ID A0A0L1JQW9_9RHOB Unreviewed; 962 AA.
AC A0A0L1JQW9;
DT 11-NOV-2015, integrated into UniProtKB/TrEMBL.
DT 11-NOV-2015, sequence version 1.
DT 24-JAN-2024, entry version 40.
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 ECO:0000313|EMBL:KNG94107.1};
GN ORFNames=ATO11_07640 {ECO:0000313|EMBL:KNG94107.1};
OS Pseudaestuariivita atlantica.
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Rhodobacterales;
OC Paracoccaceae; Pseudaestuariivita.
OX NCBI_TaxID=1317121 {ECO:0000313|EMBL:KNG94107.1, ECO:0000313|Proteomes:UP000036938};
RN [1] {ECO:0000313|EMBL:KNG94107.1, ECO:0000313|Proteomes:UP000036938}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=22II-S11-z3 {ECO:0000313|EMBL:KNG94107.1,
RC ECO:0000313|Proteomes:UP000036938};
RA Li G., Lai Q., Du Y., Liu X., Sun F., Shao Z.;
RT "Aestuariivita atlantica sp. nov., isolated from deep sea sediment of the
RT Atlantic Ocean.";
RL Int. J. Syst. Evol. Microbiol. 0:0-0(2015).
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KNG94107.1}.
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DR EMBL; AQQZ01000003; KNG94107.1; -; Genomic_DNA.
DR RefSeq; WP_050530252.1; NZ_AQQZ01000003.1.
DR AlphaFoldDB; A0A0L1JQW9; -.
DR STRING; 1317121.ATO11_07640; -.
DR PATRIC; fig|1317121.7.peg.2135; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000036938; 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; 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 {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:UP000036938};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02002}.
FT DOMAIN 32..682
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 727..873
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT DOMAIN 932..958
FT /note="Zinc finger FPG/IleRS-type"
FT /evidence="ECO:0000259|Pfam:PF06827"
FT MOTIF 61..71
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT MOTIF 644..648
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 603
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 647
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 954
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 957
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ SEQUENCE 962 AA; 108357 MW; 5584A3331E81C467 CRC64;
MCADTPDYKD TLNLPQTDFP MRAGLPKREP DWLARWAEMD VYAMNRAKEG RAPFVLHDGP
PYANGHLHIG HALNKTIKDM IVRSHQMLGF DSRYIPGWDC HGLPIEWKIE EQYRKKGKNK
DAVPINEFRA ECRKFAEGWV DIQREEFKRL GITGNWDDPY LTMDFHAERV IAEEFMKFLM
NGTLYQGSKP VMWSPMEQTA LAEAEVEYHD KDSFTIWVKF RAEGDSDLAG AYVVIWTTTP
WTMPSNKAVV YGENIAYGLY EITGTPDECW ASVGDRYILA NSMAADVLKR ARLDESQYTR
VRDVSAEDLS ALSLKHPLAG AEGSNGEWDD IRDFRAAEFV TDTEGTGFVH CAPSHGMEEY
ELYRDLGMLD QVITYNVKDD GGFRDDLPFF GGTYILSRKG GEGNANTAVI DKLVEVGGLL
ARGKIKHSYP HSWRSKAPVI YRNTPQWFAA IDKQLTIGDD TFTIRARALS EIDKVKWTPP
SGRNRLHSMM ESRPDWVLSR QRAWGVPLTC FTRKGALPTD PDFLLRNPEV NQRIVDAFEA
EGADAWFEDG AKERFLSGIV NPDDYDKVDD VLDVWFDSGS THAFTLRDRE DGSDDGIADV
YMEGTDQHRG WFHSSLLQSV GTTGRAPYRN VVTHGFTLDE KGMKMSKSIG NTIVPDEVVR
QYGADILRLW VAQTDYTSDQ RIGPEILKGT ADSYRRLRNT FRFLLGNLNG WSEGERMDVA
DMPELERFMA HRLSELDAHV RDGYAKFDFQ GVFQALFQFC TVDLSSFYLD IRKDALYCDA
DDSPTRRASR AMLMLLLERL NAWLAPILVF TMEEIWLERT GEGSIHLQDF PDTPDWQDAA
LADKMARIRT VRRAVTGALE LKRTDKTIGA SLEAAPVVHV DADTAAALPD TETLADLCIT
SAITVTTDPA QADAFTTPEA PGVAVVFAEA EGEKCQRCWK ILPDVGTHGH PATCARCDAA
LS
//
