ID A0A0R1R9I9_9LACO Unreviewed; 929 AA.
AC A0A0R1R9I9;
DT 20-JAN-2016, integrated into UniProtKB/TrEMBL.
DT 20-JAN-2016, sequence version 1.
DT 08-OCT-2025, entry version 48.
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=FD01_GL000146 {ECO:0000313|EMBL:KRL53821.1};
OS Lacticaseibacillus manihotivorans DSM 13343 = JCM 12514.
OC Bacteria; Bacillati; Bacillota; Bacilli; Lactobacillales; Lactobacillaceae;
OC Lacticaseibacillus.
OX NCBI_TaxID=1423769 {ECO:0000313|EMBL:KRL53821.1, ECO:0000313|Proteomes:UP000051790};
RN [1] {ECO:0000313|EMBL:KRL53821.1, ECO:0000313|Proteomes:UP000051790}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 13343 {ECO:0000313|EMBL:KRL53821.1,
RC ECO:0000313|Proteomes:UP000051790};
RX PubMed=26415554; DOI=10.1038/ncomms9322;
RA Sun Z., Harris H.M., McCann A., Guo C., Argimon S., Zhang W., Yang X.,
RA Jeffery I.B., Cooney J.C., Kagawa T.F., Liu W., Song Y., Salvetti E.,
RA Wrobel A., Rasinkangas P., Parkhill J., Rea M.C., O'Sullivan O., Ritari J.,
RA Douillard F.P., Paul Ross R., Yang R., Briner A.E., Felis G.E.,
RA de Vos W.M., Barrangou R., Klaenhammer T.R., Caufield P.W., Cui Y.,
RA Zhang H., O'Toole P.W.;
RT "Expanding the biotechnology potential of lactobacilli through comparative
RT genomics of 213 strains and associated genera.";
RL Genome Announc. 6:8322-8322(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=tRNA(Ile) + L-isoleucine + ATP = L-isoleucyl-tRNA(Ile) + AMP +
CC diphosphate; Xref=Rhea:RHEA:11060, Rhea:RHEA-COMP:9666, Rhea:RHEA-
CC COMP:9695, ChEBI:CHEBI:30616, ChEBI:CHEBI:33019, ChEBI:CHEBI:58045,
CC ChEBI:CHEBI:78442, ChEBI:CHEBI:78528, ChEBI:CHEBI:456215; EC=6.1.1.5;
CC Evidence={ECO:0000256|ARBA:ARBA00048359, 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|ARBA:ARBA00011245, ECO:0000256|HAMAP-
CC Rule:MF_02002}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|ARBA:ARBA00004496,
CC 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:KRL53821.1}.
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DR EMBL; AZEU01000009; KRL53821.1; -; Genomic_DNA.
DR RefSeq; WP_056962235.1; NZ_AZEU01000009.1.
DR AlphaFoldDB; A0A0R1R9I9; -.
DR PATRIC; fig|1423769.4.peg.161; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000051790; Unassembled WGS sequence.
DR GO; GO:0005829; C:cytosol; IEA:TreeGrafter.
DR GO; GO:0002161; F:aminoacyl-tRNA deacylase 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 CDD; cd00818; IleRS_core; 1.
DR FunFam; 1.10.10.830:FF:000001; Isoleucine--tRNA ligase; 1.
DR FunFam; 1.10.730.20:FF:000001; Isoleucine--tRNA ligase; 1.
DR FunFam; 3.40.50.620:FF:000152; Isoleucine--tRNA ligase; 1.
DR FunFam; 3.90.740.10:FF:000006; Isoleucine--tRNA ligase; 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 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; IPR050081; Ile-tRNA_ligase.
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|ARBA:ARBA00022723, ECO:0000256|HAMAP-
KW 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:UP000051790};
KW Zinc {ECO:0000256|ARBA:ARBA00022833, ECO:0000256|HAMAP-Rule:MF_02002}.
FT DOMAIN 27..632
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 676..829
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT DOMAIN 883..911
FT /note="Zinc finger FPG/IleRS-type"
FT /evidence="ECO:0000259|Pfam:PF06827"
FT MOTIF 57..67
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT MOTIF 593..597
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 552
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 596
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 886
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 889
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 906
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 909
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ SEQUENCE 929 AA; 104866 MW; F63E3CA19909DC0C CRC64;
MKVKETLNLG KTSFKMRAGL PAKEPKLQEA WYENHVYEAR QKLNEGKPTF VLHDGPPFAN
GNIHMGHALN KVTKDIIVRS KSMAGFRAPY VPGWDTHGLP IEQQLAKKGV RRKEMSMADY
REMCRQFAMK EIDKQRTDFK RLGVLGDWEH PYITLQPEFE AEEIRVFGKM AEKGYIYHGL
KPVYWSWSSE STLAEAEVEY HDVKSPSIYV AFKVVDGKDL LDNDTAFIIW TTTPWTIPAN
LGIAVNPRFE YAQVAVGGKK YVVASEMLPK VAEELGWSDY EVLKTFPGTE LDRMTAQHPL
YDRTSLVMEA DHVTLDAGTG LVHTAPGHGE DDYKVGVKYG LPVYSVVDEK GFMTKDAPGF
EGVFYDDANR MVTKALTEKD ALLKLDFFTH SYPHDWRTKK PVIYRATTQW FASVESFRQE
ILDAIDKVKF NPSWGKTRLY NMIRDRGDWV ISRQRAWGVP LPIFYAEDGT PIIEKATIDH
VADLFGEYGS IVWSQREAKD LLPEGYTNEH SPHGKFTKET DIMDVWFDSG SSWAGVAKAR
PELVYPTDMY MEGSDQYRGW FNSSLITSVA NNGVAPYKEI LSQGFTLDGE GRKMSKSLGN
TIVPDTVEKQ FGAEIIRLWV ASVDSSSDMK VSMDNFAHTS ETYRKIRNTL RFMLANTGDY
NEAVDAVSYA ELGSVDQYML VRLSQVIKAV RDAYTAYDFA TVVKTITQFL TVDMSAFYLD
FAKDVVYIEG EKSLARRRMQ TVMYKALVDV VELLTPILAF TAEEIWPLLK QDRDFAALAD
FPEATGFTNQ DDLLKAWPAF MAFRDKVQKA LEVARDAKVI GKSLEAHVTV YADDKLKALL
SGLDANLAQL LIVSDFTVKD ATDAPADAQV VDDVKLEVVH AEGDVCDRCR MTTTDVGSDA
RYPHFCARCA KIVSENFPET AAADFEFEV
//
