ID   B1LSB2_METRJ            Unreviewed;       988 AA.
AC   B1LSB2;
DT   29-APR-2008, integrated into UniProtKB/TrEMBL.
DT   29-APR-2008, sequence version 1.
DT   27-MAR-2024, entry version 105.
DE   RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02002};
DE            EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02002};
DE   AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02002};
DE            Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02002};
GN   Name=ileS {ECO:0000256|HAMAP-Rule:MF_02002};
GN   OrderedLocusNames=Mrad2831_1798 {ECO:0000313|EMBL:ACB23793.1};
OS   Methylobacterium radiotolerans (strain ATCC 27329 / DSM 1819 / JCM 2831 /
OS   NBRC 15690 / NCIMB 10815 / 0-1).
OC   Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC   Methylobacteriaceae; Methylobacterium.
OX   NCBI_TaxID=426355 {ECO:0000313|EMBL:ACB23793.1, ECO:0000313|Proteomes:UP000006589};
RN   [1] {ECO:0000313|EMBL:ACB23793.1, ECO:0000313|Proteomes:UP000006589}
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27329 / DSM 1819 / JCM 2831 / NBRC 15690 / NCIMB 10815 /
RC   0-1 {ECO:0000313|Proteomes:UP000006589};
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA   Bruce D., Goodwin L., Pitluck S., Kiss H., Brettin T., Detter J.C., Han C.,
RA   Kuske C.R., Schmutz J., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Mikhailova N., Marx C.J., Richardson P.;
RT   "Complete sequence of chromosome of Methylobacterium radiotolerans JCM
RT   2831.";
RL   Submitted (MAR-2008) 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:0000256|ARBA:ARBA00025217, ECO:0000256|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;
CC         Evidence={ECO:0000256|ARBA:ARBA00000114, ECO:0000256|HAMAP-
CC         Rule:MF_02002};
CC   -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02002}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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:0000256|HAMAP-Rule:MF_02002}.
CC   -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC       IleS type 1 subfamily. {ECO:0000256|ARBA:ARBA00006887,
CC       ECO:0000256|HAMAP-Rule:MF_02002}.
CC   -!- CAUTION: Lacks conserved residue(s) required for the propagation of
CC       feature annotation. {ECO:0000256|HAMAP-Rule:MF_02002}.
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DR   EMBL; CP001001; ACB23793.1; -; Genomic_DNA.
DR   AlphaFoldDB; B1LSB2; -.
DR   STRING; 426355.Mrad2831_1798; -.
DR   KEGG; mrd:Mrad2831_1798; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_5; -.
DR   OrthoDB; 9810365at2; -.
DR   Proteomes; UP000006589; 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:0006428; P:isoleucyl-tRNA aminoacylation; IEA:UniProtKB-UniRule.
DR   CDD; cd07960; Anticodon_Ia_Ile_BEm; 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   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 {ECO:0000256|ARBA:ARBA00023146,
KW   ECO:0000256|HAMAP-Rule:MF_02002};
KW   ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW   Rule:MF_02002};
KW   Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_02002};
KW   Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02002};
KW   Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW   Rule:MF_02002};
KW   Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW   Rule:MF_02002}.
FT   DOMAIN          37..692
FT                   /note="Aminoacyl-tRNA synthetase class Ia"
FT                   /evidence="ECO:0000259|Pfam:PF00133"
FT   DOMAIN          737..886
FT                   /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT                   anticodon-binding"
FT                   /evidence="ECO:0000259|Pfam:PF08264"
FT   REGION          952..988
FT                   /note="Disordered"
FT                   /evidence="ECO:0000256|SAM:MobiDB-lite"
FT   MOTIF           66..76
FT                   /note="'HIGH' region"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   MOTIF           654..658
FT                   /note="'KMSKS' region"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         613
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT   BINDING         657
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   988 AA;  109463 MW;  99A43E3AF21F3147 CRC64;
     MTAPETAPAR DYSKTLFLPQ TEFPMRAGLP VREPLFIERW KRMDLYGKLR AAGRDRPKFV
     LHDGPPYANG NIHIGTALNK ILKDVVVRSQ TALGFDANYV PGWDCHGLPI EWKIEEQYRA
     KGRNKDDVPV IEFRQECRTF AAQWLDVQRE EFKRLGVTGD WDHPYATMAF PAEAVIADEL
     MKFSMSGQLY RGSKPVMWSV VEKTALAEAE VEYEEHVSDT VFVAFPIRSG AEGDLAAARV
     VIWTTTPWTI PGNRAVAYSK KIAYGLYRVT EAPADNWATP GQTYVLADSL AATVFKAARV
     EAFARVADVS PSTLAGLTLD HPLAKLGYGF AVPMLDGDHV TDESGTGFVH TAPSHGREDF
     ELWMASGRLL RERGIDATIP YTVDADSVLT EAAPGFTGTR VLTAKGEKGD ANKAVIAALT
     EAGALIARGV LRHQYPHSWR SKKPVIFRNT PQWFIAMDRP VDSLGNRTLR EVALQGIDDT
     QWVPTQGKNR ITGMVANRPD WVVSRQRAWG VPITVFVHRE TAEILRDARV NARIRDAFAA
     EGADAWFRDD AAQRFLAPDH DPAAYEKVTD VLDVWFDSGS THAFVLDDPE AFPGLAGVKR
     VRDGGRDRVM YLEGSDQHRG WFQSSLLESA GTRGRAPYDI VLTHGFVLDG KGLKMSKSKG
     NVVAPQSVIK DSGADILRLW VAASDYTDDL RIGPEIIKTF AETYRKLRNS LRWMLGSLAH
     RVPGDDVAYA DMPELERLIL HRLAELDGEI REAYAAFDTK RVVALLNGFM TGDLSSFYFD
     VRKDALYCDP VSSVRRRASL QVIDEAFRRV AIWLAPVLAF TAEEAWLDRY PSEDGSVHLQ
     TLPETPADWL DPALAERWHR IRRVRRVVTG ALEIERAAKR IGASLEAAPT VYVADPELLA
     ALEGCDFADT CITSAITVVA GEGPAEAFRL DEVRGVAVVP SPAEGRKCAR SWRVSPSVGS
     DPDYPEVTPR DAQALREWDA AHPEASAA
//