP000000239; 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   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..946
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_1000022057"
FT   MOTIF           58..68
FT                   /note="'HIGH' region"
FT   MOTIF           609..613
FT                   /note="'KMSKS' region"
FT   BINDING         568
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         612
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
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"
FT   BINDING         928
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         931
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   946 AA;  106075 MW;  406F144C22F5787F CRC64;
     MSDYKHTLNL PETDFPMRGM LPKREPGRVS QWQDMNLYQR LRDARAGREV FVLHDGPPYA
     NGSIHIGHAV NKILKDIVVK SKSLAGYDAP YVPGWDCHGL PIEHKVETTH GKHLEADEAR
     GLCREYAGAQ IEGQKTDFVR LGVVGDWENP YRTMDFANEA GEIRALAKMV EGGYVFKGLK
     PVNWCFDCGS ALAEAEVEYA DKKSDAIDVA FAAAEPEALA SAFGLASLDK PAAIVIWTTT
     PWTIPANQAL NVHPDFTYAL VDTGELLLVL AEELVESCLT RYGLEGDVVA TAAGASLEFI
     TFRHPFYERV APVYLADYVT VEEGSTGIVH SAPSYGLDDF MTCREHGMSF DDMLNPVQGN
     GVYRDDLPLF GGQMIWKANP HIVDTLREVN ALMAHTPITH SYMHCWRHKT PVIYRATAQW
     FVGMDREDDQ GRTLRQRALD GVEATQFIPA WGKARLHSMI ANRPDWCISR QRNWGVPIPF
     FMHKQTGEWH PRTVELMEDV ARRVEAEGID AWFRLDAREL LGDEADQYDK VTDTLDVWFD
     SGTTHRHVMR GSHPMGHDQG PRADLYLEGS DQHRGWFHSS LLTGCAIDGH APYKALLTHG
     FTVDEKGRKM SKSMGNVIAP QQVMDKLGAD ILRLWVASTD YSGEMAVSDE ILKRTADVYR
     RIRNTSRFLL ANLNGFAPER DAVAFEDMLA LDQWVVDRAA QLQARIQGAY AEYRFRDVYQ
     QVHDFCAHEL GGFYLDVIKD RQYTTQADSR SRRSCQTALY HVVEALVRWV APILSFTAEE
     IYEVIPGTRG DSVLLEEYYP HLATLEANAA MGREFWSRVL TVKQAVNKCL EDARNAKVVR
     NSLAAEVTLY ADDSLRETLT QLGEELRFVL LTSEVHLASL EDAGSAQAEA SELEGLKVAV
     VSSPHAKCER CWHHRADVGT HAADPNLCGR CLSNLPEGPG ETRRYA
//