ID A0A1T2XF15_9BACL Unreviewed; 1031 AA.
AC A0A1T2XF15;
DT 10-MAY-2017, integrated into UniProtKB/TrEMBL.
DT 10-MAY-2017, sequence version 1.
DT 24-JAN-2024, entry version 29.
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=BVG16_11435 {ECO:0000313|EMBL:OPA78479.1};
OS Paenibacillus selenitireducens.
OC Bacteria; Bacillota; Bacilli; Bacillales; Paenibacillaceae; Paenibacillus.
OX NCBI_TaxID=1324314 {ECO:0000313|EMBL:OPA78479.1, ECO:0000313|Proteomes:UP000190188};
RN [1] {ECO:0000313|EMBL:OPA78479.1, ECO:0000313|Proteomes:UP000190188}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ES3-24 {ECO:0000313|EMBL:OPA78479.1,
RC ECO:0000313|Proteomes:UP000190188};
RA Xu D., Yao R., Zheng S.;
RT "Genome analysis of Paenibacillus selenitrireducens ES3-24.";
RL Submitted (JAN-2017) 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}.
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:OPA78479.1}.
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DR EMBL; MSZX01000004; OPA78479.1; -; Genomic_DNA.
DR AlphaFoldDB; A0A1T2XF15; -.
DR STRING; 1324314.BVG16_11435; -.
DR OrthoDB; 9810365at2; -.
DR Proteomes; UP000190188; 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}; Reference proteome {ECO:0000313|Proteomes:UP000190188};
KW Zinc {ECO:0000256|HAMAP-Rule:MF_02003}.
FT DOMAIN 17..620
FT /note="Aminoacyl-tRNA synthetase class Ia"
FT /evidence="ECO:0000259|Pfam:PF00133"
FT DOMAIN 676..822
FT /note="Methionyl/Valyl/Leucyl/Isoleucyl-tRNA synthetase
FT anticodon-binding"
FT /evidence="ECO:0000259|Pfam:PF08264"
FT MOTIF 47..57
FT /note="'HIGH' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT MOTIF 590..594
FT /note="'KMSKS' region"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
FT BINDING 593
FT /ligand="ATP"
FT /ligand_id="ChEBI:CHEBI:30616"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_02003"
SQ SEQUENCE 1031 AA; 117343 MW; F53FB027560F4938 CRC64;
MRKIDVKEKA RARELRVLTK WNEEETFKKS IENRAGKPNF VFYEGPPTAN GAPHIGHVLG
RVIKDFICRY KTMSGYRVVR KAGWDTHGLP VELGVEKQLG ISGKQEIEKY GVEEFVKKCK
ASVFEYEKQW RELTEAIAYW TDLDHPYVTL ENNYIESVWN ILATIHDKGL LYRGHRVSPY
CPCCQTTLSS HEVAQGYEDV KDLSATVKFR LKDSDEAIIA WTTTPWTLPA NVALAVNPAM
EYVKVKQDGE VIIVAKNLVD KAIKGEYELV STHLGSELVG LKYNPPLPYV QVENGHFVIG
ADYVSDTSGT GIVHIAPAHG EDDYRVARQN NISMLSVVNA AGRYTDEVTD FAGRFVKDCD
VDIVKMLSER GLLYSKEKYE HSYPFCWRCK SPLLYYAMES WFIQTTAVKE QLIANNNGVN
WYPGHIREGR FGKFLEDLVD WNISRNRYWG TPLNVWVCNS CKEEHAPHSH AELRARSITP
IGEDFELHKP YVDEVKLHCP HCEGGVMERT SEVIDVWFDS GSMPFAQQHY PFGDEKQFEA
QYPADMICEG IDQTRGWFFS LLAVSTLFNG KAPYKAVLST GHILDENGQK MSKSKGNVID
PWEIINEFGT DAFRWALLSD SAPWNSKRFS KQIVAEAKSK VIDTIVNTHA FLALYANIDQ
YDPQAYPDRP SQNKLDRWIL SRLNSLMQVV SKGLEANDFL NPAKAIETFV DELSNWYIRR
SRDRFWGSEM TEDKISAYQT LRRVLFDLSL LIAPYAPIVA EELYGNLGGT EESVHLADYP
QADASMIDAA LEQDMETSRQ IVELARNVRN ETSIKTRQPL SELIVSMDRD FDLASYEEII
KDEINVKDIR IETSDNEFVD FTLKLNLKVA GKKYGKNVGT IQGHLKGLNP QETRQIVEQG
QLSYVTAEDE SLDITLEELL IEKQAKAGFA SASGYQITVA LNTDITPELE QEGWVREVVR
AIQDTRKKLD LPIEKRVNLT LQVDDELKAA ITAFDHVLRE NVLVNEVHFG TMNNMEQIEL
GEKQIAIHIE K
//
