SYI_MESH2
ID SYI_MESH2 Reviewed; 886 AA.
AC Q602B7;
DT 20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT 23-NOV-2004, sequence version 1.
DT 03-AUG-2022, entry version 116.
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=mhp033;
OS Mesomycoplasma hyopneumoniae (strain 232) (Mycoplasma hyopneumoniae).
OC Bacteria; Tenericutes; Mollicutes; Mycoplasmataceae; Mesomycoplasma.
OX NCBI_TaxID=295358;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=232;
RX PubMed=15489423; DOI=10.1128/jb.186.21.7123-7133.2004;
RA Minion F.C., Lefkowitz E.J., Madsen M.L., Cleary B.J., Swartzell S.M.,
RA Mahairas G.G.;
RT "The genome sequence of Mycoplasma hyopneumoniae strain 232, the agent of
RT swine mycoplasmosis.";
RL J. Bacteriol. 186:7123-7133(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; AE017332; AAV27692.1; -; Genomic_DNA.
DR RefSeq; WP_011205872.1; NC_006360.1.
DR AlphaFoldDB; Q602B7; -.
DR SMR; Q602B7; -.
DR STRING; 295358.mhp033; -.
DR EnsemblBacteria; AAV27692; AAV27692; mhp033.
DR KEGG; mhy:mhp033; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_1_14; -.
DR OMA; HLGTAWN; -.
DR Proteomes; UP000006822; 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; Zinc.
FT CHAIN 1..886
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_0000098418"
FT MOTIF 60..70
FT /note="'HIGH' region"
FT MOTIF 587..591
FT /note="'KMSKS' region"
FT BINDING 546
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 590
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 856
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 859
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 870
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 873
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 886 AA; 104166 MW; 64AD4D3BBF79306A CRC64;
MDKNFYKNSL NIFNSNFSMK ANLSEKDKFY ADFWEKNQIY QQILRKRRGN PRFILHDGPP
YANGDIHIGH ALNKILKDII VRYKTMAGFY SPFVPGWDTH GLPIENKIIN QIGSKSTLEI
RRKSNDFANS QILAQMKQFK KLNLLTDFKQ IYQTNTPNYE AKQLKLFKKM VSRGLVYRAL
KPVYWSPSSQ SALAEAEIEY LEYRSPSLFT SFDIKKGNNF VAENDKLIIW TTTPWTLIAN
SGVAVGENFD YVRIKNGENF YVLAANLLEK LAVIFDWKHY EIIDNFPGKS ILGIKYLHPI
FEKICPIVSG NHVSLDVGSG LVHLAPLFGE DDYWIGRENN LEMVMHVNDD GKFNENAGQF
SGQFYADSNK LITEFLEKKS KILHLSFIDH SFPHDWRTLK PVIYRGTPQW FVSIEKIKKD
LEKAIEEIEF PENWLKKRLT KMVVERKDWL ISRQRSWGIP LIIFYDQNKE PVLDKPEIFD
YIISLVEKFG SRIWYEKTTD ELLPEKYQNL GWTKENDILD VWFDSGVSFF AANISDEKPP
FDIYFEGSDQ YRGWFNSSLI NSVIYFGFSP YKKLLSHGFV VDAKGNKMSK SRGNGVDPLV
ILSKYGCDIF RLWVANSEYY NDIVYSEAIF EQNVEIYRKI RNTVRFLITN LADFKPKKYE
LTEVDLYIFN KIQKLKNEII QNYDQNRFVR VVKIINNFII EFSNFYLSIV KDILYADKEE
SLKRRQVQYN LYELLQVLNI AIAPIMPTTA EEIYSFIQKN NKQISVHMEE FFKKSHFDEE
LDAKWDEFFQ IKDSVYQLIE QKIKSKEIKR PNEVGVLLKT DSDFIKSIDL EKLLMVAKVE
FSNEKTEILQ LNWEKCPRCW NHFEKINKVC ARCFEVLNEI VPEKNS
