SYI_GEOKA
ID SYI_GEOKA Reviewed; 924 AA.
AC Q5L0V9;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-FEB-2005, sequence version 1.
DT 03-AUG-2022, entry version 113.
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=GK1136;
OS Geobacillus kaustophilus (strain HTA426).
OC Bacteria; Firmicutes; Bacilli; Bacillales; Bacillaceae; Geobacillus;
OC Geobacillus thermoleovorans group.
OX NCBI_TaxID=235909;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=HTA426;
RX PubMed=15576355; DOI=10.1093/nar/gkh970;
RA Takami H., Takaki Y., Chee G.-J., Nishi S., Shimamura S., Suzuki H.,
RA Matsui S., Uchiyama I.;
RT "Thermoadaptation trait revealed by the genome sequence of thermophilic
RT Geobacillus kaustophilus.";
RL Nucleic Acids Res. 32:6292-6303(2004).
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; BA000043; BAD75421.1; -; Genomic_DNA.
DR RefSeq; WP_011230636.1; NC_006510.1.
DR AlphaFoldDB; Q5L0V9; -.
DR SMR; Q5L0V9; -.
DR STRING; 235909.GK1136; -.
DR EnsemblBacteria; BAD75421; BAD75421; GK1136.
DR KEGG; gka:GK1136; -.
DR PATRIC; fig|235909.7.peg.1238; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_9; -.
DR OMA; HLGTAWN; -.
DR Proteomes; UP000001172; 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 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..924
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098390"
FT MOTIF 57..67
FT /note="'HIGH' region"
FT MOTIF 593..597
FT /note="'KMSKS' region"
FT BINDING 552
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 596
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
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"
FT BINDING 894
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 911
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 914
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 924 AA; 104696 MW; 887AB7BF2479F713 CRC64;
MDYKETLLMP KTDFPMRGNL PKREPEMQKK WEEMDIYRKV QERTKGRPLF VLHDGPPYAN
GDIHMGHALN KILKDIIVRY KSMSGYCAPY VPGWDTHGLP IETALAKQGV DRKSMSVAEF
RKRCEQYAYE QIDNQRRQFK RLGVRGDWDN PYITLKPEYE AQQIKVFGEM AKKGLIYKGL
KPVYWSPSSE SALAEAEIEY KDKRSPSIYV AFPVKNGKGV LEGDERIVIW TTTPWTIPAN
LAIAVHPDLD YHVVDVSGKR YVVAAALAES VAKEIGWDAW SVVKTVKGKE LEYVVARHPF
YERDSLVVCG EHVTTDAGTG CVHTAPGHGE DDFLVGQKYG LPVLCPVDER GYMTEEAPGF
AGMFYEDANK AITQKLEEVG ALLKLGFITH SYPHDWRTKQ PTIFRATTQW FASIDKIRNE
LLQAIKETKW IPEWGEIRIH NMVRDRGDWC ISRQRAWGVP IPVFYGENGE PIITDETIEH
VSNLFRQYGS NVWFEREAKD LLPEGFTHPS SPNGIFTKET DIMDVWFDSG SSHQAVLVER
DDLVRPADLY LEGSDQYRGW FNSSLSTAVA VTGKAPYKGV LSHGFVLDGE GRKMSKSLGN
VVVPAKVMEQ FGADILRLWV ASVDYQADVR ISDHILKQVS EVYRKIRNTF RFMLGNLFDF
DPNQNAVPIG ELGEVDRYML AKLNKLIAKV KKAYDSYDFA AVYHEMNHFC TVELSAFYLD
MAKDILYIEA ADSRARRAVQ TVLYETVVAL AKLIAPILPH TADEVWEHIP NRRENVESVQ
LTDMPEPIAI DGEEALLAKW DAFMDVRDDI FKALENARNE KVIGKSLTAS VIVYPKDEAR
KLLASLDADL RQLLIVSAFS IADEPYDAAP AEAERLDHVA VIVRPAEGET CERCWTVTKE
VGADPSHPTL CPRCAHIVNE HYSA
