ID B3Q7Z5_RHOPT Unreviewed; 1004 AA.
AC B3Q7Z5;
DT 02-SEP-2008, integrated into UniProtKB/TrEMBL.
DT 02-SEP-2008, sequence version 1.
DT 27-MAR-2024, entry version 101.
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 OrderedLocusNames=Rpal_4861 {ECO:0000313|EMBL:ACF03350.1};
OS Rhodopseudomonas palustris (strain TIE-1).
OC Bacteria; Pseudomonadota; Alphaproteobacteria; Hyphomicrobiales;
OC Nitrobacteraceae; Rhodopseudomonas.
OX NCBI_TaxID=395960 {ECO:0000313|EMBL:ACF03350.1, ECO:0000313|Proteomes:UP000001725};
RN [1] {ECO:0000313|EMBL:ACF03350.1, ECO:0000313|Proteomes:UP000001725}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TIE-1 {ECO:0000313|EMBL:ACF03350.1,
RC ECO:0000313|Proteomes:UP000001725};
RG US DOE Joint Genome Institute;
RA Lucas S., Copeland A., Lapidus A., Glavina del Rio T., Dalin E., Tice H.,
RA Pitluck S., Chain P., Malfatti S., Shin M., Vergez L., Lang D., Schmutz J.,
RA Larimer F., Land M., Hauser L., Kyrpides N., Mikhailova N., Emerson D.,
RA Newman D.K., Roden E., Richardson P.;
RT "Complete sequence of Rhodopseudomonas palustris TIE-1.";
RL Submitted (MAY-2008) 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 -!- 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: Lacks conserved residue(s) required for the propagation of
CC feature annotation. {ECO:0000256|HAMAP-Rule:MF_02002}.
CC ---------------------------------------------------------------------------
CC Copyrighted by the UniProt Consortium, see https://www.uniprot.org/terms
CC Distributed under the Creative Commons Attribution (CC BY 4.0) License
CC ---------------------------------------------------------------------------
DR EMBL; CP001096; ACF03350.1; -; Genomic_DNA.
DR RefSeq; WP_012497577.1; NC_011004.1.
DR AlphaFoldDB; B3Q7Z5; -.
DR KEGG; rpt:Rpal_4861; -.
DR HOGENOM; CLU_001493_7_1_5; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000001725; 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: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 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 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}.
FT DOMAIN 40..708
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 753..902
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 70..80
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT MOTIF 670..674
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 629
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 673
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ SEQUENCE 1004 AA; 111475 MW; 2AAEFF892CAF18C1 CRC64;
MSDKPKTDAA QSGNDYSKTL FLPQTEFPMR AGLPQREPEL LKRWEEMDLY GKLRESARGR
AKFVLHDGPP YANGNIHIGH ALNKILKDVV TKSQQMLGFD SNYVPGWDCH GLPIEWKIEE
ENYRSKGKPK PNFKDSAAII AFRKECRAYA DKWLNVQREE FKRLGVIGDW DHPYATMNYA
AEAQIARELM KFAANGTLYR GSKPVMWSVV EKTALAEAEV EYEDYTSDTV WVKFPVKTGD
ASTKGASVVI WTTTPWTLPG NRAISFSSKI AYGLYKVTDA PADNWAKTGD LLILADGLAE
SVFKQARVVA YEKVSDVGAD VLKASECAHP LQGLAGGYEF TVPLLDGDHV TDDTGTGFVH
TAPGHGREDF DIWTQSARAL EARGIASKIP YTVDENGALT EQAPGFTGKR VINDKGEKGD
ANEAVIGALV ERGMLLARGR LKHQYPHSWR SKKPVIFRNT PQWFIAMDKD IVDDGVAKPG
DTLRARALQA ISVTQWVPPA GQNRINGMIS GRPDWVISRQ RAWGVPIAVF IKDKGDGSVD
ILQDEIVNQR IAEAFMQEGA DAWYAEGAAE RFLGERAAEG WQKVDDILDV WFDSGSTHAF
VLEDAQNFPG LAGIRRKVDG GADTVMYLEG SDQHRGWFHS SLLESCGTRG RAPYDVVLTH
GFTLDEQGRK MSKSLGNTTD PAKVIASSGA DILRLWVCAT DYADDQRIGP EILKNVVETY
RKLRNSIRWM LGTLHHYKRD EAVAFEDMPE LERLMLHQLA EQSATIRAAY AEFDYKTVVA
SLAAFMNTEL SAFYFDIRKD TLYCDPPSSL ARKAALTTID IICDAILKWL APVLSFTADE
AWGMYRPDAE PSVHLTLFPL DLGAYRDEAL AKKWTLIRAV RRVVTGALEV ERAAKRIGSS
LEASPMIYLP EAFMGDIFDV DWAEICITSN AMVEILRGND TPPADAFRLP ELADVAVVVE
RAQGTKCARS WKILSSVGSD PDYPDVSPRD AQALREWKAL GAPV
//
