ID   SYI_MICAN               Reviewed;         952 AA.
AC   B0JSP4;
DT   20-MAY-2008, integrated into UniProtKB/Swiss-Prot.
DT   18-MAR-2008, sequence version 1.
DT   27-MAR-2024, entry version 93.
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=MAE_11160;
OS   Microcystis aeruginosa (strain NIES-843 / IAM M-2473).
OC   Bacteria; Cyanobacteriota; Cyanophyceae; Oscillatoriophycideae;
OC   Chroococcales; Microcystaceae; Microcystis.
OX   NCBI_TaxID=449447;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=NIES-843 / IAM M-247;
RX   PubMed=18192279; DOI=10.1093/dnares/dsm026;
RA   Kaneko T., Nakajima N., Okamoto S., Suzuki I., Tanabe Y., Tamaoki M.,
RA   Nakamura Y., Kasai F., Watanabe A., Kawashima K., Kishida Y., Ono A.,
RA   Shimizu Y., Takahashi C., Minami C., Fujishiro T., Kohara M., Katoh M.,
RA   Nakazaki N., Nakayama S., Yamada M., Tabata S., Watanabe M.M.;
RT   "Complete genomic structure of the bloom-forming toxic cyanobacterium
RT   Microcystis aeruginosa NIES-843.";
RL   DNA Res. 14:247-256(2007).
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; AP009552; BAG00938.1; -; Genomic_DNA.
DR   RefSeq; WP_012264589.1; NC_010296.1.
DR   AlphaFoldDB; B0JSP4; -.
DR   SMR; B0JSP4; -.
DR   STRING; 449447.MAE_11160; -.
DR   PaxDb; 449447-MAE_11160; -.
DR   EnsemblBacteria; BAG00938; BAG00938; MAE_11160.
DR   KEGG; mar:MAE_11160; -.
DR   PATRIC; fig|449447.4.peg.1022; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_3; -.
DR   BioCyc; MAER449447:MAE_RS04920-MONOMER; -.
DR   Proteomes; UP000001510; 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; Zinc.
FT   CHAIN           1..952
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_1000088549"
FT   MOTIF           60..70
FT                   /note="'HIGH' region"
FT   MOTIF           603..607
FT                   /note="'KMSKS' region"
FT   BINDING         562
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         606
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         921
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         924
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         941
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         944
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   952 AA;  107865 MW;  EF727BAFF613E084 CRC64;
     MSNAKSYKDT VNLPQTDFDM RANASKREPE IQKFWQDEQI YEKLAQNNPK ELFILHDGPP
     YANGSLHIGH ALNKILKDII NKYKLLQGYK VRYVPGWDCH GLPIELKVLQ SLKSSEKEGL
     TPVKLRQKAH DFALQTQKEQ CEGFKRYGVW GDWENPYLTL QPEYEAAQIA VFGKMALKGY
     IYRGLKPVHW SPSSQTALAE AELEYPEGHT SRSVYVAFPI TSVSTPVLRP FLPNLSVAIW
     TTTPWTLPGN LAVALNPELN YSVVETSESN YLIVATDLVE KLADTFNRTL TIKATVKGLE
     LEHTKYRHPL FDRESAILIG GDYVTTDSGT GLVHTAPGHG QEDYIVGQRY GLPILSPVDD
     KGNFTAEAGQ FAGLNVLKDA NEAIILALTE KGALLKEEAY QHKYPYDWRT KKPTIFRATE
     QWFASVEGFR ELALEAIDSV RWIPATGKNR ITSMVSERSD WCISRQRSWG VPIPVFYDEE
     TNEPLLTEET INHVQAIFGV KGSNAWWELS VEELLPPSYR NNGRSYRKGM DTMDVWFDSG
     SSWNAVANAR PELSYPADMY LEGSDQHRGW FQSSLLTSVA ANGIAPYKTV LTHGFVLDEQ
     GRKMSKSLGN VIDPNVIING GKDQKKEPAY GVDVIRLWVS SVDYTNDVNI GQNILKQLVD
     IRNKIRNTAR FLLGSLNDFD PVKDAVAYED LPEIDRYMLH RISEVFTEVT AAFESFQFFR
     FFQTVQNFCV VDLSNFYIDI AKDRLYISDP NSFRRRSCQT VYAIALENLA KAIAPVLSHL
     AEDIWQFLPY KTPYLSVFES GWLNIDPAWN NRELADKWAK FRQLRTEVNK VMETARNDKA
     IGASLEAKVL LYVPDESLQQ ELELFNNCDS LTGNKVDELR YLFLSSQVEL VSDISAIQTA
     EYKGESDFVS VGIVKAEGEK CDRCWNYSTQ VGKFADDPTI CERCNAALKG EF
//