ID   SYI_DESDA               Reviewed;         938 AA.
AC   B8J3R3;
DT   28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT   03-MAR-2009, sequence version 1.
DT   27-MAR-2024, entry version 86.
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=Ddes_0385;
OS   Desulfovibrio desulfuricans (strain ATCC 27774 / DSM 6949 / MB).
OC   Bacteria; Thermodesulfobacteriota; Desulfovibrionia; Desulfovibrionales;
OC   Desulfovibrionaceae; Desulfovibrio.
OX   NCBI_TaxID=525146;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 27774 / DSM 6949 / MB;
RG   US DOE Joint Genome Institute;
RA   Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Tice H., Bruce D.,
RA   Goodwin L., Pitluck S., Sims D., Lu M., Kiss H., Meineke L., Brettin T.,
RA   Detter J.C., Han C., Larimer F., Land M., Hauser L., Kyrpides N.,
RA   Ovchinnikova G., Hazen T.C.;
RT   "Complete sequence of Desulfovibrio desulfuricans subsp. desulfuricans str.
RT   ATCC 27774.";
RL   Submitted (JAN-2009) 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; CP001358; ACL48298.1; -; Genomic_DNA.
DR   AlphaFoldDB; B8J3R3; -.
DR   SMR; B8J3R3; -.
DR   STRING; 525146.Ddes_0385; -.
DR   KEGG; dds:Ddes_0385; -.
DR   eggNOG; COG0060; Bacteria.
DR   HOGENOM; CLU_001493_7_0_7; -.
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..938
FT                   /note="Isoleucine--tRNA ligase"
FT                   /id="PRO_1000189150"
FT   MOTIF           58..68
FT                   /note="'HIGH' region"
FT   MOTIF           607..611
FT                   /note="'KMSKS' region"
FT   BINDING         566
FT                   /ligand="L-isoleucyl-5'-AMP"
FT                   /ligand_id="ChEBI:CHEBI:178002"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         610
FT                   /ligand="ATP"
FT                   /ligand_id="ChEBI:CHEBI:30616"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         906
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         909
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         926
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT   BINDING         929
FT                   /ligand="Zn(2+)"
FT                   /ligand_id="ChEBI:CHEBI:29105"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ   SEQUENCE   938 AA;  105767 MW;  9B0797693ACB46A0 CRC64;
     MSDYKKTLNL PQTAFPMKAN LAQREPEAIK KWEAANACAA MVEASGSEGT YILHDGPPYA
     NGHLHMGHAL NKILKDIIVK SRNMAGYASW YVPGWDCHGL PIEHKVEQDL KEKKKSLPAH
     VVRKLCREYA NKWLDVQRKE FKRLGVLGDW DHPYISMDPA YEAVTAGELA KFVAAGGVAR
     AKKPIYWCCS CHTALAEAEV EYNDHTSPSV YVRFALPDEG LKKVFAAADP ARAHVVIWTT
     TPWTLPDNMA VCLHPEFTYA LVEAEGSQYI LAEELVASCA ETFGWSEYTI LDRATGERLE
     GLKARHPFYD RQSSLVLGLH VTLDAGTGCV HTAPGHGRED YDVALKYGLE IYSPMDDAGR
     FLPAVEFFAG LNVFEANPKV VEKLEEVGAL LQKGKIRHSY PHCWRCKEPV IFRATTQWFI
     SMEKNDLRTR ALKAIDEEVR WIPAWGRERI HNMVEFRPDW CISRQRQWGV PILALLCEDC
     GEAWNDPAWM QEIAARFAKH PTGCDYWYEA ELKDVVPEGL ACPHCGGNHW KRETDILDVW
     FDSGTSFAAV LEKRPELGFP ADLYLEGSDQ HRGWFHSSLL VSEGTRGCAP YRAVLTHGYV
     VDGDGRKMSK SVGNVIAPQE LIEKFGAEIV RLWVSSVEYR EDIRLSDEIL GRLVDAYRRI
     RNTCRFIMGN LSDITAHDLL SLDRLQPLDR FALDVAGRVH ERVQQAYMDF DFHKVYHTLH
     NYCVTDLSSV YLDILKDRLY ASAPHSDERR SAQTALWHIL CLLLRDMAPV LSFTAEEIFS
     HLPESLRGPE TTVFALPPLA AAPYLLDEGT RDDWNVLLAV RGAVTKAIEP MRREGIIGHS
     LDTRITLFVA DELRQRLEGL HTDLRAVCIV SQLHLEALDR APQAAYRDEE VAGLAIGVEK
     ARGEKCERCW IYSTELGSDA SHPALCPRCT AVIKGMES
//