ID SYI_PSEFS Reviewed; 943 AA.
AC C3KDX4;
DT 22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT 16-JUN-2009, sequence version 1.
DT 27-MAR-2024, entry version 102.
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=PFLU_0768;
OS Pseudomonas fluorescens (strain SBW25).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Pseudomonadales;
OC Pseudomonadaceae; Pseudomonas.
OX NCBI_TaxID=216595;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SBW25;
RX PubMed=19432983; DOI=10.1186/gb-2009-10-5-r51;
RA Silby M.W., Cerdeno-Tarraga A.M., Vernikos G.S., Giddens S.R.,
RA Jackson R.W., Preston G.M., Zhang X.-X., Moon C.D., Gehrig S.M.,
RA Godfrey S.A.C., Knight C.G., Malone J.G., Robinson Z., Spiers A.J.,
RA Harris S., Challis G.L., Yaxley A.M., Harris D., Seeger K., Murphy L.,
RA Rutter S., Squares R., Quail M.A., Saunders E., Mavromatis K.,
RA Brettin T.S., Bentley S.D., Hothersall J., Stephens E., Thomas C.M.,
RA Parkhill J., Levy S.B., Rainey P.B., Thomson N.R.;
RT "Genomic and genetic analyses of diversity and plant interactions of
RT Pseudomonas fluorescens.";
RL Genome Biol. 10:R51.1-R51.16(2009).
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; AM181176; CAY47037.1; -; Genomic_DNA.
DR RefSeq; WP_012722139.1; NC_012660.1.
DR AlphaFoldDB; C3KDX4; -.
DR SMR; C3KDX4; -.
DR STRING; 294.SRM1_04902; -.
DR PATRIC; fig|216595.4.peg.1004; -.
DR eggNOG; COG0060; Bacteria.
DR HOGENOM; CLU_001493_7_1_6; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000002332; 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; 1.10.730.20; -; 1.
DR Gene3D; 3.40.50.620; HUPs; 2.
DR Gene3D; 3.90.740.10; Valyl/Leucyl/Isoleucyl-tRNA synthetase, editing domain; 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 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 Pfam; PF06827; zf-FPG_IleRS; 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; Reference proteome; Zinc.
FT CHAIN 1..943
FT /note="Isoleucine--tRNA ligase"
FT /id="PRO_1000216244"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT MOTIF 608..612
FT /note="'KMSKS' region"
FT BINDING 567
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 611
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 906
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 909
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 926
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
FT BINDING 929
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_02002"
SQ SEQUENCE 943 AA; 105453 MW; AFEDCE736855C2A0 CRC64;
MTDYKATLNL PDTAFPMKAG LPQREPQILQ RWDSIGLYGK LREIGKDRPK FVLHDGPPYA
NGTIHIGHAL NKILKDMILR SKTLSGFDAP YVPGWDCHGL PIEHKVEVTY GKNLGADKTR
ELCRAYATEQ IEGQKSEFIR LGVLGEWDNP YKTMNFKNEA GEIRALAEIV KGGFVFKGLK
PVNWCFDCGS ALAEAEVEYE DKKSSTIDVA FPVADDAKLA EAFGLASLSK PAAIVIWTTT
PWTIPANQAL NVHPEFTYAL VDVGDRLLVL AEEMVEACLA RYELQGSVIA TTTGSALELI
NFRHPFYDRL SPVYLADYVE LGAGTGIVHS APAYGVDDFV TCKAYGMVND DILNPVQSNG
VYAPSLEFFG GQFIFKANDS IIDKLSEVGS LLHTETIKHS YMHCWRHKTP LIYRATAQWF
IGMDKEPTSG DTLRVRSLKA IEDTQFVPAW GQARLHSMIA NRPDWCISRQ RNWGVPIPFF
LNKESGELHP RTVELMEEVA QRVELEGIEA WFKMDAAELL GDEAPQYDKI SDTLDVWFDS
GTTHWHVLRG SHPMGHETGP RADLYLEGSD QHRGWFHSSL LTGCAIDNHA PYRELLTHGF
TVDETGRKMS KSLKNVIEPK KINDTLGADI MRLWVASTDY SGEIAVSDQI LARSADAYRR
IRNTARFLLS NLTGFNPATD ILPAEDMLAL DRWAVDRTLL LQRELQENYG EYRFWNVYSK
IHNFCVQELG GFYLDIIKDR QYTTGANSKA RRSAQTALYH ISEALVRWIA PILAFTADEL
WEYLPGERNE SVMLNTWYEG LTELPADFEL GREYWEGVMA VKVAVNKELE VQRAAKAVGG
NLQAEVTLFA EAGLTADLAK LSNELRFVLI TSTASLAPFA QAPADAVATE VPGLKLKVVK
SAFPKCARCW HCREDVGVNP EHPEICGRCV DNISGAGEVR HYA
//
