SYI_ACTP2
ID SYI_ACTP2 Reviewed; 938 AA.
AC A3MYB6;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 03-APR-2007, sequence version 1.
DT 03-AUG-2022, entry version 101.
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=APL_0044;
OS Actinobacillus pleuropneumoniae serotype 5b (strain L20).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Pasteurellales;
OC Pasteurellaceae; Actinobacillus.
OX NCBI_TaxID=416269;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=L20;
RX PubMed=18065534; DOI=10.1128/jb.01845-07;
RA Foote S.J., Bosse J.T., Bouevitch A.B., Langford P.R., Young N.M.,
RA Nash J.H.E.;
RT "The complete genome sequence of Actinobacillus pleuropneumoniae L20
RT (serotype 5b).";
RL J. Bacteriol. 190:1495-1496(2008).
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; CP000569; ABN73152.1; -; Genomic_DNA.
DR RefSeq; WP_005614268.1; NC_009053.1.
DR AlphaFoldDB; A3MYB6; -.
DR SMR; A3MYB6; -.
DR STRING; 416269.APL_0044; -.
DR EnsemblBacteria; ABN73152; ABN73152; APL_0044.
DR GeneID; 66258880; -.
DR KEGG; apl:APL_0044; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_1_6; -.
DR OMA; PSWYIRT; -.
DR Proteomes; UP000001432; 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..938
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000022036"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT MOTIF 603..607
FT /note="'KMSKS' region"
FT BINDING 562
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 606
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 901
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 904
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 921
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 924
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 938 AA; 105762 MW; 0525D82650508888 CRC64;
MIDYKNTLNL PETGFPMRGD LAKREPDMLK NWYDKNLYQK VRESSKGKKS FILHDGPPYA
NGNIHIGHAV NKILKDIIMK SKTALGFDTP YVPGWDCHGL PIELKVEGIV GKPNEKISAA
EFRQACRDYA KEQVEGQKAD FIRMGILGDW DNPYLTMNFD TEAHIIRTLG KVIANGHLYK
GSKPVHWCLD CGSSLAEAEV EYEDKVSPSI YVRFKAIDSA AVEAKFNAVG KGSGQISAVI
WTTTPWTLPS NKAISINPEF DYQLVQFGDE RVVLVKDLVE SVQKAVGVES VEVLGEVKGD
ALELMQFQHP FYDYSVPLIL GDHVTTDGGT GLVHTAPDHG QDDFVVSKKY NIEMAGLVAN
DGKFISSTPF FAGLGVFESN EKVLEKLKEV GALLKLERIK HSYPHCWRHK TPIIFRATPQ
WFIGMETQGL REQALGEIKS VRWIPSWGEA RIDTMVANRP DWCISRQRTW GVPMTMFVHN
ETEELHPRTL EILESVAKRV EEKGIQAWWD LDPVEVLGEE DAKNYRKVPD TLDVWFDSGS
TYASVVEARP EFNGNSTDMY LEGSDQHRGW FMSSLMLSTA TNGKAPYKQV LTHGFVVDEK
GRKMSKSLGN VIVPSEVWNK NGADILRLWV ASTDYTGEIA VSHNILNSAG ESYRRIRNTA
RFLLANLNGF DPKRDLVKPE EMIALDRWAV SCALEAQNDI KEAYDNYQFH TVVQRLMRFC
SIEMGSFYLD IIKDRQYTTK ADSLARRSCQ TALWHIAEAL VRWMAPILSF TADEIWSYLP
QVEGRSEFVF TEEFYEGLFG LTEADKLDDA YWQQILKVRA ESNRVLEQAR KDKVIGSGLE
AKVTLYANNE IRAMLEQLGN ELRFVLITSQ AIIKPLSEAD VAEGEMAGLA VKVERAEGEK
CPRCWHFATD IGTHTEHSSV CGRCVENVAG EGEKRSFA
