SYI_HALOH
ID SYI_HALOH Reviewed; 929 AA.
AC B8CWL4;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 03-MAR-2009, sequence version 1.
DT 03-AUG-2022, entry version 78.
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}; OrderedLocusNames=Hore_09270;
OS Halothermothrix orenii (strain H 168 / OCM 544 / DSM 9562).
OC Bacteria; Firmicutes; Clostridia; Halanaerobiales; Halanaerobiaceae;
OC Halothermothrix.
OX NCBI_TaxID=373903;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=H 168 / OCM 544 / DSM 9562;
RX PubMed=19145256; DOI=10.1371/journal.pone.0004192;
RA Mavromatis K., Ivanova N., Anderson I., Lykidis A., Hooper S.D., Sun H.,
RA Kunin V., Lapidus A., Hugenholtz P., Patel B., Kyrpides N.C.;
RT "Genome analysis of the anaerobic thermohalophilic bacterium
RT Halothermothrix orenii.";
RL PLoS ONE 4:E4192-E4192(2009).
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;
CC Evidence={ECO:0000255|HAMAP-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; CP001098; ACL69683.1; -; Genomic_DNA.
DR RefSeq; WP_012635870.1; NC_011899.1.
DR AlphaFoldDB; B8CWL4; -.
DR SMR; B8CWL4; -.
DR STRING; 373903.Hore_09270; -.
DR EnsemblBacteria; ACL69683; ACL69683; Hore_09270.
DR KEGG; hor:Hore_09270; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_9; -.
DR OMA; HLGTAWN; -.
DR OrthoDB; 32262at2; -.
DR Proteomes; UP000000719; 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 Gene3D; 3.40.50.620; -; 2.
DR Gene3D; 3.90.740.10; -; 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 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; SSF47323; 1.
DR SUPFAM; SSF50677; SSF50677; 1.
DR TIGRFAMs; TIGR00392; ileS; 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..929
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000189169"
FT MOTIF 57..67
FT /note="'HIGH' region"
FT MOTIF 601..605
FT /note="'KMSKS' region"
FT BINDING 560
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 604
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 898
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 901
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 918
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
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"
SQ SEQUENCE 929 AA; 106890 MW; CADD37AE9394EAFF CRC64;
MDYKETINLP RTEFPMRANL SKREPGIEKY WEENNVYEKA IKNREGNKQF ILHDGPPYAN
GDIHIGHALN KILKDIVTRY KTLSGYYSPY VPGWDTHGLP IEHKVTKEMG DKAKDLSVSE
LRDKCRDYAL KYVERQKEQF KRLGVWGEWD KPYLTLNPEY EVKQIEVFGE MAKRGLFYKG
KKPVHWCPSC ETALAEAEVE YGEHRSPSIY VKFPLKDKVN VGGVELTPGD SYVVIWTTTP
WTIPANMAIA LHPEFDYVVV KASGEKLVMA RELVDRVMEE AEVENYKVVG QAFKGTELEN
KRCRHPFEDR DSILILGDHV TLEQGTGCVH TAPGHGHDDY LVGLKYDLDI YAPMDNRGVF
TEEAERFAGM YYDDVNKEVT KILDEKGLLM NLSFISHQYP HCWRCKGALI FRATDQWFAS
IEAIKEEALK AIHSVDWYPA WGEERMANMI SERTDWCISR QKKWGVPIPV FYCKDCGHSI
INDETIEAVK KLFAREGSSG WYKYSAEEIL PEGFSCPECG GKSFKKEEDI MDVWFDSGSS
HKAVLETRDH LSWPSQLYLE GTDQYRGWFN SSLLTAVATE GKPPYEAVVT NGFVVDDKGN
KMSKSIGNVV SPQDVIKRYG ADILRLWVAS SNFKDDVRVS DRILKQNSEV YRRIRNTFRF
ILGNINDFNP GQHYVDYNDR AEIDRWIMIK LQDLIKDVTR AYDEYEYHRV YHDVHNFCTI
EMSSLYVDIV KDRLYTDGTN SLSRRSAQST LYDILLVLVK LVAPVLAHTA EEVWQHLDES
SKDAESIFLT DWPEVVNEYY DDRLMSKWDK LLEVRKDVAK ALELSRENKE IGNSLDARVI
LVPVDDKQRQ LLKDNIDILP DLFIVSQVEL QGETGEGFHK GSETGISVSV VKASGEKCAR
CWKYSEAVGN DEEHPELCER CVEVVRTEV
