SYI_BRAHW
ID SYI_BRAHW Reviewed; 923 AA.
AC C0R112;
DT 28-JUL-2009, integrated into UniProtKB/Swiss-Prot.
DT 05-MAY-2009, sequence version 1.
DT 03-AUG-2022, entry version 84.
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=BHWA1_01321;
OS Brachyspira hyodysenteriae (strain ATCC 49526 / WA1).
OC Bacteria; Spirochaetes; Brachyspirales; Brachyspiraceae; Brachyspira.
OX NCBI_TaxID=565034;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 49526 / WA1;
RX PubMed=19262690; DOI=10.1371/journal.pone.0004641;
RA Bellgard M.I., Wanchanthuek P., La T., Ryan K., Moolhuijzen P.,
RA Albertyn Z., Shaban B., Motro Y., Dunn D.S., Schibeci D., Hunter A.,
RA Barrero R., Phillips N.D., Hampson D.J.;
RT "Genome sequence of the pathogenic intestinal spirochete Brachyspira
RT hyodysenteriae reveals adaptations to its lifestyle in the porcine large
RT intestine.";
RL PLoS ONE 4:E4641-E4641(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; CP001357; ACN83800.1; -; Genomic_DNA.
DR RefSeq; WP_012670845.1; NC_012225.1.
DR AlphaFoldDB; C0R112; -.
DR SMR; C0R112; -.
DR STRING; 565034.BHWA1_01321; -.
DR PRIDE; C0R112; -.
DR EnsemblBacteria; ACN83800; ACN83800; BHWA1_01321.
DR KEGG; bhy:BHWA1_01321; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_12; -.
DR OMA; HLGTAWN; -.
DR Proteomes; UP000001803; 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; Zinc.
FT CHAIN 1..923
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000189131"
FT MOTIF 57..67
FT /note="'HIGH' region"
FT MOTIF 602..606
FT /note="'KMSKS' region"
FT BINDING 561
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 605
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 895
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
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 915
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"
SQ SEQUENCE 923 AA; 106036 MW; 8CD96E23E8FC1439 CRC64;
MDYSSTINLP KTAFPMKAGL KEKEPKIIKK WEEEKLYQQL RELRKGAPKC ILHDGPPYAN
GDIHIGTSLN KIIKDIIVRY KSAKGFDSPY VPGWDCHGMP IELKVQESLG DKYKETSKFI
MRKKCRAYAQ KYIDIQRKEF KRLGVMGDWE NPYLTMSPEY ESEIVEVFAQ LVEKGYIYKG
LRTIHWCMDC ETALAAAEIE YDDNHTSTSV YVRFPVLNKI NDKLDGNVDV MIWTTTPWTL
PSNMACAFNR DLEYVAVEID GRYAIMTTSL VDTVLSKKDM KAEGRDMIPV SMEDIEKLEI
AHPFIKDRKS AVVFADYVEA TAGTGIVHTA PGHGMEDYQT GMNYGLEIYC PVDKAGRYTS
DFPEMQGMKV RDANPKVVEI LENNGSLYHK EKVTHSYPIC WRCKNPLIFR ATSQWFMNMT
HDDIDKRTVK ALDNIKWYPT WGHDRMQKML ENRPDWCLSR QRSWGVPIPA FYCKNCGKTL
LTAESTRHFA EIVKTKGMDV WFELEAKDLL PEGTKCECGS TDFDKEQDIL DVWFDSGVSS
FAAQKTNKDL DGVFPVDIYL EGGDQYRGWF QAAIWPSMAI RGIPPYKELV THGWTLDEQG
RAMHKSAGNV VSPLEVIDKY GADILRLWCI SEDFTHNARV GDNMMKAIAD NYRKIRNTFR
YLLGNISDFD FTKEKIEVKD LLPVDRYALS RLHSFIKVAE KACDGYEFHL FYQRLINYCV
VELSATYFDI IKDRLYCDRK DSVSRRSAQT VLVEILDVLV KLIAPVLPFT TDEVWGYYKG
ENASSVHLEL YPKADDNLID LELEKEWTSI LKVRDDVLLS LERARDNSTI GKSLEAYVTI
CTKEPATKEL LTKYEKYLNE IFIVSKVTLS DSKDDTFIEG GVSFVKTEKA SHEKCVRCWG
HYDSVGTDSE HKELCTRCAE AVR
