SYI_MYCMO
ID SYI_MYCMO Reviewed; 885 AA.
AC Q6KHN7;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 05-JUL-2004, 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=MMOB4070;
OS Mycoplasma mobile (strain ATCC 43663 / 163K / NCTC 11711) (Mesomycoplasma
OS mobile).
OC Bacteria; Tenericutes; Mollicutes; Mycoplasmataceae; Mesomycoplasma.
OX NCBI_TaxID=267748;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 43663 / 163K / NCTC 11711;
RX PubMed=15289470; DOI=10.1101/gr.2674004;
RA Jaffe J.D., Stange-Thomann N., Smith C., DeCaprio D., Fisher S., Butler J.,
RA Calvo S., Elkins T., FitzGerald M.G., Hafez N., Kodira C.D., Major J.,
RA Wang S., Wilkinson J., Nicol R., Nusbaum C., Birren B., Berg H.C.,
RA Church G.M.;
RT "The complete genome and proteome of Mycoplasma mobile.";
RL Genome Res. 14:1447-1461(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; AE017308; AAT27893.1; -; Genomic_DNA.
DR RefSeq; WP_011264927.1; NC_006908.1.
DR AlphaFoldDB; Q6KHN7; -.
DR SMR; Q6KHN7; -.
DR STRING; 267748.MMOB4070; -.
DR EnsemblBacteria; AAT27893; AAT27893; MMOB4070.
DR KEGG; mmo:MMOB4070; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_1_14; -.
DR OMA; HLGTAWN; -.
DR OrthoDB; 32262at2; -.
DR Proteomes; UP000009072; 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 Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF00133; tRNA-synt_1; 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..885
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098421"
FT MOTIF 59..69
FT /note="'HIGH' region"
FT MOTIF 591..595
FT /note="'KMSKS' region"
FT BINDING 550
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 594
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 861
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 864
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 877
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 880
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 885 AA; 103616 MW; A0C5A0DAB008E2AF CRC64;
MKNKYKETLN IPQDVLPMRA NLIEKELKFK TFWDQNKIYQ KALEKNKTNK PFILHDGPPY
ANGDLHIGHA LNKILKDIVV RYKSLSGFYA PFVPGWDTHG LPIENKILKE LKIDDHKNIS
TLELRKQARE YALSQIKNQK KQFLTMQLFS DFKDYYQTLD PKFEAEQLKV FKKMALDGLI
YKSLQPVFWS PSSQSALAEA EVEYHEHKSH SIYTAFKIVK GNKFVEKNDF LVIWTTTPWT
LIANSGVSVK EEFSYSKINY ENKNYIFATD LVQKVTEIFG WKNFKIISSF QGKDLVGIEY
QRPIKQEKTA PIVLGHHVTL ESGSGLVHMA PLFGLDDFII GRVEKLEEIM HINDDGSINE
FGNQFANKFY WDANPEINEF LKQNNLLLHH SFLYHSYPHD WRTNKPVIYR GSNQWFVSID
PIKEKITKSI EHVESYPTWG ISRLKTMIDN RTSWTISRQR AWGVPIPIFY NEKNEPVFEE
ELFDHIIDLV SKYGTDIWFE KSTDELLPEK YKNKNWTKEK DIMDVWFDSG TTSMGVKIEG
APVPWDVYLE GSDQYRGWFN SSLINSVVYY NQAPFKKLVS HGFVLDEKGN KMSKSKGNVV
LPQEIISKFG ADILRLWVAN SEYTSDVTIG ENIINQNVEI YRKFRNTFRF LIANLVDFDY
KKDLKELTGI HLLIKEQLET LKFNTKIAYE NFQFTNVIKL TNNFVYNLSS FYLDFSKDIL
YANKIEDLQR KMIQTNFYNI TKTLLLILAP ILPTTIEEVY QIFDQANKKE SVHLENFFGI
SSIETIQEEK WNSFFELKNK VYALIEIAIK DKLIKSANQA LVYIKETDEF LKTLDLKNLL
MVGKVIFSKE NKIENYEGHL CERCRIYFDF IDKDNLCVRC SKVIL
