ID   SYI_MALP2               Reviewed;         900 AA.
AC   Q8EUN9;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   01-MAR-2003, sequence version 1.
DT   27-MAR-2024, entry version 123.
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=MYPE8820;
OS   Malacoplasma penetrans (strain HF-2) (Mycoplasma penetrans).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Mycoplasmoidaceae;
OC   Malacoplasma.
OX   NCBI_TaxID=272633;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=HF-2;
RX   PubMed=12466555; DOI=10.1093/nar/gkf667;
RA   Sasaki Y., Ishikawa J., Yamashita A., Oshima K., Kenri T., Furuya K.,
RA   Yoshino C., Horino A., Shiba T., Sasaki T., Hattori M.;
RT   "The complete genomic sequence of Mycoplasma penetrans, an intracellular
RT   bacterial pathogen in humans.";
RL   Nucleic Acids Res. 30:5293-5300(2002).
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; BA000026; BAC44673.1; -; Genomic_DNA.
DR   RefSeq; WP_011077702.1; NC_004432.1.
DR   AlphaFoldDB; Q8EUN9; -.
DR   SMR; Q8EUN9; -.
DR   STRING; 272633.gene:10732004; -.
DR   KEGG; mpe:MYPE8820; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_14; -.
DR   InParanoid; Q8EUN9; -.
DR   Proteomes; UP000002522; 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; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 1.
DR   HAMAP; MF_02002; Ile_tRNA_synth_type1; 1.
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.
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..900
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_0000098423"
FT   MOTIF           58..68
FT                   /note="'HIGH' region"
FT   MOTIF           591..595
FT                   /note="'KMSKS' region"
FT   BINDING         550
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         594
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         871
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         874
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         888
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         891
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   900 AA;  104162 MW;  E7710FE7B619458C CRC64;
     MSDYKKTLSM PNTNFEMKAN LSVKETKIQE NWVLEKIEKK ILAKNKSNTP FIIADGPPYA
     NGDLHTGHAL NKILKDIILR FKASVGFYTK YIPGWDTHGL PIEQEMAKRG LNKNANQTIT
     EKRKNCKNFA IENVYKQRDQ FRRLGILSEM DEIYVTCDLD YVIRQIKIFN KMLSKGLIYQ
     DLKPVYWSWS SQTALADAEI IYQDVESDSI YVSLEILDKN EFVSKGDKVI IWTTTPWTLP
     SNLAIAANPK VTYCRVQVEN SVYVISKNLV EKLAETLEWT NYEILSEFSG KKLENLPYKS
     PISDKKCKII VDGYVSDSDG TGLVHNAPGF GHEDYLACKK YNIKPYCPID NLGKFTGEVN
     DKELAGLFYK DANPIIIERL AKKKLLLKAS KFTHSAAHDW RTKKPVIYRA TKQWFVNIDK
     ISKEIVAALN KVKSIDNTII KKIKEMVLNR QEWCISRQRI WGVPICIIYD KDYNPILDPK
     LLNNIVDILN DEGINAWYNE DAKYFLTDSY NTSKKYIKET DIMDVWFDSG TSYSVLQADK
     LGYPADLYFE GKDQFRGWFN SSLITSVAAF KKSPYKELLT HGFVLDENGN KMSKSLGNII
     DPLQVCKEYG ADVLRLWVAS VDFSKDVSIS KDIIAQNAEL YRRIRNTLFR FILGNLNGFN
     LKKLRGAKYS EADLYVLSCL SNDIKTIKAC YDKYDFKQIV KIVSKNVADL SSWYFDYIKD
     PLYCEKEDNE QRIAIQATLY QLLDSYLRIL APIIPHTCEE AYEFFDKKDK QKSVHLEGFT
     NFKIDSKYKV DFKKWEEFFD LKDKVYSEIE KTRNEKVINS KGQAHITIHS KSLPFDEQTL
     ERYLGVAKVE FKVKEKDGTT IKVKNSKYAR CERCWNYYPT NLIANELCER CKKVIGNKKI
//