ID A0A1E1F068_9SPHN Unreviewed; 961 AA.
AC A0A1E1F068;
DT 18-JAN-2017, integrated into UniProtKB/TrEMBL.
DT 18-JAN-2017, sequence version 1.
DT 24-JAN-2024, entry version 32.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02002};
DE EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02002};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02002};
DE Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02002};
GN Name=ileS {ECO:0000256|HAMAP-Rule:MF_02002};
GN ORFNames=SCLO_1008630 {ECO:0000313|EMBL:BAV63903.1};
OS Sphingobium cloacae.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Sphingomonadales;
OC Sphingomonadaceae; Sphingobium.
OX NCBI_TaxID=120107 {ECO:0000313|EMBL:BAV63903.1, ECO:0000313|Proteomes:UP000218272};
RN [1] {ECO:0000313|EMBL:BAV63903.1, ECO:0000313|Proteomes:UP000218272}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=JCM 10874 {ECO:0000313|EMBL:BAV63903.1,
RC ECO:0000313|Proteomes:UP000218272};
RA Ootsuka M., Nishizawa T., Ohta H.;
RT "Complete Genome Sequence of the Nonylphenol-Degrading Bacterium
RT Sphingobium cloacae JCM 10874T.";
RL Submitted (OCT-2016) to the EMBL/GenBank/DDBJ databases.
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:0000256|ARBA:ARBA00025217, ECO:0000256|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;
CC Evidence={ECO:0000256|ARBA:ARBA00000114, ECO:0000256|HAMAP-
CC Rule:MF_02002};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02002};
CC Note=Binds 1 zinc ion per subunit. {ECO:0000256|HAMAP-Rule:MF_02002};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02002}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|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:0000256|HAMAP-Rule:MF_02002}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 1 subfamily. {ECO:0000256|ARBA:ARBA00006887,
CC ECO:0000256|HAMAP-Rule:MF_02002}.
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DR EMBL; AP017655; BAV63903.1; -; Genomic_DNA.
DR RefSeq; WP_066514225.1; NZ_AP017655.1.
DR AlphaFoldDB; A0A1E1F068; -.
DR KEGG; sclo:SCLO_1008630; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000218272; 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; 1.10.10.830; Ile-tRNA synthetase CP2 domain-like; 1.
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 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 {ECO:0000256|ARBA:ARBA00023146,
KW ECO:0000256|HAMAP-Rule:MF_02002};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_02002};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_02002};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02002};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_02002};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_02002};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_02002}; Reference proteome {ECO:0000313|Proteomes:UP000218272};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02002}.
FT DOMAIN 31..691
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 760..895
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 61..71
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT MOTIF 653..657
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 612
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 656
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 935
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 938
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 952
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 955
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ SEQUENCE 961 AA; 107810 MW; 683E0A0280BD9355 CRC64;
MTDQPDYKST VFLPVTDFPM KAGLAQKEPA ILARWEAMDL YGKLRERRKG RERFILHDGP
PYANGDIHMG HAMNKVLKDI IVRSQSLLGK DAPYVPGWDC HGLPIEWKIE EEYRKKKQNK
DEVPAQEFRA QCRAYADKWV GVQKEQFKRL GVMGDWDDPY LTMKFDAEAT IVGELLKFAE
SGQLYRGAKP VMWSPVEKTA LAEAEVEYED ITSTQIDVAF EIVDAADSGL QSWVTTAKAA
GRSVYALIWT TTPWTIPVNQ ALAYGADIDY VLVAIGNSYL LIAENLVSAV LARLGESAWL
SEGQGISFAW TGKGSQLAGA VARHPMHHLG GFFAKPRPLL AGDFVTTDAG TGLVHMAPDH
GEDDFALCKE NGINPVFAVE GDGKYRPDWL WLGGQGSVIN PKFVSKDGPI CTDLREAGAL
LAASDDFRHS YPHSWRSKAK IIFRCTPQWF IPMDRPQDGV PVDVDGSFLP TPIIVGNGPT
LRDVALDAIA HTRWVPERST NRIRSMVEGR PDWVISRQRA WGVPIALYVH RKSGEYLVDK
AVNERIVEAF RQGGADAWFG ADHQALLGSD YDLADYEVVN DILDVWFDSG STHAFTVEAR
YGEDVRADLY LEGSDQHRGW FQSSLLESCG TRGRAPYDAV LTHGFALDGQ GRKMSKSLGN
VVDPLKIMAE SGADILRVWV ASTDYFDDVR IGKEVLAGSS DAYRKLRNTF RYLLGALSDF
SEEEKIPVGE MPELERYMLH LLAKLDEELR GIVDRKAGSE NWLEFSRYTR ALMDFANSDL
SAFFFDIRKD CLYCDAKSDP RRRAYRTVLD TLFHALVRYA APIIPFTAEE VWQSRFPDEA
ESVHFLEWPE VDGHWANHGL GEKWAEIRDQ RDQVNEAIEP LRREKIVRSS LEADVMMGER
VPVGDVDFAE VAIVARVDMG VGDGIVVNPS EWHKCGRCWR LLPEVEEDGA LCNRCDEVLK
A
//