ID   SYI_MESH7               Reviewed;         886 AA.
AC   Q4A8Y0;
DT   20-DEC-2005, integrated into UniProtKB/Swiss-Prot.
DT   29-MAY-2007, sequence version 2.
DT   27-MAR-2024, 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};
GN   OrderedLocusNames=MHP7448_0032;
OS   Mesomycoplasma hyopneumoniae (strain 7448) (Mycoplasma hyopneumoniae).
OC   Bacteria; Mycoplasmatota; Mycoplasmoidales; Metamycoplasmataceae;
OC   Mesomycoplasma.
OX   NCBI_TaxID=262722;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=7448;
RX   PubMed=16077101; DOI=10.1128/jb.187.16.5568-5577.2005;
RA   Vasconcelos A.T.R., Ferreira H.B., Bizarro C.V., Bonatto S.L.,
RA   Carvalho M.O., Pinto P.M., Almeida D.F., Almeida L.G.P., Almeida R.,
RA   Alves-Junior L., Assuncao E.N., Azevedo V.A.C., Bogo M.R., Brigido M.M.,
RA   Brocchi M., Burity H.A., Camargo A.A., Camargo S.S., Carepo M.S.,
RA   Carraro D.M., de Mattos Cascardo J.C., Castro L.A., Cavalcanti G.,
RA   Chemale G., Collevatti R.G., Cunha C.W., Dallagiovanna B., Dambros B.P.,
RA   Dellagostin O.A., Falcao C., Fantinatti-Garboggini F., Felipe M.S.S.,
RA   Fiorentin L., Franco G.R., Freitas N.S.A., Frias D., Grangeiro T.B.,
RA   Grisard E.C., Guimaraes C.T., Hungria M., Jardim S.N., Krieger M.A.,
RA   Laurino J.P., Lima L.F.A., Lopes M.I., Loreto E.L.S., Madeira H.M.F.,
RA   Manfio G.P., Maranhao A.Q., Martinkovics C.T., Medeiros S.R.B.,
RA   Moreira M.A.M., Neiva M., Ramalho-Neto C.E., Nicolas M.F., Oliveira S.C.,
RA   Paixao R.F.C., Pedrosa F.O., Pena S.D.J., Pereira M., Pereira-Ferrari L.,
RA   Piffer I., Pinto L.S., Potrich D.P., Salim A.C.M., Santos F.R., Schmitt R.,
RA   Schneider M.P.C., Schrank A., Schrank I.S., Schuck A.F., Seuanez H.N.,
RA   Silva D.W., Silva R., Silva S.C., Soares C.M.A., Souza K.R.L., Souza R.C.,
RA   Staats C.C., Steffens M.B.R., Teixeira S.M.R., Urmenyi T.P.,
RA   Vainstein M.H., Zuccherato L.W., Simpson A.J.G., Zaha A.;
RT   "Swine and poultry pathogens: the complete genome sequences of two strains
RT   of Mycoplasma hyopneumoniae and a strain of Mycoplasma synoviae.";
RL   J. Bacteriol. 187:5568-5577(2005).
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; Evidence={ECO:0000255|HAMAP-
CC         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; AE017244; AAZ53409.2; -; Genomic_DNA.
DR   RefSeq; WP_020835502.1; NC_007332.1.
DR   AlphaFoldDB; Q4A8Y0; -.
DR   SMR; Q4A8Y0; -.
DR   KEGG; mhp:MHP7448_0032; -.
DR   HOGENOM; CLU_001493_7_1_14; -.
DR   Proteomes; UP000000553; 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   CDD; cd00818; IleRS_core; 1.
DR   Gene3D; 1.10.730.20; -; 1.
DR   Gene3D; 3.40.50.620; HUPs; 2.
DR   Gene3D; 1.10.10.830; Ile-tRNA synthetase CP2 domain-like; 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   NCBIfam; TIGR00392; ileS; 1.
DR   PANTHER; PTHR42765:SF1; ISOLEUCINE--TRNA LIGASE, MITOCHONDRIAL; 1.
DR   PANTHER; PTHR42765; SOLEUCYL-TRNA SYNTHETASE; 1.
DR   Pfam; PF08264; Anticodon_1; 1.
DR   Pfam; PF00133; tRNA-synt_1; 1.
DR   PRINTS; PR00984; TRNASYNTHILE.
DR   SUPFAM; SSF47323; Anticodon-binding domain of a subclass of class I aminoacyl-tRNA synthetases; 1.
DR   SUPFAM; SSF52374; Nucleotidylyl transferase; 1.
DR   SUPFAM; SSF50677; ValRS/IleRS/LeuRS editing domain; 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_0000098419"
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;  104109 MW;  1CFF2F4FADEE3977 CRC64;
     MDKNFYKNSL NIFNSNFSMK ANLSEKDKFY ADFWEKNQIY QQILRKRRGN PRFILHDGPP
     YANGDIHIGH ALNKILKDII VRYKTMAGFY SPFVPGWDTH GLPIENKIIN QIGSKSTLEI
     RRKSNDFANS QILAQMAQFK KLNLLTDFKQ IYQTNTPNYE AKQLKLFKKM VSRGLVYRAL
     KPVYWSPSSQ SALAEAEIEY LEYRSPSLFT SFDIKKGNNF VAENDKLIIW TTTPWTLIAN
     SGVAVGENFD YVRIKNEENF YVLAANLLEK LAAIFDWKHY EIIDNFPGKS ILGIKYLHPI
     FEKICPIVSG NHVSLDVGSG LVHLAPLFGE DDYWIGRENN LEMVMHVNDD GKFNENAGQF
     SGQFYANSNK 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 KDILYADKKE
     SLKRRQVQYN LYELLQVLNI AIAPIMPTTA EEIYSFIQKN NKQISVHMEE FFKESHFDEE
     LVAKWDEFFQ IKDSVYQLIE QKIKSKEIKR PNEVGVLLKT DSDFIKSIDL EKLLMVAKVE
     FSNEKTEILQ LNWEKCPRCW NHFEKINKVC ARCFEVLSEI VPEKNS
//