SYI_MYCPU
ID SYI_MYCPU Reviewed; 888 AA.
AC Q98PQ2;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 01-OCT-2001, sequence version 1.
DT 03-AUG-2022, entry version 115.
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=MYPU_6670;
OS Mycoplasmopsis pulmonis (strain UAB CTIP) (Mycoplasma pulmonis).
OC Bacteria; Tenericutes; Mollicutes; Mycoplasmataceae; Mycoplasmopsis.
OX NCBI_TaxID=272635;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=UAB CTIP;
RX PubMed=11353084; DOI=10.1093/nar/29.10.2145;
RA Chambaud I., Heilig R., Ferris S., Barbe V., Samson D., Galisson F.,
RA Moszer I., Dybvig K., Wroblewski H., Viari A., Rocha E.P.C., Blanchard A.;
RT "The complete genome sequence of the murine respiratory pathogen Mycoplasma
RT pulmonis.";
RL Nucleic Acids Res. 29:2145-2153(2001).
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; AL445565; CAC13840.1; -; Genomic_DNA.
DR PIR; C90595; C90595.
DR RefSeq; WP_010925468.1; NC_002771.1.
DR AlphaFoldDB; Q98PQ2; -.
DR SMR; Q98PQ2; -.
DR STRING; 272635.MYPU_6670; -.
DR EnsemblBacteria; CAC13840; CAC13840; CAC13840.
DR KEGG; mpu:MYPU_6670; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_0_14; -.
DR OMA; HLGTAWN; -.
DR OrthoDB; 32262at2; -.
DR BioCyc; MPUL272635:G1GT6-677-MON; -.
DR Proteomes; UP000000528; 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..888
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098425"
FT MOTIF 61..71
FT /note="'HIGH' region"
FT MOTIF 592..596
FT /note="'KMSKS' region"
FT BINDING 551
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 595
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 862
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 865
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 879
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 882
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 888 AA; 103303 MW; CCECB4F79293A390 CRC64;
MNEKKDYKDT LNMPQTNFEM QAGLTRKEAQ FRQRWLDNKL YHKILAKNKN NKQFVVHDGP
PYANGSIHIG HALNKILKDI VVRFKSLQGF YSPFVPGWDT HGLPIENKML SELKVNHKQI
EVVKLRKEAA KYALNQMLIQ KEQFLKLQML SDFEEIYLTL DKNFEAKQLK LFKKMFFDGL
IYKGLKPVYW SPSSMSALAE AEVEYYDHVS PSIYTCFTIT KGNEFVEVDD ELLIWTTTPW
TLIANSGVAV GLDIEYSKVK FNKKNYIVAS DLLEKVMEIF GVQKYKVVDT FKGKNLLGVE
YQRPIKTDLF GIVVAGYHVS IDAGTGLVHM APLFGEDDFI IGQENELDQI MHINDDGSIN
SEGDEFQGLF YSSANIKIKE FLEKNDKVMF FEYFTHSYPH DWRTKKPIIF RGTPQWFVSI
DKIKPAILKE IEKIEGRPSW AVKRLATMIE NRKTWTISRQ RSWGVPIPIF YNEKNEIVND
EKVFDHVIEL VEKYGSDVWF EKSVDELLPS EYKNKNWTKE TNIMDVWFDS GSTSIGVEIE
GVSVPFDLYL EGIDQYRGWF NSSIINSVAY WGQSPYRLLL SHGFVLDGKG KKMSKQLGNV
VDPQEIIQKY GADILRLWVA NCEYAHDVSV SESIIKQTVE NYRKIRNTIK FLLGNLQDYD
HSKFNLKLEG IHELINERLK KVKFDILQAY NDYDFNDVIK TLTNFLTDLS SFYLSISKDS
LYADKINSKE RRMIQYNMYN ILEATLVVIA PIMPTTAEDA YDNFNKQDKQ ESVHLEKMFE
ATIADDKLEK TWKEFFDLKD EVYKEIEVEI ANKKIKRTND AHVTINTKSN FLMSLDLKKL
LMIGKISFGS SLRVETFDSH KCPRCWNHIE KTEVVEDLCQ RCYQTINS
