ID A0A1G7T7G6_9PSEU Unreviewed; 1034 AA.
AC A0A1G7T7G6;
DT 22-NOV-2017, integrated into UniProtKB/TrEMBL.
DT 22-NOV-2017, sequence version 1.
DT 24-JAN-2024, entry version 23.
DE RecName: Full=Isoleucine--tRNA ligase {ECO:0000256|HAMAP-Rule:MF_02003};
DE EC=6.1.1.5 {ECO:0000256|HAMAP-Rule:MF_02003};
DE AltName: Full=Isoleucyl-tRNA synthetase {ECO:0000256|HAMAP-Rule:MF_02003};
DE Short=IleRS {ECO:0000256|HAMAP-Rule:MF_02003};
GN Name=ileS {ECO:0000256|HAMAP-Rule:MF_02003};
GN ORFNames=SAMN05216553_10760 {ECO:0000313|EMBL:SDG31181.1};
OS Lentzea fradiae.
OC Bacteria; Actinomycetota; Actinomycetes; Pseudonocardiales;
OC Pseudonocardiaceae; Lentzea.
OX NCBI_TaxID=200378 {ECO:0000313|EMBL:SDG31181.1, ECO:0000313|Proteomes:UP000199623};
RN [1] {ECO:0000313|Proteomes:UP000199623}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=CGMCC 4.3506 {ECO:0000313|Proteomes:UP000199623};
RA Varghese N., Submissions S.;
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_02003}.
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_02003};
CC -!- COFACTOR:
CC Name=Zn(2+); Xref=ChEBI:CHEBI:29105;
CC Evidence={ECO:0000256|HAMAP-Rule:MF_02003};
CC -!- SUBUNIT: Monomer. {ECO:0000256|HAMAP-Rule:MF_02003}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|HAMAP-Rule:MF_02003}.
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_02003}.
CC -!- SIMILARITY: Belongs to the class-I aminoacyl-tRNA synthetase family.
CC IleS type 2 subfamily. {ECO:0000256|ARBA:ARBA00007078,
CC ECO:0000256|HAMAP-Rule:MF_02003}.
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DR EMBL; FNCC01000007; SDG31181.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1G7T7G6; -.
DR STRING; 200378.SAMN05216553_10760; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000199623; Unassembled WGS sequence.
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; cd07961; Anticodon_Ia_Ile_ABEc; 1.
DR CDD; cd00818; IleRS_core; 1.
DR Gene3D; 3.40.50.620; HUPs; 2.
DR HAMAP; MF_02003; Ile_tRNA_synth_type2; 1.
DR InterPro; IPR001412; aa-tRNA-synth_I_CS.
DR InterPro; IPR002300; aa-tRNA-synth_Ia.
DR InterPro; IPR033709; Anticodon_Ile_ABEc.
DR InterPro; IPR002301; Ile-tRNA-ligase.
DR InterPro; IPR023586; Ile-tRNA-ligase_type2.
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; PTHR42780:SF1; ISOLEUCINE--TRNA LIGASE, CYTOPLASMIC; 1.
DR PANTHER; PTHR42780; SOLEUCYL-TRNA SYNTHETASE; 1.
DR Pfam; PF08264; Anticodon_1; 1.
DR Pfam; PF19302; DUF5915; 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; 2.
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_02003};
KW ATP-binding {ECO:0000256|ARBA:ARBA00022840, ECO:0000256|HAMAP-
KW Rule:MF_02003};
KW Cytoplasm {ECO:0000256|ARBA:ARBA00022490, ECO:0000256|HAMAP-Rule:MF_02003};
KW Ligase {ECO:0000256|ARBA:ARBA00022598, ECO:0000256|HAMAP-Rule:MF_02003};
KW Metal-binding {ECO:0000256|HAMAP-Rule:MF_02003};
KW Nucleotide-binding {ECO:0000256|ARBA:ARBA00022741, ECO:0000256|HAMAP-
KW Rule:MF_02003};
KW Protein biosynthesis {ECO:0000256|ARBA:ARBA00022917, ECO:0000256|HAMAP-
KW Rule:MF_02003}; Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 25..642
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 693..830
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 58..68
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 608..612
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 611
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1034 AA; 115957 MW; A5CC277DDF3E5CFE CRC64;
MAYPRAGANE VPAQPSFPNL EQDVLGYWKD DQTFQASIDR NPAGEQGENE FVFYDGPPFA
NGLPHYGHLL TGYVKDVVPR YQTMRGKHVE RRFGWDTHGM PAEYEAEKQL GITQKAEIDE
LGIEKFNEAC RTSVLQYTDQ WRDYVTRQAR WVDFENDYKT LDLDYMESVM WAFKALWDKG
LIYEGFRVLW YCWRCQTPLS NTETKMDDAY RDRQDPAVTV ALRLESGERA LVWTTTPWTL
PSNLAAAVHP DVDYVTVVGS DGEKYLLAEA RVAAYARELG EEPEVVARCK GSDLVGRKYL
PPFDFFVGRT NAHQVLAADY VTTDDGTGIV HIAPAFGEDD KAVTDAAGIE VVVPVGPDGE
FTAEVAPYRG VHVFEANKLI IRDLKEAGLL LRHETYDHPY PHCWRCNNPL IQRALSAWFV
AVTQFKDRMV ELNQQINWVP GHIKDGQFGK WLENARDWNI SRNRYWGSPL PVWVSDDPEF
PRTDVYGSLD ELERDFGVRP DNLHRPYIDE LTRPNPDDPS GRSTMRRVPD VLDCWFESGS
MSFAQVHYPF ENADWFENHY PGNFIVEYNG QTRGWFYTLH VLATALFDRP AFRDCVAHGI
VLGDDGQKMS KSLKNYPDVN EVFDRDGSDA MRWFLMASPI LRGGDLIVTE RGIRDAVRQA
VLPLWNSWYF LALYSNAAGK EGTWRVDSTN VLDRYALAKT HDLVRDVQAA MDAYDISGAC
QLVREYLEVL TNWYVRRSRQ RFWDGEQDAI DTLHTVLEVV TRVAAPLLPY TAEVVWRGLT
GGRSVHLTDF PSANDLPADD ALVAAMDEVR DVCSTALSLR KANKLRVRLP LARLTVASPV
AASLEDFAGI VRDEVNVKEV SLSTDVDSYG QFQLVVNARA AGPRLGPNVQ KVIKAVKAGD
WTSEDGKVVA AGVELFEGEY EQRLVATDPA ATAALPGGAG VVVLDTVVTP ELEAEGLARD
LVRVVQQARK DAKLDVSDRI TLTLELPESV RSAVEPHLSF VQAETLTSSV LFGEGTSEGS
VGDGLKVKVA VVKA
//
