ID A0A1P8FI62_9PROT Unreviewed; 929 AA.
AC A0A1P8FI62;
DT 12-APR-2017, integrated into UniProtKB/TrEMBL.
DT 12-APR-2017, sequence version 1.
DT 24-JAN-2024, entry version 29.
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=BWI17_08455 {ECO:0000313|EMBL:APV49708.1};
OS Betaproteobacteria bacterium GR16-43.
OC Bacteria; Pseudomonadota; Betaproteobacteria.
OX NCBI_TaxID=1904640 {ECO:0000313|EMBL:APV49708.1, ECO:0000313|Proteomes:UP000185830};
RN [1] {ECO:0000313|EMBL:APV49708.1, ECO:0000313|Proteomes:UP000185830}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=GR16-43 {ECO:0000313|EMBL:APV49708.1,
RC ECO:0000313|Proteomes:UP000185830};
RA Choi A.;
RT "Complete genome sequence of betaproteobacterium GR16-43, isolated from a
RT freshwater pond in South Korea.";
RL Submitted (DEC-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; CP019169; APV49708.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1P8FI62; -.
DR STRING; 1904640.BWI17_08455; -.
DR KEGG; beba:BWI17_08455; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000185830; 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 CDD; cd00818; IleRS_core; 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}; Zinc {ECO:0000256|HAMAP-Rule:MF_02002}.
FT DOMAIN 33..644
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 689..821
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT DOMAIN 891..918
FT /note="Zinc finger FPG/IleRS-type"
FT /evidence="ECO:0000259|Pfam:PF06827"
FT MOTIF 63..73
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT MOTIF 606..610
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 565
FT /ligand="L-isoleucyl-5'-AMP"
FT /ligand_id="ChEBI:CHEBI:178002"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 609
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 892
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 895
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 912
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
FT BINDING 915
FT /ligand="Zn(2+)"
FT /ligand_id="ChEBI:CHEBI:29105"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02002"
SQ SEQUENCE 929 AA; 103092 MW; AF1790548A8B3066 CRC64;
MNDTKKTDYK STLNLTDTPF PMRGDLAKRE PAWVKGWQDG KLYERIRAAS KGRPKFILHD
GPPYANGDIH IGHAVNKVLK DIVVKSKTMA GFDAPYVPGW DCHGLPIEHV IEKKHGRNLE
PNEARRLCRA FAAEQIDKQR EDFKRLGVLG DWEHPYRTMD PKTEGGEIRA LGRIWKSGLL
YRGLKPVNWC IDCHSALAEA EVEHEDKTSA AIDVAFQASD PAQVARAFGL KAVPAKAAAV
IWTTTPWTLP GNQAIAAHPD FEYELVQTTK GALILAAELR AASLERYGLV AESVLGRANG
ATLAGLRFQH PFESRMVPLV LGGHVTLEAG TGLVHTAPAH GAEDFDVGVK NDLPLDQPVD
DLGRFKSNVP HFAGMSVREV EKPILERLQA NGALLKNATL VHKYPHCWRH KTPIIFRATV
QWFIGMERPA ASGKTLRATA KEAIDATQFY PAWGRSRLEA MIANRPDWTL SRQRNWGTPL
PFFLHRETDE LHPDTEKFIE QAAAMVDQGG VEAWFAATCE DFGVDAAKYR KITDTVDVWF
DSGTTHFTVL RGLADHRWPA DLYLEGSDQH RGWFQSSLLS SCAMEGRAPY DALLTHGFVV
DGQGKKMSKS QQNATAPRTI SDSLGAEIIR LWVAATDYSG ELAISDEILK RVVESYRRIR
NTLRFLLANT SDFDPAKDAL PPAEWLEIDR YALAMTRGML TEVTDAYARY EFHAVTQRLQ
MFCSEDLGGF YLDILKDRLY TSGRDSKARR AAQSALHAIA QALLRVMAPI LSFTAEEAWS
VLNPGKHESI FFHTWQDVLP PQEGESVLLN RWKVIREIRA ILAPKLEEQR AAGAIGSSLQ
AEVEIGASGA ELGALRTLGD DLRFVTITSK AEIADNGGEV TVTVRPSGAM KCERCWHYRD
DVGGDARHAA LCGRCVSNLE GPGEVRLHA
//
